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Edit: /usr/share/mysql/mysql_sys_schema.sql

-- Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved.
--
-- This program is free software; you can redistribute it and/or modify
-- it under the terms of the GNU General Public License as published by
-- the Free Software Foundation; version 2 of the License.
--
-- This program is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-- GNU General Public License for more details.
--
-- You should have received a copy of the GNU General Public License
-- along with this program; if not, write to the Free Software
-- Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

SET NAMES utf8;
SET @sql_log_bin = @@sql_log_bin;
SET sql_log_bin = 0;

CREATE DATABASE IF NOT EXISTS sys DEFAULT CHARACTER SET utf8;

USE sys;

--
-- View: version
--
-- Shows the sys schema and mysql versions
--
-- mysql> select * from sys.version;
-- +-------------+---------------+
-- | sys_version | mysql_version |
-- +-------------+---------------+
-- | 1.5.0       | 5.7.8-rc      |
-- +-------------+---------------+
--

CREATE OR REPLACE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW version (
  sys_version,
  mysql_version
) AS 
SELECT '1.5.1' AS sys_version, 
        version() AS mysql_version;
-- Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved.
--
-- This program is free software; you can redistribute it and/or modify
-- it under the terms of the GNU General Public License as published by
-- the Free Software Foundation; version 2 of the License.
--
-- This program is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-- GNU General Public License for more details.
--
-- You should have received a copy of the GNU General Public License
-- along with this program; if not, write to the Free Software
-- Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

--
-- Table: sys_config
--
-- Stores configuration options for sys objects
--

CREATE TABLE IF NOT EXISTS sys_config (
    variable VARCHAR(128) PRIMARY KEY,
    value VARCHAR(128),
    set_time TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    set_by VARCHAR(128)
) ENGINE = Aria;

-- Copyright (c) 2015 Oracle and/or its affiliates. All rights reserved.
--
-- This program is free software; you can redistribute it and/or modify
-- it under the terms of the GNU General Public License as published by
-- the Free Software Foundation; version 2 of the License.
--
-- This program is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-- GNU General Public License for more details.
--
-- You should have received a copy of the GNU General Public License
-- along with this program; if not, write to the Free Software
-- Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

-- NOTE: This needs to be replicated within the sys_config_clean.inc file

INSERT IGNORE INTO sys.sys_config (variable, value) VALUES
    ('statement_truncate_len', 64),
    ('statement_performance_analyzer.limit', 100),
    ('statement_performance_analyzer.view', NULL),
    ('diagnostics.allow_i_s_tables', 'OFF'),
    ('diagnostics.include_raw', 'OFF'),
    ('ps_thread_trx_info.max_length', 65535);

FLUSH TABLES sys.sys_config;

-- Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
--
-- This program is free software; you can redistribute it and/or modify
-- it under the terms of the GNU General Public License as published by
-- the Free Software Foundation; version 2 of the License.
--
-- This program is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-- GNU General Public License for more details.
--
-- You should have received a copy of the GNU General Public License
-- along with this program; if not, write to the Free Software
-- Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

--
-- Trigger: sys_config_insert_set_user
--
-- Sets the user that inserts configuration
--
--

DROP TRIGGER IF EXISTS sys_config_insert_set_user;

--
-- Trigger: sys_config_update_set_user
--
-- Sets the user that updates configuration
--
--

DROP TRIGGER IF EXISTS sys_config_update_set_user;

DROP FUNCTION IF EXISTS extract_schema_from_file_name;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' FUNCTION extract_schema_from_file_name (
        path VARCHAR(512)
    )
    RETURNS VARCHAR(64) 
    COMMENT '
             Description
             -----------

Takes a raw file path, and attempts to extract the schema name from it.

Useful for when interacting with Performance Schema data 
             concerning IO statistics, for example.

Currently relies on the fact that a table data file will be within a 
             specified database directory (will not work with partitions or tables
             that specify an individual DATA_DIRECTORY).

Parameters
             -----------

path (VARCHAR(512)):
               The full file path to a data file to extract the schema name from.

Returns
             -----------

VARCHAR(64)

Example
             -----------

mysql> SELECT sys.extract_schema_from_file_name(\'/var/lib/mysql/employees/employee.ibd\');
             +----------------------------------------------------------------------------+
             | sys.extract_schema_from_file_name(\'/var/lib/mysql/employees/employee.ibd\') |
             +----------------------------------------------------------------------------+
             | employees                                                                  |
             +----------------------------------------------------------------------------+
             1 row in set (0.00 sec)
            '
    SQL SECURITY INVOKER
    DETERMINISTIC
    NO SQL
BEGIN
    RETURN LEFT(SUBSTRING_INDEX(SUBSTRING_INDEX(REPLACE(path, '\\', '/'), '/', -2), '/', 1), 64);
END$$

DELIMITER ;

DROP FUNCTION IF EXISTS extract_table_from_file_name;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' FUNCTION extract_table_from_file_name (
        path VARCHAR(512)
    )
    RETURNS VARCHAR(64) 
    COMMENT '
             Description
             -----------

Takes a raw file path, and extracts the table name from it.

Useful for when interacting with Performance Schema data 
             concerning IO statistics, for example.

Parameters
             -----------

path (VARCHAR(512)):
               The full file path to a data file to extract the table name from.

Returns
             -----------

VARCHAR(64)

Example
             -----------

mysql> SELECT sys.extract_table_from_file_name(\'/var/lib/mysql/employees/employee.ibd\');
             +---------------------------------------------------------------------------+
             | sys.extract_table_from_file_name(\'/var/lib/mysql/employees/employee.ibd\') |
             +---------------------------------------------------------------------------+
             | employee                                                                  |
             +---------------------------------------------------------------------------+
             1 row in set (0.02 sec)
            '
    SQL SECURITY INVOKER
    DETERMINISTIC
    NO SQL
BEGIN
    RETURN LEFT(SUBSTRING_INDEX(REPLACE(SUBSTRING_INDEX(REPLACE(path, '\\', '/'), '/', -1), '@0024', '$'), '.', 1), 64);
END$$

DELIMITER ;

DROP FUNCTION IF EXISTS format_bytes;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' FUNCTION format_bytes (
        -- We feed in and return TEXT here, as aggregates of
        -- bytes can return numbers larger than BIGINT UNSIGNED
        bytes TEXT
    )
    RETURNS TEXT
    COMMENT '
             Description
             -----------

Takes a raw bytes value, and converts it to a human readable format.

Parameters
             -----------

bytes (TEXT):
               A raw bytes value.

Returns
             -----------

TEXT

Example
             -----------

mysql> SELECT sys.format_bytes(2348723492723746) AS size;
             +----------+
             | size     |
             +----------+
             | 2.09 PiB |
             +----------+
             1 row in set (0.00 sec)

mysql> SELECT sys.format_bytes(2348723492723) AS size;
             +----------+
             | size     |
             +----------+
             | 2.14 TiB |
             +----------+
             1 row in set (0.00 sec)

mysql> SELECT sys.format_bytes(23487234) AS size;
             +-----------+
             | size      |
             +-----------+
             | 22.40 MiB |
             +-----------+
             1 row in set (0.00 sec)
            '
    SQL SECURITY INVOKER
    DETERMINISTIC
    NO SQL
BEGIN
  IF bytes IS NULL THEN RETURN NULL;
  ELSEIF bytes >= 1125899906842624 THEN RETURN CONCAT(ROUND(bytes / 1125899906842624, 2), ' PiB');
  ELSEIF bytes >= 1099511627776 THEN RETURN CONCAT(ROUND(bytes / 1099511627776, 2), ' TiB');
  ELSEIF bytes >= 1073741824 THEN RETURN CONCAT(ROUND(bytes / 1073741824, 2), ' GiB');
  ELSEIF bytes >= 1048576 THEN RETURN CONCAT(ROUND(bytes / 1048576, 2), ' MiB');
  ELSEIF bytes >= 1024 THEN RETURN CONCAT(ROUND(bytes / 1024, 2), ' KiB');
  ELSE RETURN CONCAT(ROUND(bytes, 0), ' bytes');
  END IF;
END$$

DELIMITER ;

-- Copyright (c) 2014, 2016, Oracle and/or its affiliates. All rights reserved.
--
-- This program is free software; you can redistribute it and/or modify
-- it under the terms of the GNU General Public License as published by
-- the Free Software Foundation; version 2 of the License.
--
-- This program is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-- GNU General Public License for more details.
--
-- You should have received a copy of the GNU General Public License
-- along with this program; if not, write to the Free Software
-- Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

DROP FUNCTION IF EXISTS format_path;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' FUNCTION format_path (
        in_path VARCHAR(512)
    )
    RETURNS VARCHAR(512) CHARSET UTF8
    COMMENT '
             Description
             -----------

Takes a raw path value, and strips out the datadir or tmpdir
             replacing with @@datadir and @@tmpdir respectively.

Also normalizes the paths across operating systems, so backslashes
             on Windows are converted to forward slashes

Parameters
             -----------

path (VARCHAR(512)):
               The raw file path value to format.

Returns
             -----------

VARCHAR(512) CHARSET UTF8

Example
             -----------

mysql> select @@datadir;
             +-----------------------------------------------+
             | @@datadir                                     |
             +-----------------------------------------------+
             | /Users/mark/sandboxes/SmallTree/AMaster/data/ |
             +-----------------------------------------------+
             1 row in set (0.06 sec)

mysql> select format_path(\'/Users/mark/sandboxes/SmallTree/AMaster/data/mysql/proc.MYD\') AS path;
             +--------------------------+
             | path                     |
             +--------------------------+
             | @@datadir/mysql/proc.MYD |
             +--------------------------+
             1 row in set (0.03 sec)
            '
    SQL SECURITY INVOKER
    DETERMINISTIC
    NO SQL
BEGIN
  DECLARE v_dir VARCHAR(1024);
  DECLARE v_path VARCHAR(512);

DECLARE path_separator CHAR(1) DEFAULT '/';

IF @@global.version_compile_os LIKE 'win%' THEN
    SET path_separator = '\\';
  END IF;

-- OSX hides /private/ in variables, but Performance Schema does not
  IF in_path LIKE '/private/%' THEN
    SET v_path = REPLACE(in_path, '/private', '');
  ELSE
    SET v_path = in_path;
  END IF;

-- @@global.innodb_undo_directory is only set when separate undo logs are used
 
  SET v_dir= IFNULL((SELECT VARIABLE_VALUE FROM information_schema.global_variables WHERE VARIABLE_NAME = 'innodb_data_home_dir'), '');
  
  IF v_path IS NULL THEN
    RETURN NULL;
  END IF;

IF v_path LIKE CONCAT(@@global.datadir, IF(SUBSTRING(@@global.datadir, -1) = path_separator, '%', CONCAT(path_separator, '%'))) ESCAPE '|' THEN
    SET v_path = REPLACE(v_path, @@global.datadir, CONCAT('@@datadir', IF(SUBSTRING(@@global.datadir, -1) = path_separator, path_separator, '')));
    RETURN v_path;
  END IF;

IF v_path LIKE CONCAT(@@global.tmpdir, IF(SUBSTRING(@@global.tmpdir, -1) = path_separator, '%', CONCAT(path_separator, '%'))) ESCAPE '|' THEN
    SET v_path = REPLACE(v_path, @@global.tmpdir, CONCAT('@@tmpdir', IF(SUBSTRING(@@global.tmpdir, -1) = path_separator, path_separator, '')));
    RETURN v_path;
  END IF;

SET v_dir= IFNULL((SELECT VARIABLE_VALUE FROM information_schema.global_variables WHERE VARIABLE_NAME = 'innodb_data_home_dir'), '');
  IF v_path LIKE CONCAT(v_dir, IF(SUBSTRING(v_dir, -1) = path_separator, '%', CONCAT(path_separator, '%'))) ESCAPE '|' THEN
    SET v_path = REPLACE(v_path, v_dir, CONCAT('@@innodb_data_home_dir', IF(SUBSTRING(v_dir, -1) = path_separator, path_separator, '')));
    RETURN v_path;
  END IF;

SET v_dir= IFNULL((SELECT VARIABLE_VALUE FROM information_schema.global_variables WHERE VARIABLE_NAME = 'innodb_log_group_home_dir'), '');
  IF v_path LIKE CONCAT(v_dir, IF(SUBSTRING(v_dir, -1) = path_separator, '%', CONCAT(path_separator, '%'))) ESCAPE '|' THEN
    SET v_path = REPLACE(v_path, v_dir, CONCAT('@@innodb_log_group_home_dir', IF(SUBSTRING(v_dir, -1) = path_separator, path_separator, '')));
    RETURN v_path;
  END IF;

SET v_dir= IFNULL((SELECT VARIABLE_VALUE FROM information_schema.global_variables WHERE VARIABLE_NAME = 'slave_load_tmpdir'), '');
  IF v_path LIKE CONCAT(v_dir, IF(SUBSTRING(v_dir, -1) = path_separator, '%', CONCAT(path_separator, '%'))) ESCAPE '|' THEN
    SET v_path = REPLACE(v_path, v_dir, CONCAT('@@slave_load_tmpdir', IF(SUBSTRING(v_dir, -1) = path_separator, path_separator, '')));
    RETURN v_path;
  END IF;

SET v_dir = IFNULL((SELECT VARIABLE_VALUE FROM information_schema.global_variables WHERE VARIABLE_NAME = 'innodb_undo_directory'), '');
  IF v_path LIKE CONCAT(v_dir, IF(SUBSTRING(v_dir, -1) = path_separator, '%', CONCAT(path_separator, '%'))) ESCAPE '|' THEN
    SET v_path = REPLACE(v_path, v_dir, CONCAT('@@innodb_undo_directory', IF(SUBSTRING(v_dir, -1) = path_separator, path_separator, '')));
    RETURN v_path;
  END IF;

IF v_path LIKE CONCAT(@@global.basedir, IF(SUBSTRING(@@global.basedir, -1) = path_separator, '%', CONCAT(path_separator, '%'))) ESCAPE '|' THEN
    SET v_path = REPLACE(v_path, @@global.basedir, CONCAT('@@basedir', IF(SUBSTRING(@@global.basedir, -1) = path_separator, path_separator, '')));
    RETURN v_path;
  END IF;

RETURN v_path;
END$$

DELIMITER ;
-- Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved.
--
-- This program is free software; you can redistribute it and/or modify
-- it under the terms of the GNU General Public License as published by
-- the Free Software Foundation; version 2 of the License.
--
-- This program is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-- GNU General Public License for more details.
--
-- You should have received a copy of the GNU General Public License
-- along with this program; if not, write to the Free Software
-- Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

DROP FUNCTION IF EXISTS format_statement;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' FUNCTION format_statement (
        statement LONGTEXT
    )
    RETURNS LONGTEXT
    COMMENT '
             Description
             -----------

Formats a normalized statement, truncating it if it is > 64 characters long by default.

To configure the length to truncate the statement to by default, update the `statement_truncate_len`
             variable with `sys_config` table to a different value. Alternatively, to change it just for just 
             your particular session, use `SET @sys.statement_truncate_len := <some new value>`.

Useful for printing statement related data from Performance Schema from 
             the command line.

Parameters
             -----------

statement (LONGTEXT): 
               The statement to format.

Returns
             -----------

LONGTEXT

Example
             -----------

mysql> SELECT sys.format_statement(digest_text)
                 ->   FROM performance_schema.events_statements_summary_by_digest
                 ->  ORDER by sum_timer_wait DESC limit 5;
             +-------------------------------------------------------------------+
             | sys.format_statement(digest_text)                                 |
             +-------------------------------------------------------------------+
             | CREATE SQL SECURITY INVOKER VI ... KE ? AND `variable_value` > ?  |
             | CREATE SQL SECURITY INVOKER VI ... ait` IS NOT NULL , `esc` . ... |
             | CREATE SQL SECURITY INVOKER VI ... ait` IS NOT NULL , `sys` . ... |
             | CREATE SQL SECURITY INVOKER VI ...  , `compressed_size` ) ) DESC  |
             | CREATE SQL SECURITY INVOKER VI ... LIKE ? ORDER BY `timer_start`  |
             +-------------------------------------------------------------------+
             5 rows in set (0.00 sec)
            '
    SQL SECURITY INVOKER
    DETERMINISTIC
    NO SQL
BEGIN
  -- Check if we have the configured length, if not, init it
  IF @sys.statement_truncate_len IS NULL THEN
      SET @sys.statement_truncate_len = sys_get_config('statement_truncate_len', 64);
  END IF;

IF CHAR_LENGTH(statement) > @sys.statement_truncate_len THEN
      RETURN REPLACE(CONCAT(LEFT(statement, (@sys.statement_truncate_len/2)-2), ' ... ', RIGHT(statement, (@sys.statement_truncate_len/2)-2)), '\n', ' ');
  ELSE 
      RETURN REPLACE(statement, '\n', ' ');
  END IF;
END$$

DELIMITER ;

DROP FUNCTION IF EXISTS format_time;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' FUNCTION format_time (
        -- We feed in and return TEXT here, as aggregates of
        -- picoseconds can return numbers larger than BIGINT UNSIGNED
        picoseconds TEXT
    )
    RETURNS TEXT CHARSET UTF8
    COMMENT '
             Description
             -----------

Takes a raw picoseconds value, and converts it to a human readable form.
             
             Picoseconds are the precision that all latency values are printed in 
             within Performance Schema, however are not user friendly when wanting
             to scan output from the command line.

Parameters
             -----------

picoseconds (TEXT): 
               The raw picoseconds value to convert.

Returns
             -----------

TEXT

Example
             -----------

mysql> select format_time(342342342342345);
             +------------------------------+
             | format_time(342342342342345) |
             +------------------------------+
             | 00:05:42                     |
             +------------------------------+
             1 row in set (0.00 sec)

mysql> select format_time(342342342);
             +------------------------+
             | format_time(342342342) |
             +------------------------+
             | 342.34 us              |
             +------------------------+
             1 row in set (0.00 sec)

mysql> select format_time(34234);
              +--------------------+
             | format_time(34234) |
             +--------------------+
             | 34.23 ns           |
             +--------------------+
             1 row in set (0.00 sec)
            '
    SQL SECURITY INVOKER
    DETERMINISTIC
    NO SQL
BEGIN
  IF picoseconds IS NULL THEN RETURN NULL;
  ELSEIF picoseconds >= 604800000000000000 THEN RETURN CONCAT(ROUND(picoseconds / 604800000000000000, 2), ' w');
  ELSEIF picoseconds >= 86400000000000000 THEN RETURN CONCAT(ROUND(picoseconds / 86400000000000000, 2), ' d');
  ELSEIF picoseconds >= 3600000000000000 THEN RETURN CONCAT(ROUND(picoseconds / 3600000000000000, 2), ' h');
  ELSEIF picoseconds >= 60000000000000 THEN RETURN CONCAT(ROUND(picoseconds / 60000000000000, 2), ' m');
  ELSEIF picoseconds >= 1000000000000 THEN RETURN CONCAT(ROUND(picoseconds / 1000000000000, 2), ' s');
  ELSEIF picoseconds >= 1000000000 THEN RETURN CONCAT(ROUND(picoseconds / 1000000000, 2), ' ms');
  ELSEIF picoseconds >= 1000000 THEN RETURN CONCAT(ROUND(picoseconds / 1000000, 2), ' us');
  ELSEIF picoseconds >= 1000 THEN RETURN CONCAT(ROUND(picoseconds / 1000, 2), ' ns');
  ELSE RETURN CONCAT(picoseconds, ' ps');
  END IF;
END$$

DELIMITER ;

-- Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
--
-- This program is free software; you can redistribute it and/or modify
-- it under the terms of the GNU General Public License as published by
-- the Free Software Foundation; version 2 of the License.
--
-- This program is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-- GNU General Public License for more details.
--
-- You should have received a copy of the GNU General Public License
-- along with this program; if not, write to the Free Software
-- Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

DROP FUNCTION IF EXISTS list_add;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' FUNCTION list_add (
        in_list TEXT,
        in_add_value TEXT
    )
    RETURNS TEXT
    COMMENT '
             Description
             -----------

Takes a list, and a value to add to the list, and returns the resulting list.

Useful for altering certain session variables, like sql_mode or optimizer_switch for instance.

Parameters
             -----------

in_list (TEXT):
               The comma separated list to add a value to

in_add_value (TEXT):
               The value to add to the input list

Returns
             -----------

TEXT

Example
             --------

mysql> select @@sql_mode;
             +-----------------------------------------------------------------------------------+
             | @@sql_mode                                                                        |
             +-----------------------------------------------------------------------------------+
             | ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION |
             +-----------------------------------------------------------------------------------+
             1 row in set (0.00 sec)

mysql> set sql_mode = sys.list_add(@@sql_mode, ''ANSI_QUOTES'');
             Query OK, 0 rows affected (0.06 sec)

mysql> select @@sql_mode;
             +-----------------------------------------------------------------------------------------------+
             | @@sql_mode                                                                                    |
             +-----------------------------------------------------------------------------------------------+
             | ANSI_QUOTES,ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION |
             +-----------------------------------------------------------------------------------------------+
             1 row in set (0.00 sec)

'
    SQL SECURITY INVOKER
    DETERMINISTIC
    CONTAINS SQL
BEGIN

IF (in_add_value IS NULL) THEN
        SIGNAL SQLSTATE '02200'
           SET MESSAGE_TEXT = 'Function sys.list_add: in_add_value input variable should not be NULL',
               MYSQL_ERRNO = 1138;
    END IF;

IF (in_list IS NULL OR LENGTH(in_list) = 0) THEN
        -- return the new value as a single value list
        RETURN in_add_value;
    END IF;

RETURN (SELECT CONCAT(TRIM(BOTH ',' FROM TRIM(in_list)), ',', in_add_value));

END$$

DELIMITER ;

DROP FUNCTION IF EXISTS list_drop;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' FUNCTION list_drop (
        in_list TEXT,
        in_drop_value TEXT
    )
    RETURNS TEXT
    COMMENT '
             Description
             -----------

Takes a list, and a value to attempt to remove from the list, and returns the resulting list.

Useful for altering certain session variables, like sql_mode or optimizer_switch for instance.

Parameters
             -----------

in_list (TEXT):
               The comma separated list to drop a value from

in_drop_value (TEXT):
               The value to drop from the input list

Returns
             -----------

TEXT

Example
             --------

mysql> set sql_mode = sys.list_drop(@@sql_mode, ''ONLY_FULL_GROUP_BY'');
             Query OK, 0 rows affected (0.03 sec)

mysql> select @@sql_mode;
             +----------------------------------------------------------------------------+
             | @@sql_mode                                                                 |
             +----------------------------------------------------------------------------+
             | ANSI_QUOTES,STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION |
             +----------------------------------------------------------------------------+
             1 row in set (0.00 sec)

'
    SQL SECURITY INVOKER
    DETERMINISTIC
    CONTAINS SQL
BEGIN

IF (in_drop_value IS NULL) THEN
        SIGNAL SQLSTATE '02200'
           SET MESSAGE_TEXT = 'Function sys.list_drop: in_drop_value input variable should not be NULL',
               MYSQL_ERRNO = 1138;
    END IF;

IF (in_list IS NULL OR LENGTH(in_list) = 0) THEN
        -- return the list as it was passed in
        RETURN in_list;
    END IF;

-- ensure that leading / trailing commas are remove, support values with either spaces or not between commas
    RETURN (SELECT TRIM(BOTH ',' FROM REPLACE(REPLACE(CONCAT(',', in_list), CONCAT(',', in_drop_value), ''), CONCAT(', ', in_drop_value), '')));

END$$

DELIMITER ;

DROP FUNCTION IF EXISTS ps_is_account_enabled;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' FUNCTION ps_is_account_enabled (
        in_host VARCHAR(60), 
        in_user VARCHAR(16)
    ) 
    RETURNS ENUM('YES', 'NO')
    COMMENT '
             Description
             -----------

Determines whether instrumentation of an account is enabled 
             within Performance Schema.

Parameters
             -----------

in_host VARCHAR(60): 
               The hostname of the account to check.
             in_user (VARCHAR(16)):
               The username of the account to check.

Returns
             -----------

ENUM(\'YES\', \'NO\', \'PARTIAL\')

Example
             -----------

mysql> SELECT sys.ps_is_account_enabled(\'localhost\', \'root\');
             +------------------------------------------------+
             | sys.ps_is_account_enabled(\'localhost\', \'root\') |
             +------------------------------------------------+
             | YES                                            |
             +------------------------------------------------+
             1 row in set (0.01 sec)
            '
    SQL SECURITY INVOKER
    DETERMINISTIC 
    READS SQL DATA 
BEGIN
    RETURN IF(EXISTS(SELECT 1
                       FROM performance_schema.setup_actors
                      WHERE (`HOST` = '%' OR in_host LIKE `HOST`)
                        AND (`USER` = '%' OR `USER` = in_user)
                    ),
              'YES', 'NO'
           );
END$$

DELIMITER ;

DROP FUNCTION IF EXISTS ps_is_consumer_enabled;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' FUNCTION ps_is_consumer_enabled (
        in_consumer varchar(64)
   )
   RETURNS enum('YES', 'NO')
    COMMENT '
             Description
             -----------

Determines whether a consumer is enabled (taking the consumer hierarchy into consideration)
             within the Performance Schema.

Parameters
             -----------

in_consumer VARCHAR(64): 
               The name of the consumer to check.

Returns
             -----------

ENUM(\'YES\', \'NO\')

Example
             -----------

mysql> SELECT sys.ps_is_consumer_enabled(\'events_stages_history\');
             +-----------------------------------------------------+
             | sys.ps_is_consumer_enabled(\'events_stages_history\') |
             +-----------------------------------------------------+
             | NO                                                  |
             +-----------------------------------------------------+
             1 row in set (0.00 sec)
            '
    SQL SECURITY INVOKER
    DETERMINISTIC 
    READS SQL DATA 
BEGIN
    RETURN (
        SELECT (CASE
                   WHEN c.NAME = 'global_instrumentation' THEN c.ENABLED
                   WHEN c.NAME = 'thread_instrumentation' THEN IF(cg.ENABLED = 'YES' AND c.ENABLED = 'YES', 'YES', 'NO')
                   WHEN c.NAME LIKE '%\_digest'           THEN IF(cg.ENABLED = 'YES' AND c.ENABLED = 'YES', 'YES', 'NO')
                   WHEN c.NAME LIKE '%\_current'          THEN IF(cg.ENABLED = 'YES' AND ct.ENABLED = 'YES' AND c.ENABLED = 'YES', 'YES', 'NO')
                   ELSE IF(cg.ENABLED = 'YES' AND ct.ENABLED = 'YES' AND c.ENABLED = 'YES'
                           AND ( SELECT cc.ENABLED FROM performance_schema.setup_consumers cc WHERE NAME = CONCAT(SUBSTRING_INDEX(c.NAME, '_', 2), '_current')
                               ) = 'YES', 'YES', 'NO')
                END) AS IsEnabled
          FROM performance_schema.setup_consumers c
               INNER JOIN performance_schema.setup_consumers cg
               INNER JOIN performance_schema.setup_consumers ct
         WHERE cg.NAME       = 'global_instrumentation'
               AND ct.NAME   = 'thread_instrumentation'
               AND c.NAME    = in_consumer
       );
END$$

DELIMITER ;

DROP FUNCTION IF EXISTS ps_is_instrument_default_enabled;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' FUNCTION ps_is_instrument_default_enabled (
        in_instrument VARCHAR(128)
    ) 
    RETURNS ENUM('YES', 'NO')
    COMMENT '
             Description
             -----------

Returns whether an instrument is enabled by default in this version of MySQL.

Parameters
             -----------

in_instrument VARCHAR(128): 
               The instrument to check.

Returns
             -----------

ENUM(\'YES\', \'NO\')

Example
             -----------

mysql> SELECT sys.ps_is_instrument_default_enabled(\'statement/sql/select\');
             +--------------------------------------------------------------+
             | sys.ps_is_instrument_default_enabled(\'statement/sql/select\') |
             +--------------------------------------------------------------+
             | YES                                                          |
             +--------------------------------------------------------------+
             1 row in set (0.00 sec)
            '
    SQL SECURITY INVOKER
    DETERMINISTIC 
    READS SQL DATA 
BEGIN
    DECLARE v_enabled ENUM('YES', 'NO');

-- Currently the same in all versions
    SET v_enabled = IF(in_instrument LIKE 'wait/io/file/%'
                        OR in_instrument LIKE 'wait/io/table/%'
                        OR in_instrument LIKE 'statement/%'
                        OR in_instrument LIKE 'memory/performance_schema/%'
                        OR in_instrument IN ('wait/lock/table/sql/handler', 'idle')
               /*!50707
                        OR in_instrument LIKE 'stage/innodb/%'
                        OR in_instrument = 'stage/sql/copy to tmp table'
               */
                      ,
                       'YES',
                       'NO'
                    );

RETURN v_enabled;
END$$

DELIMITER ;

DROP FUNCTION IF EXISTS ps_is_instrument_default_timed;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' FUNCTION ps_is_instrument_default_timed (
        in_instrument VARCHAR(128)
    ) 
    RETURNS ENUM('YES', 'NO')
    COMMENT '
             Description
             -----------

Returns whether an instrument is timed by default in this version of MySQL.

Parameters
             -----------

in_instrument VARCHAR(128): 
               The instrument to check.

Returns
             -----------

ENUM(\'YES\', \'NO\')

Example
             -----------

mysql> SELECT sys.ps_is_instrument_default_timed(\'statement/sql/select\');
             +------------------------------------------------------------+
             | sys.ps_is_instrument_default_timed(\'statement/sql/select\') |
             +------------------------------------------------------------+
             | YES                                                        |
             +------------------------------------------------------------+
             1 row in set (0.00 sec)
            '
    SQL SECURITY INVOKER
    DETERMINISTIC 
    READS SQL DATA 
BEGIN
    DECLARE v_timed ENUM('YES', 'NO');

-- Currently the same in all versions
    SET v_timed = IF(in_instrument LIKE 'wait/io/file/%'
                        OR in_instrument LIKE 'wait/io/table/%'
                        OR in_instrument LIKE 'statement/%'
                        OR in_instrument IN ('wait/lock/table/sql/handler', 'idle')
               /*!50707
                        OR in_instrument LIKE 'stage/innodb/%'
                        OR in_instrument = 'stage/sql/copy to tmp table'
               */
                      ,
                       'YES',
                       'NO'
                    );

RETURN v_timed;
END$$

DELIMITER ;

DROP FUNCTION IF EXISTS ps_is_thread_instrumented;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' FUNCTION ps_is_thread_instrumented (
        in_connection_id BIGINT UNSIGNED
    ) RETURNS ENUM('YES', 'NO', 'UNKNOWN')
    COMMENT '
             Description
             -----------

Checks whether the provided connection id is instrumented within Performance Schema.

Parameters
             -----------

in_connection_id (BIGINT UNSIGNED):
               The id of the connection to check.

Returns
             -----------

ENUM(\'YES\', \'NO\', \'UNKNOWN\')

Example
             -----------

mysql> SELECT sys.ps_is_thread_instrumented(CONNECTION_ID());
             +------------------------------------------------+
             | sys.ps_is_thread_instrumented(CONNECTION_ID()) |
             +------------------------------------------------+
             | YES                                            |
             +------------------------------------------------+
            '

SQL SECURITY INVOKER
    NOT DETERMINISTIC
    READS SQL DATA
BEGIN
    DECLARE v_enabled ENUM('YES', 'NO', 'UNKNOWN');

IF (in_connection_id IS NULL) THEN
        RETURN NULL;
    END IF;

SELECT INSTRUMENTED INTO v_enabled
      FROM performance_schema.threads 
     WHERE PROCESSLIST_ID = in_connection_id;

IF (v_enabled IS NULL) THEN
        RETURN 'UNKNOWN';
    ELSE
        RETURN v_enabled;
    END IF;
END$$

DELIMITER ;

DROP FUNCTION IF EXISTS ps_thread_id;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' FUNCTION ps_thread_id (
        in_connection_id BIGINT UNSIGNED
    ) RETURNS BIGINT UNSIGNED
    COMMENT '
             Description
             -----------

Return the Performance Schema THREAD_ID for the specified connection ID.

Parameters
             -----------

in_connection_id (BIGINT UNSIGNED):
               The id of the connection to return the thread id for. If NULL, the current
               connection thread id is returned.

Example
             -----------

mysql> SELECT sys.ps_thread_id(79);
             +----------------------+
             | sys.ps_thread_id(79) |
             +----------------------+
             |                   98 |
             +----------------------+
             1 row in set (0.00 sec)

mysql> SELECT sys.ps_thread_id(CONNECTION_ID());
             +-----------------------------------+
             | sys.ps_thread_id(CONNECTION_ID()) |
             +-----------------------------------+
             |                                98 |
             +-----------------------------------+
             1 row in set (0.00 sec)
            '

SQL SECURITY INVOKER
    NOT DETERMINISTIC
    READS SQL DATA
BEGIN
    RETURN (SELECT THREAD_ID
              FROM `performance_schema`.`threads`
             WHERE PROCESSLIST_ID = IFNULL(in_connection_id, CONNECTION_ID())
           );
END$$

DELIMITER ;

DROP FUNCTION IF EXISTS ps_thread_account;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' FUNCTION ps_thread_account (
        in_thread_id BIGINT UNSIGNED
    ) RETURNS TEXT
    COMMENT '
             Description
             -----------

Return the user@host account for the given Performance Schema thread id.

Parameters
             -----------

in_thread_id (BIGINT UNSIGNED):
               The id of the thread to return the account for.

Example
             -----------

mysql> select sys.ps_thread_account(31);
              +---------------------------+
              | sys.ps_thread_account(31) |
              +---------------------------+
              | msandbox@localhost        |
              +---------------------------+
              1 row in set (0.00 sec)
            '

SQL SECURITY INVOKER
    NOT DETERMINISTIC
    READS SQL DATA
BEGIN
    RETURN (SELECT IF(
                      type = 'FOREGROUND',
                      CONCAT(processlist_user, '@', processlist_host),
                      type
                     ) AS account
              FROM `performance_schema`.`threads`
             WHERE thread_id = in_thread_id);
END$$

DELIMITER ;

DROP FUNCTION IF EXISTS ps_thread_stack;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' FUNCTION ps_thread_stack (
        thd_id BIGINT UNSIGNED,
        debug BOOLEAN
    )
RETURNS LONGTEXT CHARSET latin1
    COMMENT '
             Description
             -----------

Outputs a JSON formatted stack of all statements, stages and events
             within Performance Schema for the specified thread.

Parameters
             -----------

thd_id (BIGINT UNSIGNED):
               The id of the thread to trace. This should match the thread_id
               column from the performance_schema.threads table.
             in_verbose (BOOLEAN):
               Include file:lineno information in the events.

Example
             -----------

(line separation added for output)

mysql> SELECT sys.ps_thread_stack(37, FALSE) AS thread_stack\\G
             *************************** 1. row ***************************
             thread_stack: {"rankdir": "LR","nodesep": "0.10","stack_created": "2014-02-19 13:39:03",
             "mysql_version": "5.7.3-m13","mysql_user": "root@localhost","events": 
             [{"nesting_event_id": "0", "event_id": "10", "timer_wait": 256.35, "event_info": 
             "sql/select", "wait_info": "select @@version_comment limit 1\\nerrors: 0\\nwarnings: 0\\nlock time:
             ...
            '
SQL SECURITY INVOKER
NOT DETERMINISTIC
READS SQL DATA
BEGIN

DECLARE json_objects LONGTEXT;

/*!50602
    -- Do not track the current thread, it will kill the stack
    UPDATE performance_schema.threads
       SET instrumented = 'NO'
     WHERE processlist_id = CONNECTION_ID();
    */

SET SESSION group_concat_max_len=@@global.max_allowed_packet;

-- Select the entire stack of events
    SELECT GROUP_CONCAT(CONCAT( '{'
              , CONCAT_WS( ', '
              , CONCAT('"nesting_event_id": "', IF(nesting_event_id IS NULL, '0', nesting_event_id), '"')
              , CONCAT('"event_id": "', event_id, '"')
              -- Convert from picoseconds to microseconds
              , CONCAT( '"timer_wait": ', ROUND(timer_wait/1000000, 2))  
              , CONCAT( '"event_info": "'
                  , CASE
                        WHEN event_name NOT LIKE 'wait/io%' THEN REPLACE(SUBSTRING_INDEX(event_name, '/', -2), '\\', '\\\\')
                        WHEN event_name NOT LIKE 'wait/io/file%' OR event_name NOT LIKE 'wait/io/socket%' THEN REPLACE(SUBSTRING_INDEX(event_name, '/', -4), '\\', '\\\\')
                        ELSE event_name
                    END
                  , '"'
              )
              -- Always dump the extra wait information gathered for statements
              , CONCAT( '"wait_info": "', IFNULL(wait_info, ''), '"')
              -- If debug is enabled, add the file:lineno information for waits
              , CONCAT( '"source": "', IF(true AND event_name LIKE 'wait%', IFNULL(wait_info, ''), ''), '"')
              -- Depending on the type of event, name it appropriately
              , CASE 
                     WHEN event_name LIKE 'wait/io/file%'      THEN '"event_type": "io/file"'
                     WHEN event_name LIKE 'wait/io/table%'     THEN '"event_type": "io/table"'
                     WHEN event_name LIKE 'wait/io/socket%'    THEN '"event_type": "io/socket"'
                     WHEN event_name LIKE 'wait/synch/mutex%'  THEN '"event_type": "synch/mutex"'
                     WHEN event_name LIKE 'wait/synch/cond%'   THEN '"event_type": "synch/cond"'
                     WHEN event_name LIKE 'wait/synch/rwlock%' THEN '"event_type": "synch/rwlock"'
                     WHEN event_name LIKE 'wait/lock%'         THEN '"event_type": "lock"'
                     WHEN event_name LIKE 'statement/%'        THEN '"event_type": "stmt"'
                     WHEN event_name LIKE 'stage/%'            THEN '"event_type": "stage"'
                     WHEN event_name LIKE '%idle%'             THEN '"event_type": "idle"'
                     ELSE '' 
                END                   
            )
            , '}'
          )
          ORDER BY event_id ASC SEPARATOR ',') event
    INTO json_objects
    FROM (
          /*!50600
          -- Select all statements, with the extra tracing information available
          (SELECT thread_id, event_id, event_name, timer_wait, timer_start, nesting_event_id, 
                  CONCAT(sql_text, '\\n',
                         'errors: ', errors, '\\n',
                         'warnings: ', warnings, '\\n',
                         'lock time: ', ROUND(lock_time/1000000, 2),'us\\n',
                         'rows affected: ', rows_affected, '\\n',
                         'rows sent: ', rows_sent, '\\n',
                         'rows examined: ', rows_examined, '\\n',
                         'tmp tables: ', created_tmp_tables, '\\n',
                         'tmp disk tables: ', created_tmp_disk_tables, '\\n',
                         'select scan: ', select_scan, '\\n',
                         'select full join: ', select_full_join, '\\n',
                         'select full range join: ', select_full_range_join, '\\n',
                         'select range: ', select_range, '\\n',
                         'select range check: ', select_range_check, '\\n', 
                         'sort merge passes: ', sort_merge_passes, '\\n',
                         'sort rows: ', sort_rows, '\\n',
                         'sort range: ', sort_range, '\\n',
                         'sort scan: ', sort_scan, '\\n',
                         'no index used: ', IF(no_index_used, 'TRUE', 'FALSE'), '\\n',
                         'no good index used: ', IF(no_good_index_used, 'TRUE', 'FALSE'), '\\n'
                         ) AS wait_info
             FROM performance_schema.events_statements_history_long WHERE thread_id = thd_id)
          UNION 
          -- Select all stages
          (SELECT thread_id, event_id, event_name, timer_wait, timer_start, nesting_event_id, null AS wait_info
             FROM performance_schema.events_stages_history_long WHERE thread_id = thd_id) 
          UNION */
          -- Select all events, adding information appropriate to the event
          (SELECT thread_id, event_id, 
                  CONCAT(event_name , 
                         IF(event_name NOT LIKE 'wait/synch/mutex%', IFNULL(CONCAT(' - ', operation), ''), ''), 
                         IF(number_of_bytes IS NOT NULL, CONCAT(' ', number_of_bytes, ' bytes'), ''),
                         IF(event_name LIKE 'wait/io/file%', '\\n', ''),
                         IF(object_schema IS NOT NULL, CONCAT('\\nObject: ', object_schema, '.'), ''), 
                         IF(object_name IS NOT NULL, 
                            IF (event_name LIKE 'wait/io/socket%',
                                -- Print the socket if used, else the IP:port as reported
                                CONCAT(IF (object_name LIKE ':0%', @@socket, object_name)),
                                object_name),
                            ''),
                         /*!50600 IF(index_name IS NOT NULL, CONCAT(' Index: ', index_name), ''),*/'\\n'
                         ) AS event_name,
                  timer_wait, timer_start, nesting_event_id, source AS wait_info
             FROM performance_schema.events_waits_history_long WHERE thread_id = thd_id)) events 
    ORDER BY event_id;

RETURN CONCAT('{', 
                  CONCAT_WS(',', 
                            '"rankdir": "LR"',
                            '"nodesep": "0.10"',
                            CONCAT('"stack_created": "', NOW(), '"'),
                            CONCAT('"mysql_version": "', VERSION(), '"'),
                            CONCAT('"mysql_user": "', CURRENT_USER(), '"'),
                            CONCAT('"events": [', IFNULL(json_objects,''), ']')
                           ),
                  '}');

END$$

DELIMITER ;

DROP FUNCTION IF EXISTS ps_thread_trx_info;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' FUNCTION ps_thread_trx_info (
        in_thread_id BIGINT UNSIGNED
    ) RETURNS LONGTEXT
    COMMENT '
             Description
             -----------

Returns a JSON object with info on the given threads current transaction, 
             and the statements it has already executed, derived from the
             performance_schema.events_transactions_current and
             performance_schema.events_statements_history tables (so the consumers 
             for these also have to be enabled within Performance Schema to get full
             data in the object).

When the output exceeds the default truncation length (65535), a JSON error
             object is returned, such as:

{ "error": "Trx info truncated: Row 6 was cut by GROUP_CONCAT()" }

Similar error objects are returned for other warnings/and exceptions raised
             when calling the function.

The max length of the output of this function can be controlled with the
             ps_thread_trx_info.max_length variable set via sys_config, or the
             @sys.ps_thread_trx_info.max_length user variable, as appropriate.

Parameters
             -----------

in_thread_id (BIGINT UNSIGNED):
               The id of the thread to return the transaction info for.

Example
             -----------

SELECT sys.ps_thread_trx_info(48)\\G
             *************************** 1. row ***************************
             sys.ps_thread_trx_info(48): [
               {
                 "time": "790.70 us",
                 "state": "COMMITTED",
                 "mode": "READ WRITE",
                 "autocommitted": "NO",
                 "gtid": "AUTOMATIC",
                 "isolation": "REPEATABLE READ",
                 "statements_executed": [
                   {
                     "sql_text": "INSERT INTO info VALUES (1, \'foo\')",
                     "time": "471.02 us",
                     "schema": "trx",
                     "rows_examined": 0,
                     "rows_affected": 1,
                     "rows_sent": 0,
                     "tmp_tables": 0,
                     "tmp_disk_tables": 0,
                     "sort_rows": 0,
                     "sort_merge_passes": 0
                   },
                   {
                     "sql_text": "COMMIT",
                     "time": "254.42 us",
                     "schema": "trx",
                     "rows_examined": 0,
                     "rows_affected": 0,
                     "rows_sent": 0,
                     "tmp_tables": 0,
                     "tmp_disk_tables": 0,
                     "sort_rows": 0,
                     "sort_merge_passes": 0
                   }
                 ]
               },
               {
                 "time": "426.20 us",
                 "state": "COMMITTED",
                 "mode": "READ WRITE",
                 "autocommitted": "NO",
                 "gtid": "AUTOMATIC",
                 "isolation": "REPEATABLE READ",
                 "statements_executed": [
                   {
                     "sql_text": "INSERT INTO info VALUES (2, \'bar\')",
                     "time": "107.33 us",
                     "schema": "trx",
                     "rows_examined": 0,
                     "rows_affected": 1,
                     "rows_sent": 0,
                     "tmp_tables": 0,
                     "tmp_disk_tables": 0,
                     "sort_rows": 0,
                     "sort_merge_passes": 0
                   },
                   {
                     "sql_text": "COMMIT",
                     "time": "213.23 us",
                     "schema": "trx",
                     "rows_examined": 0,
                     "rows_affected": 0,
                     "rows_sent": 0,
                     "tmp_tables": 0,
                     "tmp_disk_tables": 0,
                     "sort_rows": 0,
                     "sort_merge_passes": 0
                   }
                 ]
               }
             ]
             1 row in set (0.03 sec)
            '

SQL SECURITY INVOKER
    NOT DETERMINISTIC
    READS SQL DATA
BEGIN
    DECLARE v_output LONGTEXT DEFAULT '{}';
    DECLARE v_msg_text TEXT DEFAULT '';
    DECLARE v_signal_msg TEXT DEFAULT '';
    DECLARE v_mysql_errno INT;
    DECLARE v_max_output_len BIGINT;
    -- Capture warnings/errors such as group_concat truncation
    -- and report as JSON error objects
    DECLARE EXIT HANDLER FOR SQLWARNING, SQLEXCEPTION
    BEGIN
        GET DIAGNOSTICS CONDITION 1
            v_msg_text = MESSAGE_TEXT,
            v_mysql_errno = MYSQL_ERRNO;

IF v_mysql_errno = 1260 THEN
            SET v_signal_msg = CONCAT('{ "error": "Trx info truncated: ', v_msg_text, '" }');
        ELSE
            SET v_signal_msg = CONCAT('{ "error": "', v_msg_text, '" }');
        END IF;

RETURN v_signal_msg;
    END;

-- Set configuration options
    IF (@sys.ps_thread_trx_info.max_length IS NULL) THEN
        SET @sys.ps_thread_trx_info.max_length = sys.sys_get_config('ps_thread_trx_info.max_length', 65535);
    END IF;

IF (@sys.ps_thread_trx_info.max_length != @@session.group_concat_max_len) THEN
        SET @old_group_concat_max_len = @@session.group_concat_max_len;
        -- Convert to int value for the SET, and give some surrounding space
        SET v_max_output_len = (@sys.ps_thread_trx_info.max_length - 5);
        SET SESSION group_concat_max_len = v_max_output_len;
    END IF;

SET v_output = (
        SELECT CONCAT('[', IFNULL(GROUP_CONCAT(trx_info ORDER BY event_id), ''), '\n]') AS trx_info
          FROM (SELECT trxi.thread_id, 
                       trxi.event_id,
                       GROUP_CONCAT(
                         IFNULL(
                           CONCAT('\n  {\n',
                                  '    "time": "', IFNULL(sys.format_time(trxi.timer_wait), ''), '",\n',
                                  '    "state": "', IFNULL(trxi.state, ''), '",\n',
                                  '    "mode": "', IFNULL(trxi.access_mode, ''), '",\n',
                                  '    "autocommitted": "', IFNULL(trxi.autocommit, ''), '",\n',
                                  '    "gtid": "', IFNULL(trxi.gtid, ''), '",\n',
                                  '    "isolation": "', IFNULL(trxi.isolation_level, ''), '",\n',
                                  '    "statements_executed": [', IFNULL(s.stmts, ''), IF(s.stmts IS NULL, ' ]\n', '\n    ]\n'),
                                  '  }'
                           ), 
                           '') 
                         ORDER BY event_id) AS trx_info

FROM (
                        (SELECT thread_id, event_id, timer_wait, state,access_mode, autocommit, gtid, isolation_level
                           FROM performance_schema.events_transactions_current
                          WHERE thread_id = in_thread_id
                            AND end_event_id IS NULL)
                        UNION
                        (SELECT thread_id, event_id, timer_wait, state,access_mode, autocommit, gtid, isolation_level
                           FROM performance_schema.events_transactions_history
                          WHERE thread_id = in_thread_id)
                       ) AS trxi
                  LEFT JOIN (SELECT thread_id,
                                    nesting_event_id,
                                    GROUP_CONCAT(
                                      IFNULL(
                                        CONCAT('\n      {\n',
                                               '        "sql_text": "', IFNULL(sys.format_statement(REPLACE(sql_text, '\\', '\\\\')), ''), '",\n',
                                               '        "time": "', IFNULL(sys.format_time(timer_wait), ''), '",\n',
                                               '        "schema": "', IFNULL(current_schema, ''), '",\n',
                                               '        "rows_examined": ', IFNULL(rows_examined, ''), ',\n',
                                               '        "rows_affected": ', IFNULL(rows_affected, ''), ',\n',
                                               '        "rows_sent": ', IFNULL(rows_sent, ''), ',\n',
                                               '        "tmp_tables": ', IFNULL(created_tmp_tables, ''), ',\n',
                                               '        "tmp_disk_tables": ', IFNULL(created_tmp_disk_tables, ''), ',\n',
                                               '        "sort_rows": ', IFNULL(sort_rows, ''), ',\n',
                                               '        "sort_merge_passes": ', IFNULL(sort_merge_passes, ''), '\n',
                                               '      }'), '') ORDER BY event_id) AS stmts
                               FROM performance_schema.events_statements_history
                              WHERE sql_text IS NOT NULL
                                AND thread_id = in_thread_id
                              GROUP BY thread_id, nesting_event_id
                            ) AS s 
                    ON trxi.thread_id = s.thread_id 
                   AND trxi.event_id = s.nesting_event_id
                 WHERE trxi.thread_id = in_thread_id
                 GROUP BY trxi.thread_id, trxi.event_id
                ) trxs
          GROUP BY thread_id
    );

IF (@old_group_concat_max_len IS NOT NULL) THEN
        SET SESSION group_concat_max_len = @old_group_concat_max_len;
    END IF;

RETURN v_output;
END$$

DELIMITER ;

-- Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
--
-- This program is free software; you can redistribute it and/or modify
-- it under the terms of the GNU General Public License as published by
-- the Free Software Foundation; version 2 of the License.
--
-- This program is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-- GNU General Public License for more details.
--
-- You should have received a copy of the GNU General Public License
-- along with this program; if not, write to the Free Software
-- Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

DROP FUNCTION IF EXISTS quote_identifier;

DELIMITER $$

-- https://dev.mysql.com/doc/refman/5.7/en/identifiers.html
-- Maximum supported length for any of the current identifiers in 5.7.5+ is 256 characters.
-- Before that, user variables could have any length.
--
-- Based on Paul Dubois' suggestion in Bug #78823/Bug #22011361.
CREATE DEFINER='mariadb.sys'@'localhost' FUNCTION quote_identifier(in_identifier TEXT)
    RETURNS TEXT CHARSET UTF8
    COMMENT '
             Description
             -----------

Takes an unquoted identifier (schema name, table name, etc.) and
             returns the identifier quoted with backticks.

Parameters
             -----------

in_identifier (TEXT):
               The identifier to quote.

Returns
             -----------

TEXT

Example
             -----------

mysql> SELECT sys.quote_identifier(''my_identifier'') AS Identifier;
             +-----------------+
             | Identifier      |
             +-----------------+
             | `my_identifier` |
             +-----------------+
             1 row in set (0.00 sec)

mysql> SELECT sys.quote_identifier(''my`idenfier'') AS Identifier;
             +----------------+
             | Identifier     |
             +----------------+
             | `my``idenfier` |
             +----------------+
             1 row in set (0.00 sec)
            '
    SQL SECURITY INVOKER
    DETERMINISTIC
    NO SQL
BEGIN
    RETURN CONCAT('`', REPLACE(in_identifier, '`', '``'), '`');
END$$

DELIMITER ;

DROP FUNCTION IF EXISTS sys_get_config;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' FUNCTION sys_get_config (
        in_variable_name VARCHAR(128),
        in_default_value VARCHAR(128)
    )
    RETURNS VARCHAR(128)
    COMMENT '
             Description
             -----------

Returns the value for the requested variable using the following logic:

1. If the option exists in sys.sys_config return the value from there.
                2. Else fall back on the provided default value.

Notes for using sys_get_config():

* If the default value argument to sys_get_config() is NULL and case 2. is reached, NULL is returned.
                  It is then expected that the caller is able to handle NULL for the given configuration option.
                * The convention is to name the user variables @sys.<name of variable>. It is <name of variable> that
                  is stored in the sys_config table and is what is expected as the argument to sys_get_config().
                * If you want to check whether the configuration option has already been set and if not assign with
                  the return value of sys_get_config() you can use IFNULL(...) (see example below). However this should
                  not be done inside a loop (e.g. for each row in a result set) as for repeated calls where assignment
                  is only needed in the first iteration using IFNULL(...) is expected to be significantly slower than
                  using an IF (...) THEN ... END IF; block (see example below).

Parameters
             -----------

in_variable_name (VARCHAR(128)):
               The name of the config option to return the value for.

in_default_value (VARCHAR(128)):
               The default value to return if the variable does not exist in sys.sys_config.

Returns
             -----------

VARCHAR(128)

Example
             -----------

-- Get the configuration value from sys.sys_config falling back on 128 if the option is not present in the table.
             mysql> SELECT sys.sys_get_config(''statement_truncate_len'', 128) AS Value;
             +-------+
             | Value |
             +-------+
             | 64    |
             +-------+
             1 row in set (0.00 sec)

-- Check whether the option is already set, if not assign - IFNULL(...) one liner example.
             mysql> SET @sys.statement_truncate_len = IFNULL(@sys.statement_truncate_len, sys.sys_get_config(''statement_truncate_len'', 64));
             Query OK, 0 rows affected (0.00 sec)

-- Check whether the option is already set, if not assign - IF ... THEN ... END IF example.
             IF (@sys.statement_truncate_len IS NULL) THEN
                 SET @sys.statement_truncate_len = sys.sys_get_config(''statement_truncate_len'', 64);
             END IF;
            '
    SQL SECURITY INVOKER
    DETERMINISTIC
    READS SQL DATA
BEGIN
    DECLARE v_value VARCHAR(128) DEFAULT NULL;
    DECLARE old_val INTEGER DEFAULT NULL;

-- Check if we have the variable in the sys.sys_config table
    SET v_value = (SELECT value FROM sys.sys_config WHERE variable = in_variable_name);
  
    -- Protection against the variable not existing in sys_config
    IF (v_value IS NULL) THEN
        SET v_value = in_default_value;
    END IF;

RETURN v_value;
END $$

DELIMITER ;

DROP FUNCTION IF EXISTS version_major;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' FUNCTION version_major ()
    RETURNS TINYINT UNSIGNED
    COMMENT '
             Description
             -----------

Returns the major version of MySQL Server.

Returns
             -----------

TINYINT UNSIGNED

Example
             -----------

mysql> SELECT VERSION(), sys.version_major();
             +--------------------------------------+---------------------+
             | VERSION()                            | sys.version_major() |
             +--------------------------------------+---------------------+
             | 5.7.9-enterprise-commercial-advanced | 5                   |
             +--------------------------------------+---------------------+
             1 row in set (0.00 sec)
            '
    SQL SECURITY INVOKER
    NOT DETERMINISTIC
    NO SQL
BEGIN
    RETURN SUBSTRING_INDEX(SUBSTRING_INDEX(VERSION(), '-', 1), '.', 1);
END$$

DELIMITER ;

DROP FUNCTION IF EXISTS version_minor;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' FUNCTION version_minor ()
    RETURNS TINYINT UNSIGNED
    COMMENT '
             Description
             -----------

Returns the minor (release series) version of MySQL Server.

Returns
             -----------

TINYINT UNSIGNED

Example
             -----------

mysql> SELECT VERSION(), sys.server_minor();
             +--------------------------------------+---------------------+
             | VERSION()                            | sys.version_minor() |
             +--------------------------------------+---------------------+
             | 5.7.9-enterprise-commercial-advanced | 7                   |
             +--------------------------------------+---------------------+
             1 row in set (0.00 sec)
            '
    SQL SECURITY INVOKER
    NOT DETERMINISTIC
    NO SQL
BEGIN
    RETURN SUBSTRING_INDEX(SUBSTRING_INDEX(SUBSTRING_INDEX(VERSION(), '-', 1), '.', 2), '.', -1);
END$$

DELIMITER ;

DROP FUNCTION IF EXISTS version_patch;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' FUNCTION version_patch ()
    RETURNS TINYINT UNSIGNED
    COMMENT '
             Description
             -----------

Returns the patch release version of MySQL Server.

Returns
             -----------

TINYINT UNSIGNED

Example
             -----------

mysql> SELECT VERSION(), sys.version_patch();
             +--------------------------------------+---------------------+
             | VERSION()                            | sys.version_patch() |
             +--------------------------------------+---------------------+
             | 5.7.9-enterprise-commercial-advanced | 9                   |
             +--------------------------------------+---------------------+
             1 row in set (0.00 sec)
            '
    SQL SECURITY INVOKER
    NOT DETERMINISTIC
    NO SQL
BEGIN
    RETURN SUBSTRING_INDEX(SUBSTRING_INDEX(VERSION(), '-', 1), '.', -1);
END$$

DELIMITER ;

--
-- View: innodb_buffer_stats_by_schema
-- 
-- Summarizes the output of the INFORMATION_SCHEMA.INNODB_BUFFER_PAGE 
-- table, aggregating by schema
--
-- 
-- mysql> select * from innodb_buffer_stats_by_schema;
-- +--------------------------+------------+------------+-------+--------------+-----------+-------------+
-- | object_schema            | allocated  | data       | pages | pages_hashed | pages_old | rows_cached |
-- +--------------------------+------------+------------+-------+--------------+-----------+-------------+
-- | mem30_trunk__instruments | 1.69 MiB   | 510.03 KiB |   108 |          108 |       108 |        3885 |
-- | InnoDB System            | 688.00 KiB | 351.62 KiB |    43 |           43 |        43 |         862 |
-- | mem30_trunk__events      | 80.00 KiB  | 21.61 KiB  |     5 |            5 |         5 |         229 |
-- +--------------------------+------------+------------+-------+--------------+-----------+-------------+
--

DELIMITER $$

BEGIN NOT ATOMIC
  DECLARE EXIT HANDLER FOR SQLEXCEPTION
  BEGIN
  END;
CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW innodb_buffer_stats_by_schema (
  object_schema,
  allocated,
  data,
  pages,
  pages_hashed,
  pages_old,
  rows_cached
) AS
SELECT IF(LOCATE('.', ibp.table_name) = 0, 'InnoDB System', REPLACE(SUBSTRING_INDEX(ibp.table_name, '.', 1), '`', '')) AS object_schema,
       sys.format_bytes(SUM(IF(ibp.compressed_size = 0, 16384, compressed_size))) AS allocated,
       sys.format_bytes(SUM(ibp.data_size)) AS data,
       COUNT(ibp.page_number) AS pages,
       COUNT(IF(ibp.is_hashed = 'YES', 1, NULL)) AS pages_hashed,
       COUNT(IF(ibp.is_old = 'YES', 1, NULL)) AS pages_old,
       ROUND(SUM(ibp.number_records)/COUNT(DISTINCT ibp.index_name)) AS rows_cached 
  FROM information_schema.innodb_buffer_page ibp 
 WHERE table_name IS NOT NULL
 GROUP BY object_schema
 ORDER BY SUM(IF(ibp.compressed_size = 0, 16384, compressed_size)) DESC;
END$$
DELIMITER ;

--
-- View: x$innodb_buffer_stats_by_schema
-- 
-- Summarizes the output of the INFORMATION_SCHEMA.INNODB_BUFFER_PAGE 
-- table, aggregating by schema
--
-- mysql> select * from x$innodb_buffer_stats_by_schema;
-- +--------------------------+-----------+--------+-------+--------------+-----------+-------------+
-- | object_schema            | allocated | data   | pages | pages_hashed | pages_old | rows_cached |
-- +--------------------------+-----------+--------+-------+--------------+-----------+-------------+
-- | mem30_trunk__instruments |   1769472 | 522272 |   108 |          108 |       108 |        3885 |
-- | InnoDB System            |    704512 | 360054 |    43 |           43 |        43 |         862 |
-- | mem30_trunk__events      |     81920 |  22125 |     5 |            5 |         5 |         229 |
-- +--------------------------+-----------+--------+-------+--------------+-----------+-------------+
--

DELIMITER $$
BEGIN NOT ATOMIC
  DECLARE EXIT HANDLER FOR SQLEXCEPTION
  BEGIN
  END;
CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$innodb_buffer_stats_by_schema (
  object_schema,
  allocated,
  data,
  pages,
  pages_hashed,
  pages_old,
  rows_cached
) AS
SELECT IF(LOCATE('.', ibp.table_name) = 0, 'InnoDB System', REPLACE(SUBSTRING_INDEX(ibp.table_name, '.', 1), '`', '')) AS object_schema,
       SUM(IF(ibp.compressed_size = 0, 16384, compressed_size)) AS allocated,
       SUM(ibp.data_size) AS data,
       COUNT(ibp.page_number) AS pages,
       COUNT(IF(ibp.is_hashed, 1, NULL)) AS pages_hashed,
       COUNT(IF(ibp.is_old, 1, NULL)) AS pages_old,
       ROUND(IFNULL(SUM(ibp.number_records)/NULLIF(COUNT(DISTINCT ibp.index_name), 0), 0)) AS rows_cached 
  FROM information_schema.innodb_buffer_page ibp 
 WHERE table_name IS NOT NULL
 GROUP BY object_schema
 ORDER BY SUM(IF(ibp.compressed_size = 0, 16384, compressed_size)) DESC;
END$$
DELIMITER ;

--
-- View: innodb_buffer_stats_by_table
-- 
-- Summarizes the output of the INFORMATION_SCHEMA.INNODB_BUFFER_PAGE 
-- table, aggregating by schema and table name
--
-- mysql> select * from innodb_buffer_stats_by_table;
-- +--------------------------+------------------------------------+------------+-----------+-------+--------------+-----------+-------------+
-- | object_schema            | object_name                        | allocated  | data      | pages | pages_hashed | pages_old | rows_cached |
-- +--------------------------+------------------------------------+------------+-----------+-------+--------------+-----------+-------------+
-- | InnoDB System            | SYS_COLUMNS                        | 128.00 KiB | 98.97 KiB |     8 |            8 |         8 |        1532 |
-- | InnoDB System            | SYS_FOREIGN                        | 128.00 KiB | 55.48 KiB |     8 |            8 |         8 |         172 |
-- | InnoDB System            | SYS_TABLES                         | 128.00 KiB | 56.18 KiB |     8 |            8 |         8 |         365 |
-- | InnoDB System            | SYS_INDEXES                        | 112.00 KiB | 76.16 KiB |     7 |            7 |         7 |        1046 |
-- | mem30_trunk__instruments | agentlatencytime                   | 96.00 KiB  | 28.83 KiB |     6 |            6 |         6 |         252 |
-- | mem30_trunk__instruments | binlogspaceusagedata               | 96.00 KiB  | 22.54 KiB |     6 |            6 |         6 |         196 |
-- | mem30_trunk__instruments | connectionsdata                    | 96.00 KiB  | 36.68 KiB |     6 |            6 |         6 |         276 |
-- ...
-- +--------------------------+------------------------------------+------------+-----------+-------+--------------+-----------+-------------+
--

DELIMITER $$
BEGIN NOT ATOMIC
DECLARE EXIT HANDLER FOR SQLEXCEPTION BEGIN END;
CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW innodb_buffer_stats_by_table (
  object_schema,
  object_name,
  allocated,
  data,
  pages,
  pages_hashed,
  pages_old,
  rows_cached
) AS
SELECT IF(LOCATE('.', ibp.table_name) = 0, 'InnoDB System', REPLACE(SUBSTRING_INDEX(ibp.table_name, '.', 1), '`', '')) AS object_schema,
       REPLACE(SUBSTRING_INDEX(ibp.table_name, '.', -1), '`', '') AS object_name,
       sys.format_bytes(SUM(IF(ibp.compressed_size = 0, 16384, compressed_size))) AS allocated,
       sys.format_bytes(SUM(ibp.data_size)) AS data,
       COUNT(ibp.page_number) AS pages,
       COUNT(IF(ibp.is_hashed = 'YES', 1, NULL)) AS pages_hashed,
       COUNT(IF(ibp.is_old = 'YES', 1, NULL)) AS pages_old,
       ROUND(SUM(ibp.number_records)/COUNT(DISTINCT ibp.index_name)) AS rows_cached 
  FROM information_schema.innodb_buffer_page ibp 
 WHERE table_name IS NOT NULL
 GROUP BY object_schema, object_name
 ORDER BY SUM(IF(ibp.compressed_size = 0, 16384, compressed_size)) DESC;
END$$
DELIMITER ;
-- Copyright (c) 2014, 2016, Oracle and/or its affiliates. All rights reserved.
--
-- This program is free software; you can redistribute it and/or modify
-- it under the terms of the GNU General Public License as published by
-- the Free Software Foundation; version 2 of the License.
--
-- This program is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-- GNU General Public License for more details.
--
-- You should have received a copy of the GNU General Public License
-- along with this program; if not, write to the Free Software
-- Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

--
-- View: x$innodb_buffer_stats_by_table
-- 
-- Summarizes the output of the INFORMATION_SCHEMA.INNODB_BUFFER_PAGE 
-- table, aggregating by schema and table name
--
-- mysql> select * from x$innodb_buffer_stats_by_table;
-- +--------------------------+------------------------------------+-----------+--------+-------+--------------+-----------+-------------+
-- | object_schema            | object_name                        | allocated | data   | pages | pages_hashed | pages_old | rows_cached |
-- +--------------------------+------------------------------------+-----------+--------+-------+--------------+-----------+-------------+
-- | InnoDB System            | SYS_COLUMNS                        |    131072 | 101350 |     8 |            8 |         8 |        1532 |
-- | InnoDB System            | SYS_FOREIGN                        |    131072 |  56808 |     8 |            8 |         8 |         172 |
-- | InnoDB System            | SYS_TABLES                         |    131072 |  57529 |     8 |            8 |         8 |         365 |
-- | InnoDB System            | SYS_INDEXES                        |    114688 |  77984 |     7 |            7 |         7 |        1046 |
-- | mem30_trunk__instruments | agentlatencytime                   |     98304 |  29517 |     6 |            6 |         6 |         252 |
-- | mem30_trunk__instruments | binlogspaceusagedata               |     98304 |  23076 |     6 |            6 |         6 |         196 |
-- | mem30_trunk__instruments | connectionsdata                    |     98304 |  37563 |     6 |            6 |         6 |         276 |
-- ...
-- +--------------------------+------------------------------------+-----------+--------+-------+--------------+-----------+-------------+
--
DELIMITER $$
BEGIN NOT ATOMIC
DECLARE EXIT HANDLER FOR SQLEXCEPTION BEGIN END;
CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$innodb_buffer_stats_by_table (
  object_schema,
  object_name,
  allocated,
  data,
  pages,
  pages_hashed,
  pages_old,
  rows_cached
) AS
SELECT IF(LOCATE('.', ibp.table_name) = 0, 'InnoDB System', REPLACE(SUBSTRING_INDEX(ibp.table_name, '.', 1), '`', '')) AS object_schema,
       REPLACE(SUBSTRING_INDEX(ibp.table_name, '.', -1), '`', '') AS object_name,
       SUM(IF(ibp.compressed_size = 0, 16384, compressed_size)) AS allocated,
       SUM(ibp.data_size) AS data,
       COUNT(ibp.page_number) AS pages,
       COUNT(IF(ibp.is_hashed, 1, NULL)) AS pages_hashed,
       COUNT(IF(ibp.is_old, 1, NULL)) AS pages_old,
       ROUND(IFNULL(SUM(ibp.number_records)/NULLIF(COUNT(DISTINCT ibp.index_name), 0), 0)) AS rows_cached 
  FROM information_schema.innodb_buffer_page ibp 
 WHERE table_name IS NOT NULL
 GROUP BY object_schema, object_name
 ORDER BY SUM(IF(ibp.compressed_size = 0, 16384, compressed_size)) DESC;
END$$
DELIMITER ;
-- Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved.
--
-- This program is free software; you can redistribute it and/or modify
-- it under the terms of the GNU General Public License as published by
-- the Free Software Foundation; version 2 of the License.
--
-- This program is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-- GNU General Public License for more details.
--
-- You should have received a copy of the GNU General Public License
-- along with this program; if not, write to the Free Software
-- Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

--
-- View: innodb_lock_waits
--
-- Give a snapshot of which InnoDB locks transactions are waiting for.
-- The lock waits are ordered by the age of the lock descending.
--
-- Versions: 5.1+ (5.1 requires InnoDB Plugin with I_S tables)
--
-- mysql> SELECT * FROM x$innodb_lock_waits\G
-- *************************** 1. row ***************************
--                 wait_started: 2014-11-11 13:39:20
--                     wait_age: 00:00:07
--                wait_age_secs: 7
--                 locked_table: `db1`.`t1`
--                 locked_index: PRIMARY
--                  locked_type: RECORD
--               waiting_trx_id: 867158
--          waiting_trx_started: 2014-11-11 13:39:15
--              waiting_trx_age: 00:00:12
--      waiting_trx_rows_locked: 0
--    waiting_trx_rows_modified: 0
--                  waiting_pid: 3
--                waiting_query: UPDATE t1 SET val = val + 1 WHERE id = 2
--              waiting_lock_id: 867158:2363:3:3
--            waiting_lock_mode: X
--              blocking_trx_id: 867157
--                 blocking_pid: 4
--               blocking_query: UPDATE t1 SET val = val + 1 + SLEEP(10) WHERE id = 2
--             blocking_lock_id: 867157:2363:3:3
--           blocking_lock_mode: X
--         blocking_trx_started: 2014-11-11 13:39:11
--             blocking_trx_age: 00:00:16
--     blocking_trx_rows_locked: 1
--   blocking_trx_rows_modified: 1
--      sql_kill_blocking_query: KILL QUERY 4
-- sql_kill_blocking_connection: KILL 4
-- 1 row in set (0.01 sec)
--
DELIMITER $$
BEGIN NOT ATOMIC
  DECLARE EXIT HANDLER FOR SQLEXCEPTION
  BEGIN
  END;
CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW innodb_lock_waits (
  wait_started,
  wait_age,
  wait_age_secs,
  locked_table,
  locked_index,
  locked_type,
  waiting_trx_id,
  waiting_trx_started,
  waiting_trx_age,
  waiting_trx_rows_locked,
  waiting_trx_rows_modified,
  waiting_pid,
  waiting_query,
  waiting_lock_id,
  waiting_lock_mode,
  blocking_trx_id,
  blocking_pid,
  blocking_query,
  blocking_lock_id,
  blocking_lock_mode,
  blocking_trx_started,
  blocking_trx_age,
  blocking_trx_rows_locked,
  blocking_trx_rows_modified,
  sql_kill_blocking_query,
  sql_kill_blocking_connection
) AS
SELECT r.trx_wait_started AS wait_started,
       TIMEDIFF(NOW(), r.trx_wait_started) AS wait_age,
       TIMESTAMPDIFF(SECOND, r.trx_wait_started, NOW()) AS wait_age_secs,
       rl.lock_table AS locked_table,
       rl.lock_index AS locked_index,
       rl.lock_type AS locked_type,
       r.trx_id AS waiting_trx_id,
       r.trx_started as waiting_trx_started,
       TIMEDIFF(NOW(), r.trx_started) AS waiting_trx_age,
       r.trx_rows_locked AS waiting_trx_rows_locked,
       r.trx_rows_modified AS waiting_trx_rows_modified,
       r.trx_mysql_thread_id AS waiting_pid,
       sys.format_statement(r.trx_query) AS waiting_query,
       rl.lock_id AS waiting_lock_id,
       rl.lock_mode AS waiting_lock_mode,
       b.trx_id AS blocking_trx_id,
       b.trx_mysql_thread_id AS blocking_pid,
       sys.format_statement(b.trx_query) AS blocking_query,
       bl.lock_id AS blocking_lock_id,
       bl.lock_mode AS blocking_lock_mode,
       b.trx_started AS blocking_trx_started,
       TIMEDIFF(NOW(), b.trx_started) AS blocking_trx_age,
       b.trx_rows_locked AS blocking_trx_rows_locked,
       b.trx_rows_modified AS blocking_trx_rows_modified,
       CONCAT('KILL QUERY ', b.trx_mysql_thread_id) AS sql_kill_blocking_query,
       CONCAT('KILL ', b.trx_mysql_thread_id) AS sql_kill_blocking_connection
  FROM information_schema.innodb_lock_waits w
       INNER JOIN information_schema.innodb_trx b    ON b.trx_id = w.blocking_trx_id
       INNER JOIN information_schema.innodb_trx r    ON r.trx_id = w.requesting_trx_id
       INNER JOIN information_schema.innodb_locks bl ON bl.lock_id = w.blocking_lock_id
       INNER JOIN information_schema.innodb_locks rl ON rl.lock_id = w.requested_lock_id
 ORDER BY r.trx_wait_started;
 END$$
DELIMITER ;

--
-- View: x$innodb_lock_waits
--
-- Give a snapshot of which InnoDB locks transactions are waiting for.
-- The lock waits are ordered by the age of the lock descending.
--
-- Versions: 5.1+ (5.1 requires InnoDB Plugin with I_S tables)
--
-- mysql> SELECT * FROM x$innodb_lock_waits\G
-- *************************** 1. row ***************************
--                 wait_started: 2014-11-11 13:39:20
--                     wait_age: 00:00:07
--                wait_age_secs: 7
--                 locked_table: `db1`.`t1`
--                 locked_index: PRIMARY
--                  locked_type: RECORD
--               waiting_trx_id: 867158
--          waiting_trx_started: 2014-11-11 13:39:15
--              waiting_trx_age: 00:00:12
--      waiting_trx_rows_locked: 0
--    waiting_trx_rows_modified: 0
--                  waiting_pid: 3
--                waiting_query: UPDATE t1 SET val = val + 1 WHERE id = 2
--              waiting_lock_id: 867158:2363:3:3
--            waiting_lock_mode: X
--              blocking_trx_id: 867157
--                 blocking_pid: 4
--               blocking_query: UPDATE t1 SET val = val + 1 + SLEEP(10) WHERE id = 2
--             blocking_lock_id: 867157:2363:3:3
--           blocking_lock_mode: X
--         blocking_trx_started: 2014-11-11 13:39:11
--             blocking_trx_age: 00:00:16
--     blocking_trx_rows_locked: 1
--   blocking_trx_rows_modified: 1
--      sql_kill_blocking_query: KILL QUERY 4
-- sql_kill_blocking_connection: KILL 4
-- 1 row in set (0.01 sec)
--

DELIMITER $$
BEGIN NOT ATOMIC 
DECLARE EXIT HANDLER FOR SQLEXCEPTION BEGIN END;

CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$innodb_lock_waits (
  wait_started,
  wait_age,
  wait_age_secs,
  locked_table,
  locked_index,
  locked_type,
  waiting_trx_id,
  waiting_trx_started,
  waiting_trx_age,
  waiting_trx_rows_locked,
  waiting_trx_rows_modified,
  waiting_pid,
  waiting_query,
  waiting_lock_id,
  waiting_lock_mode,
  blocking_trx_id,
  blocking_pid,
  blocking_query,
  blocking_lock_id,
  blocking_lock_mode,
  blocking_trx_started,
  blocking_trx_age,
  blocking_trx_rows_locked,
  blocking_trx_rows_modified,
  sql_kill_blocking_query,
  sql_kill_blocking_connection
) AS
SELECT r.trx_wait_started AS wait_started,
       TIMEDIFF(NOW(), r.trx_wait_started) AS wait_age,
       TIMESTAMPDIFF(SECOND, r.trx_wait_started, NOW()) AS wait_age_secs,
       rl.lock_table AS locked_table,
       rl.lock_index AS locked_index,
       rl.lock_type AS locked_type,
       r.trx_id AS waiting_trx_id,
       r.trx_started as waiting_trx_started,
       TIMEDIFF(NOW(), r.trx_started) AS waiting_trx_age,
       r.trx_rows_locked AS waiting_trx_rows_locked,
       r.trx_rows_modified AS waiting_trx_rows_modified,
       r.trx_mysql_thread_id AS waiting_pid,
       r.trx_query AS waiting_query,
       rl.lock_id AS waiting_lock_id,
       rl.lock_mode AS waiting_lock_mode,
       b.trx_id AS blocking_trx_id,
       b.trx_mysql_thread_id AS blocking_pid,
       b.trx_query AS blocking_query,
       bl.lock_id AS blocking_lock_id,
       bl.lock_mode AS blocking_lock_mode,
       b.trx_started AS blocking_trx_started,
       TIMEDIFF(NOW(), b.trx_started) AS blocking_trx_age,
       b.trx_rows_locked AS blocking_trx_rows_locked,
       b.trx_rows_modified AS blocking_trx_rows_modified,
       CONCAT('KILL QUERY ', b.trx_mysql_thread_id) AS sql_kill_blocking_query,
       CONCAT('KILL ', b.trx_mysql_thread_id) AS sql_kill_blocking_connection
  FROM information_schema.innodb_lock_waits w
       INNER JOIN information_schema.innodb_trx b    ON b.trx_id = w.blocking_trx_id
       INNER JOIN information_schema.innodb_trx r    ON r.trx_id = w.requesting_trx_id
       INNER JOIN information_schema.innodb_locks bl ON bl.lock_id = w.blocking_lock_id
       INNER JOIN information_schema.innodb_locks rl ON rl.lock_id = w.requested_lock_id
 ORDER BY r.trx_wait_started;
END$$
DELIMITER ;

--
-- View: schema_object_overview
-- 
-- Shows an overview of the types of objects within each schema
--
-- Note: On instances with a large number of objects, this could take
--       some time to execute, and is not recommended.
--
-- mysql> select * from schema_object_overview;
-- +---------------------------------+---------------+-------+
-- | db                              | object_type   | count |
-- +---------------------------------+---------------+-------+
-- | information_schema              | SYSTEM VIEW   |    59 |
-- | mem30_test__instruments         | BASE TABLE    |     1 |
-- | mem30_test__instruments         | INDEX (BTREE) |     2 |
-- | mem30_test__test                | BASE TABLE    |     9 |
-- | mem30_test__test                | INDEX (BTREE) |    19 |
-- ...
-- | sys                             | FUNCTION      |     8 |
-- | sys                             | PROCEDURE     |    16 |
-- | sys                             | VIEW          |    59 |
-- +---------------------------------+---------------+-------+
--

CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW schema_object_overview (
  db,
  object_type,
  count
) AS
SELECT ROUTINE_SCHEMA AS db, ROUTINE_TYPE AS object_type, COUNT(*) AS count FROM information_schema.routines GROUP BY ROUTINE_SCHEMA, ROUTINE_TYPE
 UNION 
SELECT TABLE_SCHEMA, TABLE_TYPE, COUNT(*) FROM information_schema.tables GROUP BY TABLE_SCHEMA, TABLE_TYPE
 UNION
SELECT TABLE_SCHEMA, CONCAT('INDEX (', INDEX_TYPE, ')'), COUNT(*) FROM information_schema.statistics GROUP BY TABLE_SCHEMA, INDEX_TYPE
 UNION
SELECT TRIGGER_SCHEMA, 'TRIGGER', COUNT(*) FROM information_schema.triggers GROUP BY TRIGGER_SCHEMA
 UNION
SELECT EVENT_SCHEMA, 'EVENT', COUNT(*) FROM information_schema.events GROUP BY EVENT_SCHEMA
ORDER BY DB, OBJECT_TYPE;

--
-- View: schema_auto_increment_columns
--
-- Present current auto_increment usage/capacity in all tables.
--
-- mysql> select * from schema_auto_increment_columns limit 5;
-- +-------------------+-------------------+-------------+-----------+-------------+-----------+-------------+---------------------+----------------+----------------------+
-- | table_schema      | table_name        | column_name | data_type | column_type | is_signed | is_unsigned | max_value           | auto_increment | auto_increment_ratio |
-- +-------------------+-------------------+-------------+-----------+-------------+-----------+-------------+---------------------+----------------+----------------------+
-- | test              | t1                | i           | tinyint   | tinyint(4)  |         1 |           0 |                 127 |             34 |               0.2677 |
-- | mem__advisor_text | template_meta     | hib_id      | int       | int(11)     |         1 |           0 |          2147483647 |            516 |               0.0000 |
-- | mem__advisors     | advisor_schedules | schedule_id | int       | int(11)     |         1 |           0 |          2147483647 |            249 |               0.0000 |
-- | mem__advisors     | app_identity_path | hib_id      | int       | int(11)     |         1 |           0 |          2147483647 |            251 |               0.0000 |
-- | mem__bean_config  | plists            | id          | bigint    | bigint(20)  |         1 |           0 | 9223372036854775807 |              1 |               0.0000 |
-- +-------------------+-------------------+-------------+-----------+-------------+-----------+-------------+---------------------+----------------+----------------------+
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER
VIEW schema_auto_increment_columns (
  table_schema,
  table_name,
  column_name,
  data_type,
  column_type,
  is_signed,
  is_unsigned,
  max_value,
  auto_increment,
  auto_increment_ratio
) AS
SELECT TABLE_SCHEMA,
       TABLE_NAME,
       COLUMN_NAME,
       DATA_TYPE,
       COLUMN_TYPE,
       (LOCATE('unsigned', COLUMN_TYPE) = 0) AS is_signed,
       (LOCATE('unsigned', COLUMN_TYPE) > 0) AS is_unsigned,
       (
          CASE DATA_TYPE
            WHEN 'tinyint' THEN 255
            WHEN 'smallint' THEN 65535
            WHEN 'mediumint' THEN 16777215
            WHEN 'int' THEN 4294967295
            WHEN 'bigint' THEN 18446744073709551615
          END >> IF(LOCATE('unsigned', COLUMN_TYPE) > 0, 0, 1)
       ) AS max_value,
       AUTO_INCREMENT,
       AUTO_INCREMENT / (
         CASE DATA_TYPE
           WHEN 'tinyint' THEN 255
           WHEN 'smallint' THEN 65535
           WHEN 'mediumint' THEN 16777215
           WHEN 'int' THEN 4294967295
           WHEN 'bigint' THEN 18446744073709551615
         END >> IF(LOCATE('unsigned', COLUMN_TYPE) > 0, 0, 1)
       ) AS auto_increment_ratio
  FROM INFORMATION_SCHEMA.COLUMNS
 INNER JOIN INFORMATION_SCHEMA.TABLES USING (TABLE_SCHEMA, TABLE_NAME)
 WHERE TABLE_SCHEMA NOT IN ('mysql', 'sys', 'INFORMATION_SCHEMA', 'performance_schema')
   AND TABLE_TYPE='BASE TABLE'
   AND EXTRA='auto_increment'
 ORDER BY auto_increment_ratio DESC, max_value;

CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER
VIEW x$schema_flattened_keys (
  table_schema,
  table_name,
  index_name,
  non_unique,
  subpart_exists,
  index_columns
) AS
  SELECT
    TABLE_SCHEMA,
    TABLE_NAME,
    INDEX_NAME,
    MAX(NON_UNIQUE) AS non_unique,
    MAX(IF(SUB_PART IS NULL, 0, 1)) AS subpart_exists,
    GROUP_CONCAT(COLUMN_NAME ORDER BY SEQ_IN_INDEX) AS index_columns
  FROM INFORMATION_SCHEMA.STATISTICS
  WHERE
    INDEX_TYPE='BTREE'
    AND TABLE_SCHEMA NOT IN ('mysql', 'sys', 'INFORMATION_SCHEMA', 'PERFORMANCE_SCHEMA')
  GROUP BY
    TABLE_SCHEMA, TABLE_NAME, INDEX_NAME;

--
-- View: schema_redundant_keys
--
-- Shows indexes which are made redundant (or duplicate) by other (dominant) keys.
--
-- mysql> select * from sys.schema_redundant_indexes\G
-- *************************** 1. row ***************************
--               table_schema: test
--                 table_name: rkey
--       redundant_index_name: j
--    redundant_index_columns: j
-- redundant_index_non_unique: 1
--        dominant_index_name: j_2
--     dominant_index_columns: j,k
--  dominant_index_non_unique: 1
--             subpart_exists: 0
--             sql_drop_index: ALTER TABLE `test`.`rkey` DROP INDEX `j`
-- 1 row in set (0.20 sec)
-- 
-- mysql> SHOW CREATE TABLE test.rkey\G
-- *************************** 1. row ***************************
--        Table: rkey
-- Create Table: CREATE TABLE `rkey` (
--   `i` int(11) NOT NULL,
--   `j` int(11) DEFAULT NULL,
--   `k` int(11) DEFAULT NULL,
--   PRIMARY KEY (`i`),
--   KEY `j` (`j`),
--   KEY `j_2` (`j`,`k`)
-- ) ENGINE=InnoDB DEFAULT CHARSET=latin1
-- 1 row in set (0.06 sec)
--

CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER
VIEW schema_redundant_indexes (
  table_schema,
  table_name,
  redundant_index_name,
  redundant_index_columns,
  redundant_index_non_unique,
  dominant_index_name,
  dominant_index_columns,
  dominant_index_non_unique,
  subpart_exists,
  sql_drop_index
) AS
  SELECT
    redundant_keys.table_schema,
    redundant_keys.table_name,
    redundant_keys.index_name AS redundant_index_name,
    redundant_keys.index_columns AS redundant_index_columns,
    redundant_keys.non_unique AS redundant_index_non_unique,
    dominant_keys.index_name AS dominant_index_name,
    dominant_keys.index_columns AS dominant_index_columns,
    dominant_keys.non_unique AS dominant_index_non_unique,
    IF(redundant_keys.subpart_exists OR dominant_keys.subpart_exists, 1 ,0) AS subpart_exists,
    CONCAT(
      'ALTER TABLE `', redundant_keys.table_schema, '`.`', redundant_keys.table_name, '` DROP INDEX `', redundant_keys.index_name, '`'
      ) AS sql_drop_index
  FROM
    x$schema_flattened_keys AS redundant_keys
    INNER JOIN x$schema_flattened_keys AS dominant_keys
    USING (TABLE_SCHEMA, TABLE_NAME)
  WHERE
    redundant_keys.index_name != dominant_keys.index_name
    AND (
      ( 
        /* Identical columns */
        (redundant_keys.index_columns = dominant_keys.index_columns)
        AND (
          (redundant_keys.non_unique > dominant_keys.non_unique)
          OR (redundant_keys.non_unique = dominant_keys.non_unique 
          	AND IF(redundant_keys.index_name='PRIMARY', '', redundant_keys.index_name) > IF(dominant_keys.index_name='PRIMARY', '', dominant_keys.index_name)
          )
        )
      )
      OR
      ( 
        /* Non-unique prefix columns */
        LOCATE(CONCAT(redundant_keys.index_columns, ','), dominant_keys.index_columns) = 1
        AND redundant_keys.non_unique = 1
      )
      OR
      ( 
        /* Unique prefix columns */
        LOCATE(CONCAT(dominant_keys.index_columns, ','), redundant_keys.index_columns) = 1
        AND dominant_keys.non_unique = 0
      )
    );

--
-- View: ps_check_lost_instrumentation
-- 
-- Used to check whether Performance Schema is not able to monitor
-- all runtime data - only returns variables that have lost instruments
--
-- mysql> select * from ps_check_lost_instrumentation;
-- +----------------------------------------+----------------+
-- | variable_name                          | variable_value |
-- +----------------------------------------+----------------+
-- | Performance_schema_file_handles_lost   | 101223         |
-- | Performance_schema_file_instances_lost | 1231           |
-- +----------------------------------------+----------------+
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW ps_check_lost_instrumentation (
  variable_name,
  variable_value
)
AS
SELECT variable_name, variable_value
  FROM performance_schema.global_status
 WHERE variable_name LIKE 'perf%lost'
   AND variable_value > 0;

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW latest_file_io (
  thread,
  file,
  latency,
  operation,
  requested
) AS
SELECT IF(id IS NULL, 
             CONCAT(SUBSTRING_INDEX(name, '/', -1), ':', thread_id), 
             CONCAT(user, '@', host, ':', id)
          ) thread, 
       sys.format_path(object_name) file, 
       sys.format_time(timer_wait) AS latency, 
       operation, 
       sys.format_bytes(number_of_bytes) AS requested
  FROM performance_schema.events_waits_history_long 
  JOIN performance_schema.threads USING (thread_id)
  LEFT JOIN information_schema.processlist ON processlist_id = id
 WHERE object_name IS NOT NULL
   AND event_name LIKE 'wait/io/file/%'
 ORDER BY timer_start;

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$latest_file_io (
  thread,
  file,
  latency,
  operation,
  requested
) AS
SELECT IF(id IS NULL, 
             CONCAT(SUBSTRING_INDEX(name, '/', -1), ':', thread_id), 
             CONCAT(user, '@', host, ':', id)
          ) thread, 
       object_name file, 
       timer_wait AS latency, 
       operation, 
       number_of_bytes AS requested
  FROM performance_schema.events_waits_history_long 
  JOIN performance_schema.threads USING (thread_id)
  LEFT JOIN information_schema.processlist ON processlist_id = id
 WHERE object_name IS NOT NULL
   AND event_name LIKE 'wait/io/file/%'
 ORDER BY timer_start;

--
-- View: io_by_thread_by_latency
--
-- Show the top IO consumers by thread, ordered by total latency
--
-- mysql> select * from io_by_thread_by_latency;
-- +---------------------+-------+---------------+-------------+-------------+-------------+-----------+----------------+
-- | user                | total | total_latency | min_latency | avg_latency | max_latency | thread_id | processlist_id |
-- +---------------------+-------+---------------+-------------+-------------+-------------+-----------+----------------+
-- | root@localhost      | 11580 | 18.01 s       | 429.78 ns   | 1.12 ms     | 181.07 ms   |        25 |              6 |
-- | main                |  1358 | 1.31 s        | 475.02 ns   | 2.27 ms     | 350.70 ms   |         1 |           NULL |
-- | page_cleaner_thread |   654 | 147.44 ms     | 588.12 ns   | 225.44 us   | 46.41 ms    |        18 |           NULL |
-- | io_write_thread     |   131 | 107.75 ms     | 8.60 us     | 822.55 us   | 27.69 ms    |         8 |           NULL |
-- | io_write_thread     |    46 | 47.07 ms      | 10.64 us    | 1.02 ms     | 16.90 ms    |         9 |           NULL |
-- | io_write_thread     |    71 | 46.99 ms      | 9.11 us     | 661.81 us   | 17.04 ms    |        11 |           NULL |
-- | io_log_thread       |    20 | 21.01 ms      | 14.25 us    | 1.05 ms     | 7.08 ms     |         3 |           NULL |
-- | srv_master_thread   |    13 | 17.60 ms      | 8.49 us     | 1.35 ms     | 9.99 ms     |        16 |           NULL |
-- | srv_purge_thread    |     4 | 1.81 ms       | 34.31 us    | 452.45 us   | 1.02 ms     |        17 |           NULL |
-- | io_write_thread     |    19 | 951.39 us     | 9.75 us     | 50.07 us    | 297.47 us   |        10 |           NULL |
-- | signal_handler      |     3 | 218.03 us     | 21.64 us    | 72.68 us    | 154.84 us   |        19 |           NULL |
-- +---------------------+-------+---------------+-------------+-------------+-------------+-----------+----------------+
--

CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW io_by_thread_by_latency (
  user,
  total,
  total_latency,
  min_latency,
  avg_latency,
  max_latency,
  thread_id,
  processlist_id
)
AS
SELECT IF(processlist_id IS NULL, 
             SUBSTRING_INDEX(name, '/', -1), 
             CONCAT(processlist_user, '@', processlist_host)
          ) user, 
       SUM(count_star) total,
       sys.format_time(SUM(sum_timer_wait)) total_latency,
       sys.format_time(MIN(min_timer_wait)) min_latency,
       sys.format_time(AVG(avg_timer_wait)) avg_latency,
       sys.format_time(MAX(max_timer_wait)) max_latency,
       thread_id,
       processlist_id
  FROM performance_schema.events_waits_summary_by_thread_by_event_name 
  LEFT JOIN performance_schema.threads USING (thread_id)
 WHERE event_name LIKE 'wait/io/file/%'
   AND sum_timer_wait > 0
 GROUP BY thread_id, processlist_id, user
 ORDER BY SUM(sum_timer_wait) DESC;

--
-- View: x$io_by_thread_by_latency
--
-- Show the top IO consumers by thread, ordered by total latency
--
-- mysql> select * from x$io_by_thread_by_latency;
-- +---------------------+-------+----------------+-------------+-----------------+--------------+-----------+----------------+
-- | user                | total | total_latency  | min_latency | avg_latency     | max_latency  | thread_id | processlist_id |
-- +---------------------+-------+----------------+-------------+-----------------+--------------+-----------+----------------+
-- | root@localhost      | 11587 | 18007539905680 |      429780 | 1120831681.6667 | 181065665560 |        25 |              6 |
-- | main                |  1358 |  1309001741320 |      475020 | 2269581997.8000 | 350700491310 |         1 |           NULL |
-- | page_cleaner_thread |   654 |   147435455960 |      588120 |  225436198.0000 |  46412043990 |        18 |           NULL |
-- | io_write_thread     |   131 |   107754483070 |     8603140 |  822553303.0000 |  27691592500 |         8 |           NULL |
-- | io_write_thread     |    46 |    47074926860 |    10642710 | 1023367631.0000 |  16899745070 |         9 |           NULL |
-- | io_write_thread     |    71 |    46988801210 |     9108320 |  661814075.0000 |  17042760020 |        11 |           NULL |
-- | io_log_thread       |    20 |    21007710490 |    14250600 | 1050385336.0000 |   7081255090 |         3 |           NULL |
-- | srv_master_thread   |    13 |    17601511720 |     8486270 | 1353962324.0000 |   9990100380 |        16 |           NULL |
-- | srv_purge_thread    |     4 |     1809792270 |    34307000 |  452447879.0000 |   1018887740 |        17 |           NULL |
-- | io_write_thread     |    19 |      951385890 |     9745450 |   50072763.0000 |    297468080 |        10 |           NULL |
-- | signal_handler      |     3 |      218026640 |    21639800 |   72675421.0000 |    154841440 |        19 |           NULL |
-- +---------------------+-------+----------------+-------------+-----------------+--------------+-----------+----------------+
--

CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$io_by_thread_by_latency (
  user,
  total,
  total_latency,
  min_latency,
  avg_latency,
  max_latency,
  thread_id,
  processlist_id
)
AS
SELECT IF(processlist_id IS NULL, 
             SUBSTRING_INDEX(name, '/', -1), 
             CONCAT(processlist_user, '@', processlist_host)
          ) user, 
       SUM(count_star) total,
       SUM(sum_timer_wait) total_latency,
       MIN(min_timer_wait) min_latency,
       AVG(avg_timer_wait) avg_latency,
       MAX(max_timer_wait) max_latency,
       thread_id,
       processlist_id
  FROM performance_schema.events_waits_summary_by_thread_by_event_name 
  LEFT JOIN performance_schema.threads USING (thread_id)
 WHERE event_name LIKE 'wait/io/file/%'
   AND sum_timer_wait > 0
 GROUP BY thread_id, processlist_id, user
 ORDER BY SUM(sum_timer_wait) DESC;

--
-- View: io_global_by_file_by_bytes
--
-- Shows the top global IO consumers by bytes usage by file.
--
-- mysql> SELECT * FROM io_global_by_file_by_bytes LIMIT 5;
-- +--------------------------------------------+------------+------------+-----------+-------------+---------------+-----------+------------+-----------+
-- | file                                       | count_read | total_read | avg_read  | count_write | total_written | avg_write | total      | write_pct |
-- +--------------------------------------------+------------+------------+-----------+-------------+---------------+-----------+------------+-----------+
-- | @@datadir/ibdata1                          |        147 | 4.27 MiB   | 29.71 KiB |           3 | 48.00 KiB     | 16.00 KiB | 4.31 MiB   |      1.09 |
-- | @@datadir/mysql/proc.MYD                   |        347 | 85.35 KiB  | 252 bytes |         111 | 19.08 KiB     | 176 bytes | 104.43 KiB |     18.27 |
-- | @@datadir/ib_logfile0                      |          6 | 68.00 KiB  | 11.33 KiB |           8 | 4.00 KiB      | 512 bytes | 72.00 KiB  |      5.56 |
-- | /opt/mysql/5.5.33/share/english/errmsg.sys |          3 | 43.68 KiB  | 14.56 KiB |           0 | 0 bytes       | 0 bytes   | 43.68 KiB  |      0.00 |
-- | /opt/mysql/5.5.33/share/charsets/Index.xml |          1 | 17.89 KiB  | 17.89 KiB |           0 | 0 bytes       | 0 bytes   | 17.89 KiB  |      0.00 |
-- +--------------------------------------------+------------+------------+-----------+-------------+---------------+-----------+------------+-----------+
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW io_global_by_file_by_bytes (
  file,
  count_read,
  total_read,
  avg_read,
  count_write,
  total_written,
  avg_write,
  total,
  write_pct
) AS
SELECT sys.format_path(file_name) AS file, 
       count_read, 
       sys.format_bytes(sum_number_of_bytes_read) AS total_read,
       sys.format_bytes(IFNULL(sum_number_of_bytes_read / NULLIF(count_read, 0), 0)) AS avg_read,
       count_write, 
       sys.format_bytes(sum_number_of_bytes_write) AS total_written,
       sys.format_bytes(IFNULL(sum_number_of_bytes_write / NULLIF(count_write, 0), 0.00)) AS avg_write,
       sys.format_bytes(sum_number_of_bytes_read + sum_number_of_bytes_write) AS total, 
       IFNULL(ROUND(100-((sum_number_of_bytes_read/ NULLIF((sum_number_of_bytes_read+sum_number_of_bytes_write), 0))*100), 2), 0.00) AS write_pct 
  FROM performance_schema.file_summary_by_instance
 ORDER BY sum_number_of_bytes_read + sum_number_of_bytes_write DESC;

--
-- View: x$io_global_by_file_by_bytes
--
-- Shows the top global IO consumers by bytes usage by file.
--
-- mysql> SELECT * FROM x$io_global_by_file_by_bytes LIMIT 5;
-- +------------------------------------------------------+------------+------------+------------+-------------+---------------+------------+---------+-----------+
-- | file                                                 | count_read | total_read | avg_read   | count_write | total_written | avg_write  | total   | write_pct |
-- +------------------------------------------------------+------------+------------+------------+-------------+---------------+------------+---------+-----------+
-- | /Users/mark/sandboxes/msb_5_5_33/data/ibdata1        |        147 |    4472832 | 30427.4286 |           3 |         49152 | 16384.0000 | 4521984 |      1.09 |
-- | /Users/mark/sandboxes/msb_5_5_33/data/mysql/proc.MYD |        347 |      87397 |   251.8646 |         111 |         19536 |   176.0000 |  106933 |     18.27 |
-- | /Users/mark/sandboxes/msb_5_5_33/data/ib_logfile0    |          6 |      69632 | 11605.3333 |           8 |          4096 |   512.0000 |   73728 |      5.56 |
-- | /opt/mysql/5.5.33/share/english/errmsg.sys           |          3 |      44724 | 14908.0000 |           0 |             0 |     0.0000 |   44724 |      0.00 |
-- | /opt/mysql/5.5.33/share/charsets/Index.xml           |          1 |      18317 | 18317.0000 |           0 |             0 |     0.0000 |   18317 |      0.00 |
-- +------------------------------------------------------+------------+------------+------------+-------------+---------------+------------+---------+-----------+
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$io_global_by_file_by_bytes (
  file,
  count_read,
  total_read,
  avg_read,
  count_write,
  total_written,
  avg_write,
  total,
  write_pct
) AS
SELECT file_name AS file, 
       count_read, 
       sum_number_of_bytes_read AS total_read,
       IFNULL(sum_number_of_bytes_read / NULLIF(count_read, 0), 0) AS avg_read,
       count_write, 
       sum_number_of_bytes_write AS total_written,
       IFNULL(sum_number_of_bytes_write / NULLIF(count_write, 0), 0.00) AS avg_write,
       sum_number_of_bytes_read + sum_number_of_bytes_write AS total, 
       IFNULL(ROUND(100-((sum_number_of_bytes_read/ NULLIF((sum_number_of_bytes_read+sum_number_of_bytes_write), 0))*100), 2), 0.00) AS write_pct 
  FROM performance_schema.file_summary_by_instance
 ORDER BY sum_number_of_bytes_read + sum_number_of_bytes_write DESC;

--
-- View: io_global_by_file_by_latency
--
-- Shows the top global IO consumers by latency by file.
--
-- mysql> select * from io_global_by_file_by_latency limit 5;
-- +-----------------------------------------------------------+-------+---------------+------------+--------------+-------------+---------------+------------+--------------+
-- | file                                                      | total | total_latency | count_read | read_latency | count_write | write_latency | count_misc | misc_latency |
-- +-----------------------------------------------------------+-------+---------------+------------+--------------+-------------+---------------+------------+--------------+
-- | @@datadir/sys/wait_classes_global_by_avg_latency_raw.frm~ |    24 | 451.99 ms     |          0 | 0 ps         |           4 | 108.07 us     |         20 | 451.88 ms    |
-- | @@datadir/sys/innodb_buffer_stats_by_schema_raw.frm~      |    24 | 379.84 ms     |          0 | 0 ps         |           4 | 108.88 us     |         20 | 379.73 ms    |
-- | @@datadir/sys/io_by_thread_by_latency_raw.frm~            |    24 | 379.46 ms     |          0 | 0 ps         |           4 | 101.37 us     |         20 | 379.36 ms    |
-- | @@datadir/ibtmp1                                          |    53 | 373.45 ms     |          0 | 0 ps         |          48 | 246.08 ms     |          5 | 127.37 ms    |
-- | @@datadir/sys/statement_analysis_raw.frm~                 |    24 | 353.14 ms     |          0 | 0 ps         |           4 | 94.96 us      |         20 | 353.04 ms    |
-- +-----------------------------------------------------------+-------+---------------+------------+--------------+-------------+---------------+------------+--------------+
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW io_global_by_file_by_latency (
  file,
  total,
  total_latency,
  count_read,
  read_latency,
  count_write,
  write_latency,
  count_misc,
  misc_latency
) AS
SELECT sys.format_path(file_name) AS file, 
       count_star AS total, 
       sys.format_time(sum_timer_wait) AS total_latency,
       count_read,
       sys.format_time(sum_timer_read) AS read_latency,
       count_write,
       sys.format_time(sum_timer_write) AS write_latency,
       count_misc,
       sys.format_time(sum_timer_misc) AS misc_latency
  FROM performance_schema.file_summary_by_instance
 ORDER BY sum_timer_wait DESC;

--
-- View: x$io_global_by_file_by_latency
--
-- Shows the top global IO consumers by latency by file.
--
-- mysql> select * from x$io_global_by_file_by_latency limit 5;
-- +--------------------------------------------------------------------------------------+-------+---------------+------------+--------------+-------------+---------------+------------+--------------+
-- | file                                                                                 | total | total_latency | count_read | read_latency | count_write | write_latency | count_misc | misc_latency |
-- +--------------------------------------------------------------------------------------+-------+---------------+------------+--------------+-------------+---------------+------------+--------------+
-- | /Users/mark/sandboxes/msb_5_7_2/data/sys/wait_classes_global_by_avg_latency_raw.frm~ |    30 |  513959738110 |          0 |            0 |           5 |     132130960 |         25 | 513827607150 |
-- | /Users/mark/sandboxes/msb_5_7_2/data/sys/innodb_buffer_stats_by_schema_raw.frm~      |    30 |  490149888410 |          0 |            0 |           5 |     483887040 |         25 | 489666001370 |
-- | /Users/mark/sandboxes/msb_5_7_2/data/sys/io_by_thread_by_latency_raw.frm~            |    30 |  427724241620 |          0 |            0 |           5 |     131399580 |         25 | 427592842040 |
-- | /Users/mark/sandboxes/msb_5_7_2/data/sys/innodb_buffer_stats_by_schema.frm~          |    30 |  406392559950 |          0 |            0 |           5 |     104082160 |         25 | 406288477790 |
-- | /Users/mark/sandboxes/msb_5_7_2/data/sys/statement_analysis_raw.frm~                 |    30 |  395527510430 |          0 |            0 |           5 |     118724840 |         25 | 395408785590 |
-- +--------------------------------------------------------------------------------------+-------+---------------+------------+--------------+-------------+---------------+------------+--------------+
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$io_global_by_file_by_latency (
  file,
  total,
  total_latency,
  count_read,
  read_latency,
  count_write,
  write_latency,
  count_misc,
  misc_latency
) AS
SELECT file_name AS file, 
       count_star AS total, 
       sum_timer_wait AS total_latency,
       count_read,
       sum_timer_read AS read_latency,
       count_write,
       sum_timer_write AS write_latency,
       count_misc,
       sum_timer_misc AS misc_latency
  FROM performance_schema.file_summary_by_instance
 ORDER BY sum_timer_wait DESC;

--
-- View: io_global_by_wait_by_bytes
--
-- Shows the top global IO consumer classes by bytes usage.
--
-- mysql> select * from io_global_by_wait_by_bytes;
-- +--------------------+--------+---------------+-------------+-------------+-------------+------------+------------+-----------+-------------+---------------+-------------+-----------------+
-- | event_name         | total  | total_latency | min_latency | avg_latency | max_latency | count_read | total_read | avg_read  | count_write | total_written | avg_written | total_requested |
-- +--------------------+--------+---------------+-------------+-------------+-------------+------------+------------+-----------+-------------+---------------+-------------+-----------------+
-- | myisam/dfile       | 163681 | 983.13 ms     | 379.08 ns   | 6.01 us     | 22.06 ms    |      68737 | 127.31 MiB | 1.90 KiB  |     1012221 | 121.52 MiB    | 126 bytes   | 248.83 MiB      |
-- | myisam/kfile       |   1775 | 375.13 ms     | 1.02 us     | 211.34 us   | 35.15 ms    |      54066 | 9.97 MiB   | 193 bytes |      428257 | 12.40 MiB     | 30 bytes    | 22.37 MiB       |
-- | sql/FRM            |  57889 | 8.40 s        | 19.44 ns    | 145.05 us   | 336.71 ms   |       8009 | 2.60 MiB   | 341 bytes |       14675 | 2.91 MiB      | 208 bytes   | 5.51 MiB        |
-- | sql/global_ddl_log |    164 | 75.96 ms      | 5.72 us     | 463.19 us   | 7.43 ms     |         20 | 80.00 KiB  | 4.00 KiB  |          76 | 304.00 KiB    | 4.00 KiB    | 384.00 KiB      |
-- | sql/file_parser    |    419 | 601.37 ms     | 1.96 us     | 1.44 ms     | 37.14 ms    |         66 | 42.01 KiB  | 652 bytes |          64 | 226.98 KiB    | 3.55 KiB    | 268.99 KiB      |
-- | sql/binlog         |    190 | 6.79 s        | 1.56 us     | 35.76 ms    | 4.21 s      |         52 | 60.54 KiB  | 1.16 KiB  |           0 | 0 bytes       | 0 bytes     | 60.54 KiB       |
-- | sql/ERRMSG         |      5 | 2.03 s        | 8.61 us     | 405.40 ms   | 2.03 s      |          3 | 51.82 KiB  | 17.27 KiB |           0 | 0 bytes       | 0 bytes     | 51.82 KiB       |
-- | mysys/charset      |      3 | 196.52 us     | 17.61 us    | 65.51 us    | 137.33 us   |          1 | 17.83 KiB  | 17.83 KiB |           0 | 0 bytes       | 0 bytes     | 17.83 KiB       |
-- | sql/partition      |     81 | 18.87 ms      | 888.08 ns   | 232.92 us   | 4.67 ms     |         66 | 2.75 KiB   | 43 bytes  |           8 | 288 bytes     | 36 bytes    | 3.04 KiB        |
-- | sql/dbopt          | 329166 | 26.95 s       | 2.06 us     | 81.89 us    | 178.71 ms   |          0 | 0 bytes    | 0 bytes   |           9 | 585 bytes     | 65 bytes    | 585 bytes       |
-- | sql/relaylog       |      7 | 1.18 ms       | 838.84 ns   | 168.30 us   | 892.70 us   |          0 | 0 bytes    | 0 bytes   |           1 | 120 bytes     | 120 bytes   | 120 bytes       |
-- | mysys/cnf          |      5 | 171.61 us     | 303.26 ns   | 34.32 us    | 115.21 us   |          3 | 56 bytes   | 19 bytes  |           0 | 0 bytes       | 0 bytes     | 56 bytes        |
-- | sql/pid            |      3 | 220.55 us     | 29.29 us    | 73.52 us    | 143.11 us   |          0 | 0 bytes    | 0 bytes   |           1 | 5 bytes       | 5 bytes     | 5 bytes         |
-- | sql/casetest       |      1 | 121.19 us     | 121.19 us   | 121.19 us   | 121.19 us   |          0 | 0 bytes    | 0 bytes   |           0 | 0 bytes       | 0 bytes     | 0 bytes         |
-- | sql/binlog_index   |      5 | 593.47 us     | 1.07 us     | 118.69 us   | 535.90 us   |          0 | 0 bytes    | 0 bytes   |           0 | 0 bytes       | 0 bytes     | 0 bytes         |
-- | sql/misc           |     23 | 2.73 ms       | 65.14 us    | 118.50 us   | 255.31 us   |          0 | 0 bytes    | 0 bytes   |           0 | 0 bytes       | 0 bytes     | 0 bytes         |
-- +--------------------+--------+---------------+-------------+-------------+-------------+------------+------------+-----------+-------------+---------------+-------------+-----------------+
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW io_global_by_wait_by_bytes (
  event_name,
  total,
  total_latency,
  min_latency,
  avg_latency,
  max_latency,
  count_read,
  total_read,
  avg_read,
  count_write,
  total_written,
  avg_written,
  total_requested
) AS
SELECT SUBSTRING_INDEX(event_name, '/', -2) event_name,
       count_star AS total,
       sys.format_time(sum_timer_wait) AS total_latency,
       sys.format_time(min_timer_wait) AS min_latency,
       sys.format_time(avg_timer_wait) AS avg_latency,
       sys.format_time(max_timer_wait) AS max_latency,
       count_read,
       sys.format_bytes(sum_number_of_bytes_read) AS total_read,
       sys.format_bytes(IFNULL(sum_number_of_bytes_read / NULLIF(count_read, 0), 0)) AS avg_read,
       count_write,
       sys.format_bytes(sum_number_of_bytes_write) AS total_written,
       sys.format_bytes(IFNULL(sum_number_of_bytes_write / NULLIF(count_write, 0), 0)) AS avg_written,
       sys.format_bytes(sum_number_of_bytes_write + sum_number_of_bytes_read) AS total_requested
  FROM performance_schema.file_summary_by_event_name
 WHERE event_name LIKE 'wait/io/file/%' 
   AND count_star > 0
 ORDER BY sum_number_of_bytes_write + sum_number_of_bytes_read DESC;

--
-- View: x$io_global_by_wait_by_bytes
--
-- Shows the top global IO consumer classes by bytes usage.
--
-- mysql> select * from x$io_global_by_wait_by_bytes;
-- +-------------------------+-------+---------------+-------------+-------------+--------------+------------+------------+------------+-------------+---------------+-------------+-----------------+
-- | event_name              | total | total_latency | min_latency | avg_latency | max_latency  | count_read | total_read | avg_read   | count_write | total_written | avg_written | total_requested |
-- +-------------------------+-------+---------------+-------------+-------------+--------------+------------+------------+------------+-------------+---------------+-------------+-----------------+
-- | innodb/innodb_data_file |   151 |  334405721910 |     8399560 |  2214607429 | 107444600380 |        147 |    4472832 | 30427.4286 |           0 |             0 |      0.0000 |         4472832 |
-- | sql/FRM                 |   555 |  147752034170 |      674830 |   266219881 |  57705900850 |        270 |     112174 |   415.4593 |           0 |             0 |      0.0000 |          112174 |
-- | innodb/innodb_log_file  |    22 |   56776429970 |     2476890 |  2580746816 |  18883021430 |          6 |      69632 | 11605.3333 |           5 |          2560 |    512.0000 |           72192 |
-- | sql/ERRMSG              |     5 |   11862056180 |    14883960 |  2372411236 |  11109473700 |          3 |      44724 | 14908.0000 |           0 |             0 |      0.0000 |           44724 |
-- | mysys/charset           |     3 |    7256869230 |    19796270 |  2418956410 |   7198498320 |          1 |      18317 | 18317.0000 |           0 |             0 |      0.0000 |           18317 |
-- | myisam/kfile            |   135 |   10194698280 |      784160 |    75516283 |   2593514950 |         40 |       9216 |   230.4000 |          33 |          1017 |     30.8182 |           10233 |
-- | myisam/dfile            |    68 |   10527909730 |      772850 |   154822201 |   7600014630 |          9 |       6667 |   740.7778 |           0 |             0 |      0.0000 |            6667 |
-- | sql/pid                 |     3 |     216507330 |    41296580 |    72169110 |    100617530 |          0 |          0 |     0.0000 |           1 |             6 |      6.0000 |               6 |
-- | sql/casetest            |     5 |     185261570 |     4105530 |    37052314 |    113488310 |          0 |          0 |     0.0000 |           0 |             0 |      0.0000 |               0 |
-- | sql/global_ddl_log      |     2 |      21538010 |     3121560 |    10769005 |     18416450 |          0 |          0 |     0.0000 |           0 |             0 |      0.0000 |               0 |
-- | sql/dbopt               |    10 |    1004267680 |     1164930 |   100426768 |    939894930 |          0 |          0 |     0.0000 |           0 |             0 |      0.0000 |               0 |
-- +-------------------------+-------+---------------+-------------+-------------+--------------+------------+------------+------------+-------------+---------------+-------------+-----------------+
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$io_global_by_wait_by_bytes (
  event_name,
  total,
  total_latency,
  min_latency,
  avg_latency,
  max_latency,
  count_read,
  total_read,
  avg_read,
  count_write,
  total_written,
  avg_written,
  total_requested
) AS
SELECT SUBSTRING_INDEX(event_name, '/', -2) AS event_name,
       count_star AS total,
       sum_timer_wait AS total_latency,
       min_timer_wait AS min_latency,
       avg_timer_wait AS avg_latency,
       max_timer_wait AS max_latency,
       count_read,
       sum_number_of_bytes_read AS total_read,
       IFNULL(sum_number_of_bytes_read / NULLIF(count_read, 0), 0) AS avg_read,
       count_write,
       sum_number_of_bytes_write AS total_written,
       IFNULL(sum_number_of_bytes_write / NULLIF(count_write, 0), 0) AS avg_written,
       sum_number_of_bytes_write + sum_number_of_bytes_read AS total_requested
  FROM performance_schema.file_summary_by_event_name
 WHERE event_name LIKE 'wait/io/file/%' 
   AND count_star > 0
 ORDER BY sum_number_of_bytes_write + sum_number_of_bytes_read DESC;

--
-- View: io_global_by_wait_by_latency
--
-- Shows the top global IO consumers by latency.
--
-- mysql> SELECT * FROM io_global_by_wait_by_latency;
-- +-------------------------+-------+---------------+-------------+-------------+--------------+---------------+--------------+------------+------------+-----------+-------------+---------------+-------------+
-- | event_name              | total | total_latency | avg_latency | max_latency | read_latency | write_latency | misc_latency | count_read | total_read | avg_read  | count_write | total_written | avg_written |
-- +-------------------------+-------+---------------+-------------+-------------+--------------+---------------+--------------+------------+------------+-----------+-------------+---------------+-------------+
-- | sql/file_parser         |  5433 | 30.20 s       | 5.56 ms     | 203.65 ms   | 22.08 ms     | 24.89 ms      | 30.16 s      |         24 | 6.18 KiB   | 264 bytes |         737 | 2.15 MiB      | 2.99 KiB    |
-- | innodb/innodb_data_file |  1344 | 1.52 s        | 1.13 ms     | 350.70 ms   | 203.82 ms    | 450.96 ms     | 868.21 ms    |        147 | 2.30 MiB   | 16.00 KiB |        1001 | 53.61 MiB     | 54.84 KiB   |
-- | innodb/innodb_log_file  |   828 | 893.48 ms     | 1.08 ms     | 30.11 ms    | 16.32 ms     | 705.89 ms     | 171.27 ms    |          6 | 68.00 KiB  | 11.33 KiB |         413 | 2.19 MiB      | 5.42 KiB    |
-- | myisam/kfile            |  7642 | 242.34 ms     | 31.71 us    | 19.27 ms    | 73.60 ms     | 23.48 ms      | 145.26 ms    |        758 | 135.63 KiB | 183 bytes |        4386 | 232.52 KiB    | 54 bytes    |
-- | myisam/dfile            | 12540 | 223.47 ms     | 17.82 us    | 32.50 ms    | 87.76 ms     | 16.97 ms      | 118.74 ms    |       5390 | 4.49 MiB   | 873 bytes |        1448 | 2.65 MiB      | 1.88 KiB    |
-- | csv/metadata            |     8 | 28.98 ms      | 3.62 ms     | 20.15 ms    | 399.27 us    | 0 ps          | 28.58 ms     |          2 | 70 bytes   | 35 bytes  |           0 | 0 bytes       | 0 bytes     |
-- | mysys/charset           |     3 | 24.24 ms      | 8.08 ms     | 24.15 ms    | 24.15 ms     | 0 ps          | 93.18 us     |          1 | 17.31 KiB  | 17.31 KiB |           0 | 0 bytes       | 0 bytes     |
-- | sql/ERRMSG              |     5 | 20.43 ms      | 4.09 ms     | 19.31 ms    | 20.32 ms     | 0 ps          | 103.20 us    |          3 | 58.97 KiB  | 19.66 KiB |           0 | 0 bytes       | 0 bytes     |
-- | mysys/cnf               |     5 | 11.37 ms      | 2.27 ms     | 11.28 ms    | 11.29 ms     | 0 ps          | 78.22 us     |          3 | 56 bytes   | 19 bytes  |           0 | 0 bytes       | 0 bytes     |
-- | sql/dbopt               |    57 | 4.04 ms       | 70.92 us    | 843.70 us   | 0 ps         | 186.43 us     | 3.86 ms      |          0 | 0 bytes    | 0 bytes   |           7 | 431 bytes     | 62 bytes    |
-- | csv/data                |     4 | 411.55 us     | 102.89 us   | 234.89 us   | 0 ps         | 0 ps          | 411.55 us    |          0 | 0 bytes    | 0 bytes   |           0 | 0 bytes       | 0 bytes     |
-- | sql/misc                |    22 | 340.38 us     | 15.47 us    | 33.77 us    | 0 ps         | 0 ps          | 340.38 us    |          0 | 0 bytes    | 0 bytes   |           0 | 0 bytes       | 0 bytes     |
-- | archive/data            |    39 | 277.86 us     | 7.12 us     | 16.18 us    | 0 ps         | 0 ps          | 277.86 us    |          0 | 0 bytes    | 0 bytes   |           0 | 0 bytes       | 0 bytes     |
-- | sql/pid                 |     3 | 218.03 us     | 72.68 us    | 154.84 us   | 0 ps         | 21.64 us      | 196.39 us    |          0 | 0 bytes    | 0 bytes   |           1 | 6 bytes       | 6 bytes     |
-- | sql/casetest            |     5 | 197.15 us     | 39.43 us    | 126.31 us   | 0 ps         | 0 ps          | 197.15 us    |          0 | 0 bytes    | 0 bytes   |           0 | 0 bytes       | 0 bytes     |
-- | sql/global_ddl_log      |     2 | 14.60 us      | 7.30 us     | 12.12 us    | 0 ps         | 0 ps          | 14.60 us     |          0 | 0 bytes    | 0 bytes   |           0 | 0 bytes       | 0 bytes     |
-- +-------------------------+-------+---------------+-------------+-------------+--------------+---------------+--------------+------------+------------+-----------+-------------+---------------+-------------+
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW io_global_by_wait_by_latency (
  event_name,
  total,
  total_latency,
  avg_latency,
  max_latency,
  read_latency,
  write_latency,
  misc_latency,
  count_read,
  total_read,
  avg_read,
  count_write,
  total_written,
  avg_written
) AS
SELECT SUBSTRING_INDEX(event_name, '/', -2) AS event_name,
       count_star AS total,
       sys.format_time(sum_timer_wait) AS total_latency,
       sys.format_time(avg_timer_wait) AS avg_latency,
       sys.format_time(max_timer_wait) AS max_latency,
       sys.format_time(sum_timer_read) AS read_latency,
       sys.format_time(sum_timer_write) AS write_latency,
       sys.format_time(sum_timer_misc) AS misc_latency,
       count_read,
       sys.format_bytes(sum_number_of_bytes_read) AS total_read,
       sys.format_bytes(IFNULL(sum_number_of_bytes_read / NULLIF(count_read, 0), 0)) AS avg_read,
       count_write,
       sys.format_bytes(sum_number_of_bytes_write) AS total_written,
       sys.format_bytes(IFNULL(sum_number_of_bytes_write / NULLIF(count_write, 0), 0)) AS avg_written
  FROM performance_schema.file_summary_by_event_name 
 WHERE event_name LIKE 'wait/io/file/%'
   AND count_star > 0
 ORDER BY sum_timer_wait DESC;

--
-- View: x$io_global_by_wait_by_latency
--
-- Shows the top global IO consumers by latency.
--
-- mysql> select * from x$io_global_by_wait_by_latency;
-- +-------------------------+-------+----------------+-------------+--------------+--------------+---------------+----------------+------------+------------+------------+-------------+---------------+-------------+
-- | event_name              | total | total_latency  | avg_latency | max_latency  | read_latency | write_latency | misc_latency   | count_read | total_read | avg_read   | count_write | total_written | avg_written |
-- +-------------------------+-------+----------------+-------------+--------------+--------------+---------------+----------------+------------+------------+------------+-------------+---------------+-------------+
-- | sql/file_parser         |  5945 | 33615441247050 |  5654405471 | 203652881640 |  22093704230 |   27389668280 | 33565957874540 |         26 |       7008 |   269.5385 |         808 |       2479209 |   3068.3280 |
-- | sql/FRM                 |  6332 |  1755386796800 |   277224688 | 145624702340 | 519139578620 |    1677016640 |  1234570201540 |       2040 |     865905 |   424.4632 |         439 |        103445 |    235.6378 |
-- | innodb/innodb_data_file |  1344 |  1522989889460 |  1133176798 | 350700491310 | 203817502460 |  450959403830 |   868212983170 |        147 |    2408448 | 16384.0000 |        1001 |      56213504 |  56157.3467 |
-- | innodb/innodb_log_file  |   828 |   893475794640 |  1079076921 |  30108124800 |  16315236730 |  705886928240 |   171273629670 |          6 |      69632 | 11605.3333 |         413 |       2294272 |   5555.1380 |
-- | myisam/kfile            |  7826 |   246001992860 |    31433883 |  19265276810 |  74419162870 |   23923730090 |   147659099900 |        770 |     141058 |   183.1922 |        4516 |        249602 |     55.2706 |
-- | myisam/dfile            | 13431 |   228191713620 |    16989882 |  32500163410 |  89162969350 |   17341973610 |   121686770660 |       5819 |    4873176 |   837.4594 |        1577 |       2853444 |   1809.4128 |
-- | csv/metadata            |     8 |    28975194560 |  3621899320 |  20148109020 |    399265620 |             0 |    28575928940 |          2 |         70 |    35.0000 |           0 |             0 |      0.0000 |
-- | mysys/charset           |     3 |    24244722970 |  8081574072 |  24151547420 |  24151547420 |             0 |       93175550 |          1 |      17722 | 17722.0000 |           0 |             0 |      0.0000 |
-- | sql/ERRMSG              |     5 |    20427386850 |  4085477370 |  19312386730 |  20324183100 |             0 |      103203750 |          3 |      60390 | 20130.0000 |           0 |             0 |      0.0000 |
-- | mysys/cnf               |     5 |    11366169230 |  2273233846 |  11283602460 |  11287953040 |             0 |       78216190 |          3 |         56 |    18.6667 |           0 |             0 |      0.0000 |
-- | sql/dbopt               |    57 |     4042348570 |    70918224 |    843703380 |            0 |     186430270 |     3855918300 |          0 |          0 |     0.0000 |           7 |           431 |     61.5714 |
-- | csv/data                |     4 |      411548280 |   102887070 |    234886080 |            0 |             0 |      411548280 |          0 |          0 |     0.0000 |           0 |             0 |      0.0000 |
-- | sql/misc                |    24 |      369128240 |    15380092 |     33771660 |            0 |             0 |      369128240 |          0 |          0 |     0.0000 |           0 |             0 |      0.0000 |
-- | archive/data            |    39 |      277856540 |     7124169 |     16180840 |            0 |             0 |      277856540 |          0 |          0 |     0.0000 |           0 |             0 |      0.0000 |
-- | sql/pid                 |     3 |      218026640 |    72675421 |    154841440 |            0 |      21639800 |      196386840 |          0 |          0 |     0.0000 |           1 |             6 |      6.0000 |
-- | sql/casetest            |     5 |      197152150 |    39430430 |    126310080 |            0 |             0 |      197152150 |          0 |          0 |     0.0000 |           0 |             0 |      0.0000 |
-- | sql/global_ddl_log      |     2 |       14604980 |     7302490 |     12120550 |            0 |             0 |       14604980 |          0 |          0 |     0.0000 |           0 |             0 |      0.0000 |
-- +-------------------------+-------+----------------+-------------+--------------+--------------+---------------+----------------+------------+------------+------------+-------------+---------------+-------------+
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$io_global_by_wait_by_latency (
  event_name,
  total,
  total_latency,
  avg_latency,
  max_latency,
  read_latency,
  write_latency,
  misc_latency,
  count_read,
  total_read,
  avg_read,
  count_write,
  total_written,
  avg_written
) AS
SELECT SUBSTRING_INDEX(event_name, '/', -2) AS event_name,
       count_star AS total,
       sum_timer_wait AS total_latency,
       avg_timer_wait AS avg_latency,
       max_timer_wait AS max_latency,
       sum_timer_read AS read_latency,
       sum_timer_write AS write_latency,
       sum_timer_misc AS misc_latency,
       count_read,
       sum_number_of_bytes_read AS total_read,
       IFNULL(sum_number_of_bytes_read / NULLIF(count_read, 0), 0) AS avg_read,
       count_write,
       sum_number_of_bytes_write AS total_written,
       IFNULL(sum_number_of_bytes_write / NULLIF(count_write, 0), 0) AS avg_written
  FROM performance_schema.file_summary_by_event_name 
 WHERE event_name LIKE 'wait/io/file/%'
   AND count_star > 0
 ORDER BY sum_timer_wait DESC;

--
-- View: memory_by_user_by_current_bytes
--
-- Summarizes memory use by user using the 5.7 Performance Schema instrumentation.
-- 
-- When the user found is NULL, it is assumed to be a "background" thread.  
--
-- mysql> select * from memory_by_user_by_current_bytes;
-- +------+--------------------+-------------------+-------------------+-------------------+-----------------+
-- | user | current_count_used | current_allocated | current_avg_alloc | current_max_alloc | total_allocated |
-- +------+--------------------+-------------------+-------------------+-------------------+-----------------+
-- | root |               1401 | 1.09 MiB          | 815 bytes         | 334.97 KiB        | 42.73 MiB       |
-- | mark |                201 | 496.08 KiB        | 2.47 KiB          | 334.97 KiB        | 5.50 MiB        |
-- +------+--------------------+-------------------+-------------------+-------------------+-----------------+
--

CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW memory_by_user_by_current_bytes (
  user,
  current_count_used,
  current_allocated,
  current_avg_alloc,
  current_max_alloc,
  total_allocated
) AS
SELECT IF(user IS NULL, 'background', user) AS user,
       SUM(current_count_used) AS current_count_used,
       sys.format_bytes(SUM(current_number_of_bytes_used)) AS current_allocated,
       sys.format_bytes(IFNULL(SUM(current_number_of_bytes_used) / NULLIF(SUM(current_count_used), 0), 0)) AS current_avg_alloc,
       sys.format_bytes(MAX(current_number_of_bytes_used)) AS current_max_alloc,
       sys.format_bytes(SUM(sum_number_of_bytes_alloc)) AS total_allocated
  FROM performance_schema.memory_summary_by_user_by_event_name
 GROUP BY IF(user IS NULL, 'background', user)
 ORDER BY SUM(current_number_of_bytes_used) DESC;

--
-- View: x$memory_by_user_by_current_bytes
--
-- Summarizes memory use by user
-- 
-- When the user found is NULL, it is assumed to be a "background" thread.  
--
-- mysql> select * from x$memory_by_user_by_current_bytes;
-- +------+--------------------+-------------------+-------------------+-------------------+-----------------+
-- | user | current_count_used | current_allocated | current_avg_alloc | current_max_alloc | total_allocated |
-- +------+--------------------+-------------------+-------------------+-------------------+-----------------+
-- | root |               1399 |           1124553 |          803.8263 |            343008 |        45426133 |
-- | mark |                201 |            507990 |         2527.3134 |            343008 |         5769804 |
-- +------+--------------------+-------------------+-------------------+-------------------+-----------------+
--

CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$memory_by_user_by_current_bytes (
  user,
  current_count_used,
  current_allocated,
  current_avg_alloc,
  current_max_alloc,
  total_allocated
) AS
SELECT IF(user IS NULL, 'background', user) AS user,
       SUM(current_count_used) AS current_count_used,
       SUM(current_number_of_bytes_used) AS current_allocated,
       IFNULL(SUM(current_number_of_bytes_used) / NULLIF(SUM(current_count_used), 0), 0) AS current_avg_alloc,
       MAX(current_number_of_bytes_used) AS current_max_alloc,
       SUM(sum_number_of_bytes_alloc) AS total_allocated
  FROM performance_schema.memory_summary_by_user_by_event_name
 GROUP BY IF(user IS NULL, 'background', user)
 ORDER BY SUM(current_number_of_bytes_used) DESC;

--
-- View: memory_by_host_by_current_bytes
--
-- Summarizes memory use by host using the 5.7 Performance Schema instrumentation.
-- 
-- When the host found is NULL, it is assumed to be a local "background" thread.  
--
-- mysql> select * from memory_by_host_by_current_bytes;
-- +------------+--------------------+-------------------+-------------------+-------------------+-----------------+
-- | host       | current_count_used | current_allocated | current_avg_alloc | current_max_alloc | total_allocated |
-- +------------+--------------------+-------------------+-------------------+-------------------+-----------------+
-- | background |               2773 | 10.84 MiB         | 4.00 KiB          | 8.00 MiB          | 30.69 MiB       |
-- | localhost  |               1509 | 809.30 KiB        | 549 bytes         | 176.38 KiB        | 83.59 MiB       |
-- +------------+--------------------+-------------------+-------------------+-------------------+-----------------+
--

CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW memory_by_host_by_current_bytes (
  host,
  current_count_used,
  current_allocated,
  current_avg_alloc,
  current_max_alloc,
  total_allocated
) AS
SELECT IF(host IS NULL, 'background', host) AS host,
       SUM(current_count_used) AS current_count_used,
       sys.format_bytes(SUM(current_number_of_bytes_used)) AS current_allocated,
       sys.format_bytes(IFNULL(SUM(current_number_of_bytes_used) / NULLIF(SUM(current_count_used), 0), 0)) AS current_avg_alloc,
       sys.format_bytes(MAX(current_number_of_bytes_used)) AS current_max_alloc,
       sys.format_bytes(SUM(sum_number_of_bytes_alloc)) AS total_allocated
  FROM performance_schema.memory_summary_by_host_by_event_name
 GROUP BY IF(host IS NULL, 'background', host)
 ORDER BY SUM(current_number_of_bytes_used) DESC;

--
-- View: x$memory_by_host_by_current_bytes
--
-- Summarizes memory use by host
-- 
-- When the host found is NULL, it is assumed to be a local "background" thread.  
--
-- mysql> select * from x$memory_by_host_by_current_bytes;
-- +------------+--------------------+-------------------+-------------------+-------------------+-----------------+
-- | host       | current_count_used | current_allocated | current_avg_alloc | current_max_alloc | total_allocated |
-- +------------+--------------------+-------------------+-------------------+-------------------+-----------------+
-- | background |               2773 |          11362444 |         4097.5276 |           8390792 |        32184183 |
-- | localhost  |               1508 |            813040 |          539.1512 |            180616 |        88168182 |
-- +------------+--------------------+-------------------+-------------------+-------------------+-----------------+
--

CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$memory_by_host_by_current_bytes (
  host,
  current_count_used,
  current_allocated,
  current_avg_alloc,
  current_max_alloc,
  total_allocated
) AS
SELECT IF(host IS NULL, 'background', host) AS host,
       SUM(current_count_used) AS current_count_used,
       SUM(current_number_of_bytes_used) AS current_allocated,
       IFNULL(SUM(current_number_of_bytes_used) / NULLIF(SUM(current_count_used), 0), 0) AS current_avg_alloc,
       MAX(current_number_of_bytes_used) AS current_max_alloc,
       SUM(sum_number_of_bytes_alloc) AS total_allocated
  FROM performance_schema.memory_summary_by_host_by_event_name
 GROUP BY IF(host IS NULL, 'background', host)
 ORDER BY SUM(current_number_of_bytes_used) DESC;

--
-- View: memory_by_thread_by_current_bytes
--
-- Summarizes memory use by user using the 5.7 Performance Schema instrumentation.
-- 
-- User shows either the background or foreground user name appropriately.
--
-- mysql> select * from sys.memory_by_thread_by_current_bytes limit 5;
-- +-----------+----------------+--------------------+-------------------+-------------------+-------------------+-----------------+
-- | thread_id | user           | current_count_used | current_allocated | current_avg_alloc | current_max_alloc | total_allocated |
-- +-----------+----------------+--------------------+-------------------+-------------------+-------------------+-----------------+
-- |         1 | sql/main       |              29333 | 166.02 MiB        | 5.80 KiB          | 131.13 MiB        | 196.00 MiB      |
-- |        55 | root@localhost |                175 | 1.04 MiB          | 6.09 KiB          | 350.86 KiB        | 67.37 MiB       |
-- |        58 | root@localhost |                236 | 368.13 KiB        | 1.56 KiB          | 312.05 KiB        | 130.34 MiB      |
-- |       904 | root@localhost |                 32 | 18.00 KiB         | 576 bytes         | 16.00 KiB         | 6.68 MiB        |
-- |       970 | root@localhost |                 12 | 16.80 KiB         | 1.40 KiB          | 16.00 KiB         | 1.20 MiB        |
-- +-----------+----------------+--------------------+-------------------+-------------------+-------------------+-----------------+
--

CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW memory_by_thread_by_current_bytes (
  thread_id,
  user,
  current_count_used,
  current_allocated,
  current_avg_alloc,
  current_max_alloc,
  total_allocated
) AS
SELECT thread_id,
       IF(t.name = 'thread/sql/one_connection', 
          CONCAT(t.processlist_user, '@', t.processlist_host), 
          REPLACE(t.name, 'thread/', '')) user,
       SUM(mt.current_count_used) AS current_count_used,
       sys.format_bytes(SUM(mt.current_number_of_bytes_used)) AS current_allocated,
       sys.format_bytes(IFNULL(SUM(mt.current_number_of_bytes_used) / NULLIF(SUM(current_count_used), 0), 0)) AS current_avg_alloc,
       sys.format_bytes(MAX(mt.current_number_of_bytes_used)) AS current_max_alloc,
       sys.format_bytes(SUM(mt.sum_number_of_bytes_alloc)) AS total_allocated
  FROM performance_schema.memory_summary_by_thread_by_event_name AS mt
  JOIN performance_schema.threads AS t USING (thread_id)
 GROUP BY thread_id, IF(t.name = 'thread/sql/one_connection', 
          CONCAT(t.processlist_user, '@', t.processlist_host), 
          REPLACE(t.name, 'thread/', ''))
 ORDER BY SUM(current_number_of_bytes_used) DESC;

--
-- View: x$memory_by_thread_by_current_bytes
--
-- Summarizes memory use by user
-- 
-- When the user found is NULL, it is assumed to be a "background" thread.  
--
-- mysql> select * from sys.x$memory_by_thread_by_current_bytes limit 5;
-- +-----------+----------------+--------------------+-------------------+-------------------+-------------------+-----------------+
-- | thread_id | user           | current_count_used | current_allocated | current_avg_alloc | current_max_alloc | total_allocated |
-- +-----------+----------------+--------------------+-------------------+-------------------+-------------------+-----------------+
-- |         1 | sql/main       |              29333 |         174089450 |         5934.9351 |         137494528 |       205523135 |
-- |        55 | root@localhost |                173 |           1074664 |         6211.9306 |            359280 |        72248413 |
-- |        58 | root@localhost |                240 |            377099 |         1571.2458 |            319536 |       169483870 |
-- |      1152 | root@localhost |                 30 |             56949 |         1898.3000 |             16391 |         1010024 |
-- |      1154 | root@localhost |                 34 |             56369 |         1657.9118 |             16391 |         1958771 |
-- +-----------+----------------+--------------------+-------------------+-------------------+-------------------+-----------------+
--

CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$memory_by_thread_by_current_bytes (
  thread_id,
  user,
  current_count_used,
  current_allocated,
  current_avg_alloc,
  current_max_alloc,
  total_allocated
) AS
SELECT t.thread_id,
       IF(t.name = 'thread/sql/one_connection', 
          CONCAT(t.processlist_user, '@', t.processlist_host), 
          REPLACE(t.name, 'thread/', '')) user,
       SUM(mt.current_count_used) AS current_count_used,
       SUM(mt.current_number_of_bytes_used) AS current_allocated,
       IFNULL(SUM(mt.current_number_of_bytes_used) / NULLIF(SUM(current_count_used), 0), 0) AS current_avg_alloc,
       MAX(mt.current_number_of_bytes_used) AS current_max_alloc,
       SUM(mt.sum_number_of_bytes_alloc) AS total_allocated
  FROM performance_schema.memory_summary_by_thread_by_event_name AS mt
  JOIN performance_schema.threads AS t USING (thread_id)
 GROUP BY thread_id, IF(t.name = 'thread/sql/one_connection', 
          CONCAT(t.processlist_user, '@', t.processlist_host), 
          REPLACE(t.name, 'thread/', ''))
 ORDER BY SUM(mt.current_number_of_bytes_used) DESC;

--
-- View: memory_global_by_current_bytes
-- 
-- Shows the current memory usage within the server globally broken down by allocation type.
--
-- mysql> select * from memory_global_by_current_bytes;
-- +-------------------------------------------------+---------------+---------------+-------------------+------------+-------------+----------------+
-- | event_name                                      | current_count | current_alloc | current_avg_alloc | high_count | high_alloc  | high_avg_alloc |
-- +-------------------------------------------------+---------------+---------------+-------------------+------------+-------------+----------------+
-- | memory/performance_schema/internal_buffers      |            62 | 293.80 MiB    | 4.74 MiB          |         62 | 293.80 MiB  | 4.74 MiB       |
-- | memory/innodb/buf_buf_pool                      |             1 | 131.06 MiB    | 131.06 MiB        |          1 | 131.06 MiB  | 131.06 MiB     |
-- | memory/innodb/log0log                           |             9 | 8.01 MiB      | 911.15 KiB        |          9 | 8.01 MiB    | 911.15 KiB     |
-- | memory/mysys/KEY_CACHE                          |             3 | 8.00 MiB      | 2.67 MiB          |          3 | 8.00 MiB    | 2.67 MiB       |
-- | memory/innodb/hash0hash                         |            27 | 4.73 MiB      | 179.51 KiB        |         27 | 6.84 MiB    | 259.47 KiB     |
-- | memory/innodb/os0event                          |         24998 | 4.01 MiB      | 168 bytes         |      24998 | 4.01 MiB    | 168 bytes      |
-- ...
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW memory_global_by_current_bytes (
  event_name,
  current_count,
  current_alloc,
  current_avg_alloc,
  high_count,
  high_alloc,
  high_avg_alloc
) AS
SELECT event_name,
       current_count_used AS current_count,
       sys.format_bytes(current_number_of_bytes_used) AS current_alloc,
       sys.format_bytes(IFNULL(current_number_of_bytes_used / NULLIF(current_count_used, 0), 0)) AS current_avg_alloc,
       high_count_used AS high_count,
       sys.format_bytes(high_number_of_bytes_used) AS high_alloc,
       sys.format_bytes(IFNULL(high_number_of_bytes_used / NULLIF(high_count_used, 0), 0)) AS high_avg_alloc
  FROM performance_schema.memory_summary_global_by_event_name
 WHERE current_number_of_bytes_used > 0
 ORDER BY current_number_of_bytes_used DESC;

--
-- View: x$memory_global_by_current_bytes
-- 
-- Shows the current memory usage within the server globally broken down by allocation type.
--
-- mysql> select * from x$memory_global_by_current_bytes;
-- +-------------------------------------------------+---------------+---------------+-------------------+------------+------------+----------------+
-- | event_name                                      | current_count | current_alloc | current_avg_alloc | high_count | high_alloc | high_avg_alloc |
-- +-------------------------------------------------+---------------+---------------+-------------------+------------+------------+----------------+
-- | memory/performance_schema/internal_buffers      |            62 |     308073712 |      4968930.8387 |         62 |  308073712 |   4968930.8387 |
-- | memory/innodb/buf_buf_pool                      |             1 |     137428992 |    137428992.0000 |          1 |  137428992 | 137428992.0000 |
-- | memory/innodb/log0log                           |             9 |       8397152 |       933016.8889 |          9 |    8397152 |    933016.8889 |
-- | memory/mysys/KEY_CACHE                          |             3 |       8390792 |      2796930.6667 |          3 |    8390792 |   2796930.6667 |
-- | memory/innodb/hash0hash                         |            27 |       4962992 |       183814.5185 |         27 |    7173904 |    265700.1481 |
-- | memory/innodb/os0event                          |         24998 |       4199664 |          168.0000 |      24998 |    4199664 |       168.0000 |
-- ...
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$memory_global_by_current_bytes (
  event_name,
  current_count,
  current_alloc,
  current_avg_alloc,
  high_count,
  high_alloc,
  high_avg_alloc
) AS
SELECT event_name,
       current_count_used AS current_count,
       current_number_of_bytes_used AS current_alloc,
       IFNULL(current_number_of_bytes_used / NULLIF(current_count_used, 0), 0) AS current_avg_alloc,
       high_count_used AS high_count,
       high_number_of_bytes_used AS high_alloc,
       IFNULL(high_number_of_bytes_used / NULLIF(high_count_used, 0), 0) AS high_avg_alloc
  FROM performance_schema.memory_summary_global_by_event_name
 WHERE current_number_of_bytes_used > 0
 ORDER BY current_number_of_bytes_used DESC;

--
-- View: memory_global_total
-- 
-- Shows the total memory usage within the server globally.
--
-- mysql> select * from memory_global_total;
-- +-----------------+
-- | total_allocated |
-- +-----------------+
-- | 123.35 MiB      |
-- +-----------------+
--

CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW memory_global_total (
  total_allocated
) AS
SELECT sys.format_bytes(SUM(CURRENT_NUMBER_OF_BYTES_USED)) total_allocated
  FROM performance_schema.memory_summary_global_by_event_name;

--
-- View: x$memory_global_total
-- 
-- Shows the total memory usage within the server globally
--
-- mysql> select * from x$memory_global_total;
-- +-----------------+
-- | total_allocated |
-- +-----------------+
-- |         1420023 |
-- +-----------------+
--

CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$memory_global_total (
  total_allocated
) AS
SELECT SUM(CURRENT_NUMBER_OF_BYTES_USED) total_allocated
  FROM performance_schema.memory_summary_global_by_event_name;

--
-- View: schema_index_statistics
--
-- Statistics around indexes.
--
-- Ordered by the total wait time descending - top indexes are most contended.
--
-- mysql> select * from schema_index_statistics limit 5;
-- +------------------+-------------+------------+---------------+----------------+---------------+----------------+--------------+----------------+--------------+----------------+
-- | table_schema     | table_name  | index_name | rows_selected | select_latency | rows_inserted | insert_latency | rows_updated | update_latency | rows_deleted | delete_latency |
-- +------------------+-------------+------------+---------------+----------------+---------------+----------------+--------------+----------------+--------------+----------------+
-- | mem              | mysqlserver | PRIMARY    |          6208 | 108.27 ms      |             0 | 0 ps           |         5470 | 1.47 s         |            0 | 0 ps           |
-- | mem              | innodb      | PRIMARY    |          4666 | 76.27 ms       |             0 | 0 ps           |         4454 | 571.47 ms      |            0 | 0 ps           |
-- | mem              | connection  | PRIMARY    |          1064 | 20.98 ms       |             0 | 0 ps           |         1064 | 457.30 ms      |            0 | 0 ps           |
-- | mem              | environment | PRIMARY    |          5566 | 151.17 ms      |             0 | 0 ps           |          694 | 252.57 ms      |            0 | 0 ps           |
-- | mem              | querycache  | PRIMARY    |          1698 | 27.99 ms       |             0 | 0 ps           |         1698 | 371.72 ms      |            0 | 0 ps           |
-- +------------------+-------------+------------+---------------+----------------+---------------+----------------+--------------+----------------+--------------+----------------+
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW schema_index_statistics (
  table_schema,
  table_name,
  index_name,
  rows_selected,
  select_latency,
  rows_inserted,
  insert_latency,
  rows_updated,
  update_latency,
  rows_deleted,
  delete_latency
) AS
SELECT OBJECT_SCHEMA AS table_schema,
       OBJECT_NAME AS table_name,
       INDEX_NAME as index_name,
       COUNT_FETCH AS rows_selected,
       sys.format_time(SUM_TIMER_FETCH) AS select_latency,
       COUNT_INSERT AS rows_inserted,
       sys.format_time(SUM_TIMER_INSERT) AS insert_latency,
       COUNT_UPDATE AS rows_updated,
       sys.format_time(SUM_TIMER_UPDATE) AS update_latency,
       COUNT_DELETE AS rows_deleted,
       sys.format_time(SUM_TIMER_INSERT) AS delete_latency
  FROM performance_schema.table_io_waits_summary_by_index_usage
 WHERE index_name IS NOT NULL
 ORDER BY sum_timer_wait DESC;

--
-- View: x$schema_index_statistics
--
-- Statistics around indexes.
--
-- Ordered by the total wait time descending - top indexes are most contended.
--
-- mysql> SELECT * FROM x$schema_index_statistics LIMIT 5;
-- +---------------+----------------------+-------------------+---------------+----------------+---------------+----------------+--------------+----------------+--------------+----------------+
-- | table_schema  | table_name           | index_name        | rows_selected | select_latency | rows_inserted | insert_latency | rows_updated | update_latency | rows_deleted | delete_latency |
-- +---------------+----------------------+-------------------+---------------+----------------+---------------+----------------+--------------+----------------+--------------+----------------+
-- | common_schema | _global_sql_tokens   | PRIMARY           |          1886 |     1129676730 |             0 |              0 |            0 |              0 |         1878 |              0 |
-- | common_schema | _script_statements   | PRIMARY           |          4606 |     4212160680 |             0 |              0 |            0 |              0 |            0 |              0 |
-- | common_schema | _global_qs_variables | declaration_depth |           256 |     1650193090 |             0 |              0 |           32 |     1372148050 |            0 |              0 |
-- | common_schema | _global_qs_variables | PRIMARY           |             0 |              0 |             0 |              0 |            0 |              0 |           16 |              0 |
-- | common_schema | metadata             | PRIMARY           |             5 |       76730810 |             0 |              0 |            4 |      114310170 |            0 |              0 |
-- +---------------+----------------------+-------------------+---------------+----------------+---------------+----------------+--------------+----------------+--------------+----------------+
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$schema_index_statistics (
  table_schema,
  table_name,
  index_name,
  rows_selected,
  select_latency,
  rows_inserted,
  insert_latency,
  rows_updated,
  update_latency,
  rows_deleted,
  delete_latency
) AS
SELECT OBJECT_SCHEMA AS table_schema,
       OBJECT_NAME AS table_name,
       INDEX_NAME as index_name,
       COUNT_FETCH AS rows_selected,
       SUM_TIMER_FETCH AS select_latency,
       COUNT_INSERT AS rows_inserted,
       SUM_TIMER_INSERT AS insert_latency,
       COUNT_UPDATE AS rows_updated,
       SUM_TIMER_UPDATE AS update_latency,
       COUNT_DELETE AS rows_deleted,
       SUM_TIMER_INSERT AS delete_latency
  FROM performance_schema.table_io_waits_summary_by_index_usage
 WHERE index_name IS NOT NULL
 ORDER BY sum_timer_wait DESC;

--
-- View: x$ps_schema_table_statistics_io
--
-- Helper view for schema_table_statistics
-- Having this view with ALGORITHM = TEMPTABLE means MySQL can use the optimizations for
-- materialized views to improve the overall performance.
--
-- mysql> SELECT * FROM x$ps_schema_table_statistics_io LIMIT 1\G
-- *************************** 1. row ***************************
--              table_schema: charsets
--                table_name: Index
--                count_read: 1
--  sum_number_of_bytes_read: 18710
--            sum_timer_read: 20229409070
--               count_write: 0
-- sum_number_of_bytes_write: 0
--           sum_timer_write: 0
--                count_misc: 2
--            sum_timer_misc: 80768480
--

CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$ps_schema_table_statistics_io (
  table_schema,
  table_name,
  count_read,
  sum_number_of_bytes_read,
  sum_timer_read,
  count_write,
  sum_number_of_bytes_write,
  sum_timer_write,
  count_misc,
  sum_timer_misc
) AS
SELECT extract_schema_from_file_name(file_name) AS table_schema,
       extract_table_from_file_name(file_name) AS table_name,
       SUM(count_read) AS count_read,
       SUM(sum_number_of_bytes_read) AS sum_number_of_bytes_read,
       SUM(sum_timer_read) AS sum_timer_read,
       SUM(count_write) AS count_write,
       SUM(sum_number_of_bytes_write) AS sum_number_of_bytes_write,
       SUM(sum_timer_write) AS sum_timer_write,
       SUM(count_misc) AS count_misc,
       SUM(sum_timer_misc) AS sum_timer_misc
  FROM performance_schema.file_summary_by_instance
 GROUP BY table_schema, table_name;

--
-- View: schema_table_statistics
--
-- Statistics around tables.
--
-- Ordered by the total wait time descending - top tables are most contended.
-- 
-- mysql> SELECT * FROM schema_table_statistics\G
-- *************************** 1. row ***************************
--      table_schema: sys
--        table_name: sys_config
--     total_latency: 0 ps
--      rows_fetched: 0
--     fetch_latency: 0 ps
--     rows_inserted: 0
--    insert_latency: 0 ps
--      rows_updated: 0
--    update_latency: 0 ps
--      rows_deleted: 0
--    delete_latency: 0 ps
--  io_read_requests: 8
--           io_read: 2.28 KiB
--   io_read_latency: 727.32 us
-- io_write_requests: 0
--          io_write: 0 bytes
--  io_write_latency: 0 ps
--  io_misc_requests: 10
--   io_misc_latency: 126.88 us
--

CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW schema_table_statistics (
  table_schema,
  table_name,
  total_latency,
  rows_fetched,
  fetch_latency,
  rows_inserted,
  insert_latency,
  rows_updated,
  update_latency,
  rows_deleted,
  delete_latency,
  io_read_requests,
  io_read,
  io_read_latency,
  io_write_requests,
  io_write,
  io_write_latency,
  io_misc_requests,
  io_misc_latency
) AS
SELECT pst.object_schema AS table_schema,
       pst.object_name AS table_name,
       sys.format_time(pst.sum_timer_wait) AS total_latency,
       pst.count_fetch AS rows_fetched,
       sys.format_time(pst.sum_timer_fetch) AS fetch_latency,
       pst.count_insert AS rows_inserted,
       sys.format_time(pst.sum_timer_insert) AS insert_latency,
       pst.count_update AS rows_updated,
       sys.format_time(pst.sum_timer_update) AS update_latency,
       pst.count_delete AS rows_deleted,
       sys.format_time(pst.sum_timer_delete) AS delete_latency,
       fsbi.count_read AS io_read_requests,
       sys.format_bytes(fsbi.sum_number_of_bytes_read) AS io_read,
       sys.format_time(fsbi.sum_timer_read) AS io_read_latency,
       fsbi.count_write AS io_write_requests,
       sys.format_bytes(fsbi.sum_number_of_bytes_write) AS io_write,
       sys.format_time(fsbi.sum_timer_write) AS io_write_latency,
       fsbi.count_misc AS io_misc_requests,
       sys.format_time(fsbi.sum_timer_misc) AS io_misc_latency
  FROM performance_schema.table_io_waits_summary_by_table AS pst
  LEFT JOIN x$ps_schema_table_statistics_io AS fsbi
    ON pst.object_schema = fsbi.table_schema
   AND pst.object_name = fsbi.table_name
 ORDER BY pst.sum_timer_wait DESC;

--
-- View: x$schema_table_statistics
--
-- Statistics around tables.
--
-- Ordered by the total wait time descending - top tables are most contended.
-- 
-- mysql> select * from x$schema_table_statistics\G
-- *************************** 1. row ***************************
--      table_schema: sys
--        table_name: sys_config
--     total_latency: 0
--      rows_fetched: 0
--     fetch_latency: 0
--     rows_inserted: 0
--    insert_latency: 0
--      rows_updated: 0
--    update_latency: 0
--      rows_deleted: 0
--    delete_latency: 0
--  io_read_requests: 8
--           io_read: 2336
--   io_read_latency: 727319710
-- io_write_requests: 0
--          io_write: 0
--  io_write_latency: 0
--  io_misc_requests: 10
--   io_misc_latency: 126879350
--
 
CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$schema_table_statistics (
  table_schema,
  table_name,
  total_latency,
  rows_fetched,
  fetch_latency,
  rows_inserted,
  insert_latency,
  rows_updated,
  update_latency,
  rows_deleted,
  delete_latency,
  io_read_requests,
  io_read,
  io_read_latency,
  io_write_requests,
  io_write,
  io_write_latency,
  io_misc_requests,
  io_misc_latency
) AS
SELECT pst.object_schema AS table_schema,
       pst.object_name AS table_name,
       pst.sum_timer_wait AS total_latency,
       pst.count_fetch AS rows_fetched,
       pst.sum_timer_fetch AS fetch_latency,
       pst.count_insert AS rows_inserted,
       pst.sum_timer_insert AS insert_latency,
       pst.count_update AS rows_updated,
       pst.sum_timer_update AS update_latency,
       pst.count_delete AS rows_deleted,
       pst.sum_timer_delete AS delete_latency,
       fsbi.count_read AS io_read_requests,
       fsbi.sum_number_of_bytes_read AS io_read,
       fsbi.sum_timer_read AS io_read_latency,
       fsbi.count_write AS io_write_requests,
       fsbi.sum_number_of_bytes_write AS io_write,
       fsbi.sum_timer_write AS io_write_latency,
       fsbi.count_misc AS io_misc_requests,
       fsbi.sum_timer_misc AS io_misc_latency
  FROM performance_schema.table_io_waits_summary_by_table AS pst
  LEFT JOIN x$ps_schema_table_statistics_io AS fsbi
    ON pst.object_schema = fsbi.table_schema
   AND pst.object_name = fsbi.table_name
 ORDER BY pst.sum_timer_wait DESC;

--
-- View: schema_table_statistics_with_buffer
--
-- Statistics around tables.
--
-- Ordered by the total wait time descending - top tables are most contended.
--
-- More statistics such as caching stats for the InnoDB buffer pool with InnoDB tables
--
-- mysql> select * from schema_table_statistics_with_buffer limit 1\G
-- *************************** 1. row ***************************
--                  table_schema: mem
--                    table_name: mysqlserver
--                  rows_fetched: 27087
--                 fetch_latency: 442.72 ms
--                 rows_inserted: 2
--                insert_latency: 185.04 us 
--                  rows_updated: 5096
--                update_latency: 1.39 s
--                  rows_deleted: 0
--                delete_latency: 0 ps
--              io_read_requests: 2565
--                 io_read_bytes: 1121627
--               io_read_latency: 10.07 ms
--             io_write_requests: 1691
--                io_write_bytes: 128383
--              io_write_latency: 14.17 ms
--              io_misc_requests: 2698
--               io_misc_latency: 433.66 ms
--           innodb_buffer_pages: 19
--    innodb_buffer_pages_hashed: 19
--       innodb_buffer_pages_old: 19
-- innodb_buffer_bytes_allocated: 311296
--      innodb_buffer_bytes_data: 1924
--     innodb_buffer_rows_cached: 2
--

DELIMITER $$
BEGIN NOT ATOMIC
DECLARE EXIT HANDLER FOR SQLEXCEPTION BEGIN END;
CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW schema_table_statistics_with_buffer (
  table_schema,
  table_name,
  rows_fetched,
  fetch_latency,
  rows_inserted,
  insert_latency,
  rows_updated,
  update_latency,
  rows_deleted,
  delete_latency,
  io_read_requests,
  io_read,
  io_read_latency,
  io_write_requests,
  io_write,
  io_write_latency,
  io_misc_requests,
  io_misc_latency,
  innodb_buffer_allocated,
  innodb_buffer_data,
  innodb_buffer_free,
  innodb_buffer_pages,
  innodb_buffer_pages_hashed,
  innodb_buffer_pages_old,
  innodb_buffer_rows_cached
) AS
SELECT pst.object_schema AS table_schema,
       pst.object_name AS table_name,
       pst.count_fetch AS rows_fetched,
       sys.format_time(pst.sum_timer_fetch) AS fetch_latency,
       pst.count_insert AS rows_inserted,
       sys.format_time(pst.sum_timer_insert) AS insert_latency,
       pst.count_update AS rows_updated,
       sys.format_time(pst.sum_timer_update) AS update_latency,
       pst.count_delete AS rows_deleted,
       sys.format_time(pst.sum_timer_delete) AS delete_latency,
       fsbi.count_read AS io_read_requests,
       sys.format_bytes(fsbi.sum_number_of_bytes_read) AS io_read,
       sys.format_time(fsbi.sum_timer_read) AS io_read_latency,
       fsbi.count_write AS io_write_requests,
       sys.format_bytes(fsbi.sum_number_of_bytes_write) AS io_write,
       sys.format_time(fsbi.sum_timer_write) AS io_write_latency,
       fsbi.count_misc AS io_misc_requests,
       sys.format_time(fsbi.sum_timer_misc) AS io_misc_latency,
       sys.format_bytes(ibp.allocated) AS innodb_buffer_allocated,
       sys.format_bytes(ibp.data) AS innodb_buffer_data,
       sys.format_bytes(ibp.allocated - ibp.data) AS innodb_buffer_free,
       ibp.pages AS innodb_buffer_pages,
       ibp.pages_hashed AS innodb_buffer_pages_hashed,
       ibp.pages_old AS innodb_buffer_pages_old,
       ibp.rows_cached AS innodb_buffer_rows_cached
  FROM performance_schema.table_io_waits_summary_by_table AS pst
  LEFT JOIN x$ps_schema_table_statistics_io AS fsbi
    ON pst.object_schema = fsbi.table_schema
   AND pst.object_name = fsbi.table_name
  LEFT JOIN sys.x$innodb_buffer_stats_by_table AS ibp
    ON pst.object_schema = ibp.object_schema
   AND pst.object_name = ibp.object_name
 ORDER BY pst.sum_timer_wait DESC;

END$$
DELIMITER ;

--
-- View: x$schema_table_statistics_with_buffer
--
-- Statistics around tables.
--
-- Ordered by the total wait time descending - top tables are most contended.
--
-- More statistics such as caching stats for the InnoDB buffer pool with InnoDB tables
--
-- mysql> SELECT * FROM x$schema_table_statistics_with_buffer LIMIT 1\G
-- *************************** 1. row ***************************
--               table_schema: common_schema
--                 table_name: help_content
--               rows_fetched: 0
--              fetch_latency: 0
--              rows_inserted: 169
--             insert_latency: 409815527680
--               rows_updated: 0
--             update_latency: 0
--               rows_deleted: 0
--             delete_latency: 0
--           io_read_requests: 14
--                    io_read: 1180
--            io_read_latency: 52406770
--          io_write_requests: 131
--                   io_write: 11719246
--           io_write_latency: 133726902790
--           io_misc_requests: 61
--            io_misc_latency: 209081089750
--    innodb_buffer_allocated: 688128
--         innodb_buffer_data: 423667
--        innodb_buffer_pages: 42
-- innodb_buffer_pages_hashed: 42
--    innodb_buffer_pages_old: 42
--  innodb_buffer_rows_cached: 210
--

DELIMITER $$
BEGIN NOT ATOMIC
DECLARE EXIT HANDLER FOR SQLEXCEPTION BEGIN END;

CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$schema_table_statistics_with_buffer (
  table_schema,
  table_name,
  rows_fetched,
  fetch_latency,
  rows_inserted,
  insert_latency,
  rows_updated,
  update_latency,
  rows_deleted,
  delete_latency,
  io_read_requests,
  io_read,
  io_read_latency,
  io_write_requests,
  io_write,
  io_write_latency,
  io_misc_requests,
  io_misc_latency,
  innodb_buffer_allocated,
  innodb_buffer_data,
  innodb_buffer_free,
  innodb_buffer_pages,
  innodb_buffer_pages_hashed,
  innodb_buffer_pages_old,
  innodb_buffer_rows_cached
) AS
SELECT pst.object_schema AS table_schema,
       pst.object_name AS table_name,
       pst.count_fetch AS rows_fetched,
       pst.sum_timer_fetch AS fetch_latency,
       pst.count_insert AS rows_inserted,
       pst.sum_timer_insert AS insert_latency,
       pst.count_update AS rows_updated,
       pst.sum_timer_update AS update_latency,
       pst.count_delete AS rows_deleted,
       pst.sum_timer_delete AS delete_latency,
       fsbi.count_read AS io_read_requests,
       fsbi.sum_number_of_bytes_read AS io_read,
       fsbi.sum_timer_read AS io_read_latency,
       fsbi.count_write AS io_write_requests,
       fsbi.sum_number_of_bytes_write AS io_write,
       fsbi.sum_timer_write AS io_write_latency,
       fsbi.count_misc AS io_misc_requests,
       fsbi.sum_timer_misc AS io_misc_latency,
       ibp.allocated AS innodb_buffer_allocated,
       ibp.data AS innodb_buffer_data,
       (ibp.allocated - ibp.data) AS innodb_buffer_free,
       ibp.pages AS innodb_buffer_pages,
       ibp.pages_hashed AS innodb_buffer_pages_hashed,
       ibp.pages_old AS innodb_buffer_pages_old,
       ibp.rows_cached AS innodb_buffer_rows_cached
  FROM performance_schema.table_io_waits_summary_by_table AS pst
  LEFT JOIN x$ps_schema_table_statistics_io AS fsbi
    ON pst.object_schema = fsbi.table_schema
   AND pst.object_name = fsbi.table_name
  LEFT JOIN sys.x$innodb_buffer_stats_by_table AS ibp
    ON pst.object_schema = ibp.object_schema
   AND pst.object_name = ibp.object_name
 ORDER BY pst.sum_timer_wait DESC;
END$$
DELIMITER ;

--
-- View: schema_tables_with_full_table_scans
--
-- Find tables that are being accessed by full table scans
-- ordering by the number of rows scanned descending.
--
-- mysql> select * from schema_tables_with_full_table_scans limit 5;
-- +--------------------+--------------------------------+-------------------+-----------+
-- | object_schema      | object_name                    | rows_full_scanned | latency   |
-- +--------------------+--------------------------------+-------------------+-----------+
-- | mem30__instruments | fsstatistics                   |          10207042 | 13.10 s   |
-- | mem30__instruments | preparedstatementapidata       |            436428 | 973.27 ms |
-- | mem30__instruments | mysqlprocessactivity           |            411702 | 282.07 ms |
-- | mem30__instruments | querycachequeriesincachedata   |            374011 | 767.15 ms |
-- | mem30__instruments | rowaccessesdata                |            322321 | 1.55 s    |
-- +--------------------+--------------------------------+-------------------+-----------+
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW schema_tables_with_full_table_scans (
  object_schema,
  object_name,
  rows_full_scanned,
  latency
) AS
SELECT object_schema, 
       object_name,
       count_read AS rows_full_scanned,
       sys.format_time(sum_timer_wait) AS latency
  FROM performance_schema.table_io_waits_summary_by_index_usage 
 WHERE index_name IS NULL
   AND count_read > 0
 ORDER BY count_read DESC;

--
-- View: x$schema_tables_with_full_table_scans
--
-- Find tables that are being accessed by full table scans
-- ordering by the number of rows scanned descending.
--
-- mysql> select * from x$schema_tables_with_full_table_scans limit 5;
-- +--------------------+------------------------------+-------------------+----------------+
-- | object_schema      | object_name                  | rows_full_scanned | latency        |
-- +--------------------+------------------------------+-------------------+----------------+
-- | mem30__instruments | fsstatistics                 |          10207042 | 13098927688488 |
-- | mem30__instruments | preparedstatementapidata     |            436428 |   973274338980 |
-- | mem30__instruments | mysqlprocessactivity         |            411702 |   282072434940 |
-- | mem30__instruments | querycachequeriesincachedata |            374011 |   767152380564 |
-- | mem30__instruments | rowaccessesdata              |            322321 |  1547594778456 |
-- +--------------------+------------------------------+-------------------+----------------+
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$schema_tables_with_full_table_scans (
  object_schema,
  object_name,
  rows_full_scanned,
  latency
) AS
SELECT object_schema, 
       object_name,
       count_read AS rows_full_scanned,
       sum_timer_wait AS latency
  FROM performance_schema.table_io_waits_summary_by_index_usage 
 WHERE index_name IS NULL
   AND count_read > 0
 ORDER BY count_read DESC;

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW schema_unused_indexes (
  object_schema,
  object_name,
  index_name
) AS
SELECT object_schema,
       object_name,
       index_name
  FROM performance_schema.table_io_waits_summary_by_index_usage 
 WHERE index_name IS NOT NULL
   AND count_star = 0
   AND object_schema != 'mysql'
   AND index_name != 'PRIMARY'
 ORDER BY object_schema, object_name;

--
-- View: schema_table_lock_waits
--
-- Shows sessions that are blocked waiting on table metadata locks, and 
-- who is blocking them.
--
-- mysql> select * from sys.schema_table_lock_waits\G
-- *************************** 1. row ***************************
--                object_schema: test
--                  object_name: t
--            waiting_thread_id: 43
--                  waiting_pid: 21
--              waiting_account: msandbox@localhost
--            waiting_lock_type: SHARED_UPGRADABLE
--        waiting_lock_duration: TRANSACTION
--                waiting_query: alter table test.t add foo int
--           waiting_query_secs: 988
--  waiting_query_rows_affected: 0
--  waiting_query_rows_examined: 0
--           blocking_thread_id: 42
--                 blocking_pid: 20
--             blocking_account: msandbox@localhost
--           blocking_lock_type: SHARED_NO_READ_WRITE
--       blocking_lock_duration: TRANSACTION
--      sql_kill_blocking_query: KILL QUERY 20
-- sql_kill_blocking_connection: KILL 20
--

CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW schema_table_lock_waits (
  object_schema,
  object_name,
  waiting_thread_id,
  waiting_pid,
  waiting_account,
  waiting_lock_type,
  waiting_lock_duration,
  waiting_query,
  waiting_query_secs,
  waiting_query_rows_affected,
  waiting_query_rows_examined,
  blocking_thread_id,
  blocking_pid,
  blocking_account,
  blocking_lock_type,
  blocking_lock_duration,
  sql_kill_blocking_query,
  sql_kill_blocking_connection
) AS
SELECT g.object_schema AS object_schema,
       g.object_name AS object_name,
       pt.thread_id AS waiting_thread_id,
       pt.processlist_id AS waiting_pid,
       sys.ps_thread_account(p.owner_thread_id) AS waiting_account,
       p.lock_type AS waiting_lock_type,
       p.lock_duration AS waiting_lock_duration,
       sys.format_statement(pt.processlist_info) AS waiting_query,
       pt.processlist_time AS waiting_query_secs,
       ps.rows_affected AS waiting_query_rows_affected,
       ps.rows_examined AS waiting_query_rows_examined,
       gt.thread_id AS blocking_thread_id,
       gt.processlist_id AS blocking_pid,
       sys.ps_thread_account(g.owner_thread_id) AS blocking_account,
       g.lock_type AS blocking_lock_type,
       g.lock_duration AS blocking_lock_duration,
       CONCAT('KILL QUERY ', gt.processlist_id) AS sql_kill_blocking_query,
       CONCAT('KILL ', gt.processlist_id) AS sql_kill_blocking_connection
  FROM performance_schema.metadata_locks g
 INNER JOIN performance_schema.metadata_locks p 
    ON g.object_type = p.object_type
   AND g.object_schema = p.object_schema
   AND g.object_name = p.object_name
   AND g.lock_status = 'GRANTED'
   AND p.lock_status = 'PENDING'
 INNER JOIN performance_schema.threads gt ON g.owner_thread_id = gt.thread_id
 INNER JOIN performance_schema.threads pt ON p.owner_thread_id = pt.thread_id
  LEFT JOIN performance_schema.events_statements_current gs ON g.owner_thread_id = gs.thread_id
  LEFT JOIN performance_schema.events_statements_current ps ON p.owner_thread_id = ps.thread_id
 WHERE g.object_type = 'TABLE';

--
-- View: schema_table_lock_waits
--
-- Shows sessions that are blocked waiting on table metadata locks, and 
-- who is blocking them.
--
-- mysql> select * from sys.x$schema_table_lock_waits\G
-- *************************** 1. row ***************************
--                object_schema: test
--                  object_name: t
--            waiting_thread_id: 43
--                  waiting_pid: 21
--              waiting_account: msandbox@localhost
--            waiting_lock_type: SHARED_UPGRADABLE
--        waiting_lock_duration: TRANSACTION
--                waiting_query: alter table test.t add foo int
--           waiting_query_secs: 990
--  waiting_query_rows_affected: 0
--  waiting_query_rows_examined: 0
--           blocking_thread_id: 42
--                 blocking_pid: 20
--             blocking_account: msandbox@localhost
--           blocking_lock_type: SHARED_NO_READ_WRITE
--       blocking_lock_duration: TRANSACTION
--      sql_kill_blocking_query: KILL QUERY 20
-- sql_kill_blocking_connection: KILL 20
--

CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$schema_table_lock_waits (
  object_schema,
  object_name,
  waiting_thread_id,
  waiting_pid,
  waiting_account,
  waiting_lock_type,
  waiting_lock_duration,
  waiting_query,
  waiting_query_secs,
  waiting_query_rows_affected,
  waiting_query_rows_examined,
  blocking_thread_id,
  blocking_pid,
  blocking_account,
  blocking_lock_type,
  blocking_lock_duration,
  sql_kill_blocking_query,
  sql_kill_blocking_connection
) AS
SELECT g.object_schema AS object_schema,
       g.object_name AS object_name,
       pt.thread_id AS waiting_thread_id,
       pt.processlist_id AS waiting_pid,
       sys.ps_thread_account(p.owner_thread_id) AS waiting_account,
       p.lock_type AS waiting_lock_type,
       p.lock_duration AS waiting_lock_duration,
       pt.processlist_info AS waiting_query,
       pt.processlist_time AS waiting_query_secs,
       ps.rows_affected AS waiting_query_rows_affected,
       ps.rows_examined AS waiting_query_rows_examined,
       gt.thread_id AS blocking_thread_id,
       gt.processlist_id AS blocking_pid,
       sys.ps_thread_account(g.owner_thread_id) AS blocking_account,
       g.lock_type AS blocking_lock_type,
       g.lock_duration AS blocking_lock_duration,
       CONCAT('KILL QUERY ', gt.processlist_id) AS sql_kill_blocking_query,
       CONCAT('KILL ', gt.processlist_id) AS sql_kill_blocking_connection
  FROM performance_schema.metadata_locks g
 INNER JOIN performance_schema.metadata_locks p 
    ON g.object_type = p.object_type
   AND g.object_schema = p.object_schema
   AND g.object_name = p.object_name
   AND g.lock_status = 'GRANTED'
   AND p.lock_status = 'PENDING'
 INNER JOIN performance_schema.threads gt ON g.owner_thread_id = gt.thread_id
 INNER JOIN performance_schema.threads pt ON p.owner_thread_id = pt.thread_id
  LEFT JOIN performance_schema.events_statements_current gs ON g.owner_thread_id = gs.thread_id
  LEFT JOIN performance_schema.events_statements_current ps ON p.owner_thread_id = ps.thread_id
 WHERE g.object_type = 'TABLE';

--
-- View: statement_analysis
--
-- Lists a normalized statement view with aggregated statistics,
-- mimics the MySQL Enterprise Monitor Query Analysis view,
-- ordered by the total execution time per normalized statement
-- 
-- mysql> select- * from statement_analysis limit 1\G
-- *************************** 1. row--**************************
--             query: SELECT * FROM `schema_object_o ... MA` , `information_schema` ...
--                db: sys
--         full_scan: *
--        exec_count: 2
--         err_count: 0
--        warn_count: 0
--     total_latency: 16.75 s
--       max_latency: 16.57 s
--       avg_latency: 8.38 s
--      lock_latency: 16.69 s
--         rows_sent: 84
--     rows_sent_avg: 42
--     rows_examined: 20012
--     rows_affected: 0
-- rows_affected_avg: 0
-- rows_examined_avg: 10006
--        tmp_tables: 378
--   tmp_disk_tables: 66
--       rows_sorted: 168
-- sort_merge_passes: 0
--            digest: 54f9bd520f0bbf15db0c2ed93386bec9
--        first_seen: 2014-03-07 13:13:41
--         last_seen: 2014-03-07 13:13:48
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW statement_analysis (
  query,
  db,
  full_scan,
  exec_count,
  err_count,
  warn_count,
  total_latency,
  max_latency,
  avg_latency,
  lock_latency,
  rows_sent,
  rows_sent_avg,
  rows_examined,
  rows_examined_avg,
  rows_affected,
  rows_affected_avg,
  tmp_tables,
  tmp_disk_tables,
  rows_sorted,
  sort_merge_passes,
  digest,
  first_seen,
  last_seen
) AS
SELECT sys.format_statement(DIGEST_TEXT) AS query,
       SCHEMA_NAME AS db,
       IF(SUM_NO_GOOD_INDEX_USED > 0 OR SUM_NO_INDEX_USED > 0, '*', '') AS full_scan,
       COUNT_STAR AS exec_count,
       SUM_ERRORS AS err_count,
       SUM_WARNINGS AS warn_count,
       sys.format_time(SUM_TIMER_WAIT) AS total_latency,
       sys.format_time(MAX_TIMER_WAIT) AS max_latency,
       sys.format_time(AVG_TIMER_WAIT) AS avg_latency,
       sys.format_time(SUM_LOCK_TIME) AS lock_latency,
       SUM_ROWS_SENT AS rows_sent,
       ROUND(IFNULL(SUM_ROWS_SENT / NULLIF(COUNT_STAR, 0), 0)) AS rows_sent_avg,
       SUM_ROWS_EXAMINED AS rows_examined,
       ROUND(IFNULL(SUM_ROWS_EXAMINED / NULLIF(COUNT_STAR, 0), 0))  AS rows_examined_avg,
       SUM_ROWS_AFFECTED AS rows_affected,
       ROUND(IFNULL(SUM_ROWS_AFFECTED / NULLIF(COUNT_STAR, 0), 0))  AS rows_affected_avg,
       SUM_CREATED_TMP_TABLES AS tmp_tables,
       SUM_CREATED_TMP_DISK_TABLES AS tmp_disk_tables,
       SUM_SORT_ROWS AS rows_sorted,
       SUM_SORT_MERGE_PASSES AS sort_merge_passes,
       DIGEST AS digest,
       FIRST_SEEN AS first_seen,
       LAST_SEEN as last_seen
  FROM performance_schema.events_statements_summary_by_digest
ORDER BY SUM_TIMER_WAIT DESC;

--
-- View: x$statement_analysis
--
-- Lists a normalized statement view with aggregated statistics,
-- mimics the MySQL Enterprise Monitor Query Analysis view,
-- ordered by the total execution time per normalized statement
-- 
-- mysql> select * from x$statement_analysis limit 1\G
-- *************************** 1. row ***************************
--             query: SELECT * FROM `schema_object_overview` SELECT `information_schema` . `routines`  -- truncated
--                db: sys
--         full_scan: *
--        exec_count: 2
--         err_count: 0
--        warn_count: 0
--     total_latency: 16751388791000
--       max_latency: 16566171163000
--       avg_latency: 8375694395000
--      lock_latency: 16686483000000
--         rows_sent: 84
--     rows_sent_avg: 42
--     rows_examined: 20012
-- rows_examined_avg: 10006
--     rows_affected: 0
-- rows_affected_avg: 0
--        tmp_tables: 378
--   tmp_disk_tables: 66
--       rows_sorted: 168
-- sort_merge_passes: 0
--            digest: 54f9bd520f0bbf15db0c2ed93386bec9
--        first_seen: 2014-03-07 13:13:41
--         last_seen: 2014-03-07 13:13:48
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$statement_analysis (
  query,
  db,
  full_scan,
  exec_count,
  err_count,
  warn_count,
  total_latency,
  max_latency,
  avg_latency,
  lock_latency,
  rows_sent,
  rows_sent_avg,
  rows_examined,
  rows_examined_avg,
  rows_affected,
  rows_affected_avg,
  tmp_tables,
  tmp_disk_tables,
  rows_sorted,
  sort_merge_passes,
  digest,
  first_seen,
  last_seen
) AS
SELECT DIGEST_TEXT AS query,
       SCHEMA_NAME AS db,
       IF(SUM_NO_GOOD_INDEX_USED > 0 OR SUM_NO_INDEX_USED > 0, '*', '') AS full_scan,
       COUNT_STAR AS exec_count,
       SUM_ERRORS AS err_count,
       SUM_WARNINGS AS warn_count,
       SUM_TIMER_WAIT AS total_latency,
       MAX_TIMER_WAIT AS max_latency,
       AVG_TIMER_WAIT AS avg_latency,
       SUM_LOCK_TIME AS lock_latency,
       SUM_ROWS_SENT AS rows_sent,
       ROUND(IFNULL(SUM_ROWS_SENT / NULLIF(COUNT_STAR, 0), 0)) AS rows_sent_avg,
       SUM_ROWS_EXAMINED AS rows_examined,
       ROUND(IFNULL(SUM_ROWS_EXAMINED / NULLIF(COUNT_STAR, 0), 0))  AS rows_examined_avg,
       SUM_ROWS_AFFECTED AS rows_affected,
       ROUND(IFNULL(SUM_ROWS_AFFECTED / NULLIF(COUNT_STAR, 0), 0))  AS rows_affected_avg,
       SUM_CREATED_TMP_TABLES AS tmp_tables,
       SUM_CREATED_TMP_DISK_TABLES AS tmp_disk_tables,
       SUM_SORT_ROWS AS rows_sorted,
       SUM_SORT_MERGE_PASSES AS sort_merge_passes,
       DIGEST AS digest,
       FIRST_SEEN AS first_seen,
       LAST_SEEN as last_seen
  FROM performance_schema.events_statements_summary_by_digest
ORDER BY SUM_TIMER_WAIT DESC;

--
-- View: statements_with_errors_or_warnings
--
-- Lists all normalized statements that have raised errors or warnings.
--
-- mysql> select * from statements_with_errors_or_warnings LIMIT 1\G
-- *************************** 1. row ***************************
--       query: CREATE OR REPLACE ALGORITHM =  ... _delete` AS `rows_deleted` ...
--          db: sys
--  exec_count: 2
--      errors: 1
--   error_pct: 50.0000
--    warnings: 0
-- warning_pct: 0.0000
--  first_seen: 2014-03-07 12:56:54
--   last_seen: 2014-03-07 13:01:01
--      digest: 943a788859e623d5f7798ba0ae0fd8a9
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW statements_with_errors_or_warnings (
  query,
  db,
  exec_count,
  errors,
  error_pct,
  warnings,
  warning_pct,
  first_seen,
  last_seen,
  digest
) AS
SELECT sys.format_statement(DIGEST_TEXT) AS query,
       SCHEMA_NAME as db,
       COUNT_STAR AS exec_count,
       SUM_ERRORS AS errors,
       IFNULL(SUM_ERRORS / NULLIF(COUNT_STAR, 0), 0) * 100 as error_pct,
       SUM_WARNINGS AS warnings,
       IFNULL(SUM_WARNINGS / NULLIF(COUNT_STAR, 0), 0) * 100 as warning_pct,
       FIRST_SEEN as first_seen,
       LAST_SEEN as last_seen,
       DIGEST AS digest
  FROM performance_schema.events_statements_summary_by_digest
 WHERE SUM_ERRORS > 0
    OR SUM_WARNINGS > 0
ORDER BY SUM_ERRORS DESC, SUM_WARNINGS DESC;

--
-- View: x$statements_with_errors_or_warnings
--
-- Lists all normalized statements that have raised errors or warnings.
--
-- mysql> select * from x$statements_with_errors_or_warnings LIMIT 1\G
-- *************************** 1. row ***************************
--       query: CREATE OR REPLACE ALGORITHM = TEMPTABLE DEFINER = ? @ ? SQL SECURITY INVOKER VIEW ... truncated
--          db: sys
--  exec_count: 2
--      errors: 1
--   error_pct: 50.0000
--    warnings: 0
-- warning_pct: 0.0000
--  first_seen: 2014-03-07 12:56:54
--   last_seen: 2014-03-07 13:01:01
--      digest: 943a788859e623d5f7798ba0ae0fd8a9
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$statements_with_errors_or_warnings (
  query,
  db,
  exec_count,
  errors,
  error_pct,
  warnings,
  warning_pct,
  first_seen,
  last_seen,
  digest
) AS
SELECT DIGEST_TEXT AS query,
       SCHEMA_NAME as db,
       COUNT_STAR AS exec_count,
       SUM_ERRORS AS errors,
       IFNULL(SUM_ERRORS / NULLIF(COUNT_STAR, 0), 0) * 100 as error_pct,
       SUM_WARNINGS AS warnings,
       IFNULL(SUM_WARNINGS / NULLIF(COUNT_STAR, 0), 0) * 100 as warning_pct,
       FIRST_SEEN as first_seen,
       LAST_SEEN as last_seen,
       DIGEST AS digest
  FROM performance_schema.events_statements_summary_by_digest
 WHERE SUM_ERRORS > 0
    OR SUM_WARNINGS > 0
ORDER BY SUM_ERRORS DESC, SUM_WARNINGS DESC;

--
-- View: statements_with_full_table_scans
--
-- Lists all normalized statements that use have done a full table scan
-- ordered by number the percentage of times a full scan was done,
-- then by the statement latency.
--
-- This view ignores SHOW statements, as these always cause a full table scan,
-- and there is nothing that can be done about this.
--
-- mysql> select * from statements_with_full_table_scans limit 1\G
-- *************************** 1. row ***************************
--                    query: SELECT * FROM `schema_tables_w ... ex_usage` . `COUNT_READ` DESC
--                       db: sys
--               exec_count: 1
--            total_latency: 88.20 ms
--      no_index_used_count: 1
-- no_good_index_used_count: 0
--        no_index_used_pct: 100
--                rows_sent: 0
--            rows_examined: 1501
--            rows_sent_avg: 0
--        rows_examined_avg: 1501
--               first_seen: 2014-03-07 13:58:20
--                last_seen: 2014-03-07 13:58:20
--                   digest: 64baecd5c1e1e1651a6b92e55442a288
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW statements_with_full_table_scans (
  query,
  db,
  exec_count,
  total_latency,
  no_index_used_count,
  no_good_index_used_count,
  no_index_used_pct,
  rows_sent,
  rows_examined,
  rows_sent_avg,
  rows_examined_avg,
  first_seen,
  last_seen,
  digest
) AS
SELECT sys.format_statement(DIGEST_TEXT) AS query,
       SCHEMA_NAME as db,
       COUNT_STAR AS exec_count,
       sys.format_time(SUM_TIMER_WAIT) AS total_latency,
       SUM_NO_INDEX_USED AS no_index_used_count,
       SUM_NO_GOOD_INDEX_USED AS no_good_index_used_count,
       ROUND(IFNULL(SUM_NO_INDEX_USED / NULLIF(COUNT_STAR, 0), 0) * 100) AS no_index_used_pct,
       SUM_ROWS_SENT AS rows_sent,
       SUM_ROWS_EXAMINED AS rows_examined,
       ROUND(SUM_ROWS_SENT/COUNT_STAR) AS rows_sent_avg,
       ROUND(SUM_ROWS_EXAMINED/COUNT_STAR) AS rows_examined_avg,
       FIRST_SEEN as first_seen,
       LAST_SEEN as last_seen,
       DIGEST AS digest
  FROM performance_schema.events_statements_summary_by_digest
 WHERE (SUM_NO_INDEX_USED > 0
    OR SUM_NO_GOOD_INDEX_USED > 0)
   AND DIGEST_TEXT NOT LIKE 'SHOW%'
 ORDER BY no_index_used_pct DESC, total_latency DESC;

--
-- View: x$statements_with_full_table_scans
--
-- Lists all normalized statements that use have done a full table scan
-- ordered by number the percentage of times a full scan was done,
-- then by the statement latency.
--
-- This view ignores SHOW statements, as these always cause a full table scan,
-- and there is nothing that can be done about this.
--
-- mysql> select * from x$statements_with_full_table_scans limit 1\G
-- *************************** 1. row ***************************
--                    query: SELECT * FROM `schema_object_overview` SELECT `information_schema` . `routines` . `ROUTINE_SCHEMA` // truncated
--                       db: sys
--               exec_count: 2
--            total_latency: 16751388791000
--      no_index_used_count: 2
-- no_good_index_used_count: 0
--        no_index_used_pct: 100
--                rows_sent: 84
--            rows_examined: 20012
--            rows_sent_avg: 42
--        rows_examined_avg: 10006
--               first_seen: 2014-03-07 13:13:41
--                last_seen: 2014-03-07 13:13:48
--                   digest: 54f9bd520f0bbf15db0c2ed93386bec9
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$statements_with_full_table_scans (
  query,
  db,
  exec_count,
  total_latency,
  no_index_used_count,
  no_good_index_used_count,
  no_index_used_pct,
  rows_sent,
  rows_examined,
  rows_sent_avg,
  rows_examined_avg,
  first_seen,
  last_seen,
  digest
) AS
SELECT DIGEST_TEXT AS query,
       SCHEMA_NAME as db,
       COUNT_STAR AS exec_count,
       SUM_TIMER_WAIT AS total_latency,
       SUM_NO_INDEX_USED AS no_index_used_count,
       SUM_NO_GOOD_INDEX_USED AS no_good_index_used_count,
       ROUND(IFNULL(SUM_NO_INDEX_USED / NULLIF(COUNT_STAR, 0), 0) * 100) AS no_index_used_pct,
       SUM_ROWS_SENT AS rows_sent,
       SUM_ROWS_EXAMINED AS rows_examined,
       ROUND(SUM_ROWS_SENT/COUNT_STAR) AS rows_sent_avg,
       ROUND(SUM_ROWS_EXAMINED/COUNT_STAR) AS rows_examined_avg,
       FIRST_SEEN as first_seen,
       LAST_SEEN as last_seen,
       DIGEST AS digest
  FROM performance_schema.events_statements_summary_by_digest
 WHERE (SUM_NO_INDEX_USED > 0
    OR SUM_NO_GOOD_INDEX_USED > 0)
   AND DIGEST_TEXT NOT LIKE 'SHOW%'
 ORDER BY no_index_used_pct DESC, total_latency DESC;

--
-- View: x$ps_digest_avg_latency_distribution
--
-- Helper view for x$ps_digest_95th_percentile_by_avg_us
--

CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$ps_digest_avg_latency_distribution (
  cnt,
  avg_us
) AS
SELECT COUNT(*) cnt, 
       ROUND(avg_timer_wait/1000000) AS avg_us
  FROM performance_schema.events_statements_summary_by_digest
 GROUP BY avg_us;

--
-- View: x$ps_digest_95th_percentile_by_avg_us
--
-- Helper view for statements_with_runtimes_in_95th_percentile.
-- Lists the 95th percentile runtime, for all statements
--
-- mysql> select * from x$ps_digest_95th_percentile_by_avg_us;
-- +--------+------------+
-- | avg_us | percentile |
-- +--------+------------+
-- |    964 |     0.9525 |
-- +--------+------------+
--

CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$ps_digest_95th_percentile_by_avg_us (
  avg_us,
  percentile
) AS
SELECT s2.avg_us avg_us,
       IFNULL(SUM(s1.cnt)/NULLIF((SELECT COUNT(*) FROM performance_schema.events_statements_summary_by_digest), 0), 0) percentile
  FROM sys.x$ps_digest_avg_latency_distribution AS s1
  JOIN sys.x$ps_digest_avg_latency_distribution AS s2
    ON s1.avg_us <= s2.avg_us
 GROUP BY s2.avg_us
HAVING IFNULL(SUM(s1.cnt)/NULLIF((SELECT COUNT(*) FROM performance_schema.events_statements_summary_by_digest), 0), 0) > 0.95
 ORDER BY percentile
 LIMIT 1;

--
-- View: statements_with_runtimes_in_95th_percentile
--
-- List all statements whose average runtime, in microseconds, is in the top 95th percentile.
-- 
-- mysql> select * from statements_with_runtimes_in_95th_percentile limit 5;
-- +-------------------------------------------------------------------+------+-----------+------------+-----------+------------+---------------+-------------+-------------+-----------+---------------+---------------+-------------------+---------------------+---------------------+----------------------------------+
-- | query                                                             | db   | full_scan | exec_count | err_count | warn_count | total_latency | max_latency | avg_latency | rows_sent | rows_sent_avg | rows_examined | rows_examined_avg | FIRST_SEEN          | LAST_SEEN           | digest                           |
-- +-------------------------------------------------------------------+------+-----------+------------+-----------+------------+---------------+-------------+-------------+-----------+---------------+---------------+-------------------+---------------------+---------------------+----------------------------------+
-- | SELECT `e` . `round_robin_bin` ...  `timestamp` = `maxes` . `ts`  | mem  | *         |         14 |         0 |          0 | 43.96 s       | 6.69 s      | 3.14 s      |        11 |             1 |        253170 |             18084 | 2013-12-04 20:05:01 | 2013-12-04 20:06:34 | 29ba002bf039bb6439357a10134407de |
-- | SELECT `e` . `round_robin_bin` ...  `timestamp` = `maxes` . `ts`  | mem  | *         |          8 |         0 |          0 | 17.89 s       | 4.12 s      | 2.24 s      |         7 |             1 |        169534 |             21192 | 2013-12-04 20:04:54 | 2013-12-04 20:05:05 | 0b1c1f91e7e9e0ff91aa49d15f540793 |
-- | SELECT `e` . `round_robin_bin` ...  `timestamp` = `maxes` . `ts`  | mem  | *         |          1 |         0 |          0 | 2.22 s        | 2.22 s      | 2.22 s      |         1 |             1 |         40322 |             40322 | 2013-12-04 20:05:39 | 2013-12-04 20:05:39 | 07b27145c8f8a3779737df5032374833 |
-- | SELECT `e` . `round_robin_bin` ...  `timestamp` = `maxes` . `ts`  | mem  | *         |          1 |         0 |          0 | 1.97 s        | 1.97 s      | 1.97 s      |         1 |             1 |         40322 |             40322 | 2013-12-04 20:05:39 | 2013-12-04 20:05:39 | a07488137ea5c1bccf3e291c50bfd21f |
-- | SELECT `e` . `round_robin_bin` ...  `timestamp` = `maxes` . `ts`  | mem  | *         |          2 |         0 |          0 | 3.91 s        | 3.91 s      | 1.96 s      |         1 |             1 |         13126 |              6563 | 2013-12-04 20:05:04 | 2013-12-04 20:06:34 | b8bddc6566366dafc7e474f67096a93b |
-- +-------------------------------------------------------------------+------+-----------+------------+-----------+------------+---------------+-------------+-------------+-----------+---------------+---------------+-------------------+---------------------+---------------------+----------------------------------+
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW statements_with_runtimes_in_95th_percentile (
  query,
  db,
  full_scan,
  exec_count,
  err_count,
  warn_count,
  total_latency,
  max_latency,
  avg_latency,
  rows_sent,
  rows_sent_avg,
  rows_examined,
  rows_examined_avg,
  first_seen,
  last_seen,
  digest
) AS
SELECT sys.format_statement(DIGEST_TEXT) AS query,
       SCHEMA_NAME as db,
       IF(SUM_NO_GOOD_INDEX_USED > 0 OR SUM_NO_INDEX_USED > 0, '*', '') AS full_scan,
       COUNT_STAR AS exec_count,
       SUM_ERRORS AS err_count,
       SUM_WARNINGS AS warn_count,
       sys.format_time(SUM_TIMER_WAIT) AS total_latency,
       sys.format_time(MAX_TIMER_WAIT) AS max_latency,
       sys.format_time(AVG_TIMER_WAIT) AS avg_latency,
       SUM_ROWS_SENT AS rows_sent,
       ROUND(IFNULL(SUM_ROWS_SENT / NULLIF(COUNT_STAR, 0), 0)) AS rows_sent_avg,
       SUM_ROWS_EXAMINED AS rows_examined,
       ROUND(IFNULL(SUM_ROWS_EXAMINED / NULLIF(COUNT_STAR, 0), 0)) AS rows_examined_avg,
       FIRST_SEEN AS first_seen,
       LAST_SEEN AS last_seen,
       DIGEST AS digest
  FROM performance_schema.events_statements_summary_by_digest stmts
  JOIN sys.x$ps_digest_95th_percentile_by_avg_us AS top_percentile
    ON ROUND(stmts.avg_timer_wait/1000000) >= top_percentile.avg_us
 ORDER BY AVG_TIMER_WAIT DESC;

--
-- View: x$statements_with_runtimes_in_95th_percentile
--
-- List all statements whose average runtime, in microseconds, is in the top 95th percentile.
-- 
-- mysql> SELECT * FROM x$statements_with_runtimes_in_95th_percentile LIMIT 1\G
-- *************************** 1. row ***************************
--             query: SELECT `e` . `round_robin_bin` AS `round1_1706_0_` , `e` . `id` AS `id1706_0_` , `e` . `timestamp` AS `timestamp1706_0_` , ... truncated
--                db: mem
--         full_scan: *
--        exec_count: 14
--         err_count: 0
--        warn_count: 0
--     total_latency: 43961670267000
--       max_latency: 6686877140000
--       avg_latency: 3140119304000
--         rows_sent: 11
--     rows_sent_avg: 1
--     rows_examined: 253170
-- rows_examined_avg: 18084
--        first_seen: 2013-12-04 20:05:01
--         last_seen: 2013-12-04 20:06:34
--            digest: 29ba002bf039bb6439357a10134407de
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$statements_with_runtimes_in_95th_percentile (
  query,
  db,
  full_scan,
  exec_count,
  err_count,
  warn_count,
  total_latency,
  max_latency,
  avg_latency,
  rows_sent,
  rows_sent_avg,
  rows_examined,
  rows_examined_avg,
  first_seen,
  last_seen,
  digest
) AS
SELECT DIGEST_TEXT AS query,
       SCHEMA_NAME AS db,
       IF(SUM_NO_GOOD_INDEX_USED > 0 OR SUM_NO_INDEX_USED > 0, '*', '') AS full_scan,
       COUNT_STAR AS exec_count,
       SUM_ERRORS AS err_count,
       SUM_WARNINGS AS warn_count,
       SUM_TIMER_WAIT AS total_latency,
       MAX_TIMER_WAIT AS max_latency,
       AVG_TIMER_WAIT AS avg_latency,
       SUM_ROWS_SENT AS rows_sent,
       ROUND(IFNULL(SUM_ROWS_SENT / NULLIF(COUNT_STAR, 0), 0)) AS rows_sent_avg,
       SUM_ROWS_EXAMINED AS rows_examined,
       ROUND(IFNULL(SUM_ROWS_EXAMINED / NULLIF(COUNT_STAR, 0), 0)) AS rows_examined_avg,
       FIRST_SEEN as first_seen,
       LAST_SEEN as last_seen,
       DIGEST AS digest
  FROM performance_schema.events_statements_summary_by_digest stmts
  JOIN sys.x$ps_digest_95th_percentile_by_avg_us AS top_percentile
    ON ROUND(stmts.avg_timer_wait/1000000) >= top_percentile.avg_us
 ORDER BY AVG_TIMER_WAIT DESC;

--
-- View: statements_with_sorting
--
-- Lists all normalized statements that have done sorts,
-- ordered by total_latency descending.
--
-- mysql> select * from statements_with_sorting limit 1\G
-- *************************** 1. row ***************************
--             query: SELECT * FROM `schema_object_o ... MA` , `information_schema` ...
--                db: sys
--        exec_count: 2
--     total_latency: 16.75 s
-- sort_merge_passes: 0
--   avg_sort_merges: 0
-- sorts_using_scans: 12
--  sort_using_range: 0
--       rows_sorted: 168
--   avg_rows_sorted: 84
--        first_seen: 2014-03-07 13:13:41
--         last_seen: 2014-03-07 13:13:48
--            digest: 54f9bd520f0bbf15db0c2ed93386bec9
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW statements_with_sorting (
  query,
  db,
  exec_count,
  total_latency,
  sort_merge_passes,
  avg_sort_merges,
  sorts_using_scans,
  sort_using_range,
  rows_sorted,
  avg_rows_sorted,
  first_seen,
  last_seen,
  digest
) AS
SELECT sys.format_statement(DIGEST_TEXT) AS query,
       SCHEMA_NAME db,
       COUNT_STAR AS exec_count,
       sys.format_time(SUM_TIMER_WAIT) AS total_latency,
       SUM_SORT_MERGE_PASSES AS sort_merge_passes,
       ROUND(IFNULL(SUM_SORT_MERGE_PASSES / NULLIF(COUNT_STAR, 0), 0)) AS avg_sort_merges,
       SUM_SORT_SCAN AS sorts_using_scans,
       SUM_SORT_RANGE AS sort_using_range,
       SUM_SORT_ROWS AS rows_sorted,
       ROUND(IFNULL(SUM_SORT_ROWS / NULLIF(COUNT_STAR, 0), 0)) AS avg_rows_sorted,
       FIRST_SEEN as first_seen,
       LAST_SEEN as last_seen,
       DIGEST AS digest
  FROM performance_schema.events_statements_summary_by_digest
 WHERE SUM_SORT_ROWS > 0
 ORDER BY SUM_TIMER_WAIT DESC;

--
-- View: x$statements_with_sorting
--
-- Lists all normalized statements that have done sorts,
-- ordered by total_latency descending.
--
-- mysql> select * from x$statements_with_sorting\G
-- *************************** 1. row ***************************
--             query: SELECT * FROM `schema_object_overview` SELECT `information_schema` . `routines` . `ROUTINE_SCHEMA` AS ... truncated
--                db: sys
--        exec_count: 2
--     total_latency: 16751388791000
-- sort_merge_passes: 0
--   avg_sort_merges: 0
-- sorts_using_scans: 12
--  sort_using_range: 0
--       rows_sorted: 168
--   avg_rows_sorted: 84
--        first_seen: 2014-03-07 13:13:41
--         last_seen: 2014-03-07 13:13:48
--            digest: 54f9bd520f0bbf15db0c2ed93386bec9
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$statements_with_sorting (
  query,
  db,
  exec_count,
  total_latency,
  sort_merge_passes,
  avg_sort_merges,
  sorts_using_scans,
  sort_using_range,
  rows_sorted,
  avg_rows_sorted,
  first_seen,
  last_seen,
  digest
) AS
SELECT DIGEST_TEXT AS query,
       SCHEMA_NAME db,
       COUNT_STAR AS exec_count,
       SUM_TIMER_WAIT AS total_latency,
       SUM_SORT_MERGE_PASSES AS sort_merge_passes,
       ROUND(IFNULL(SUM_SORT_MERGE_PASSES / NULLIF(COUNT_STAR, 0), 0)) AS avg_sort_merges,
       SUM_SORT_SCAN AS sorts_using_scans,
       SUM_SORT_RANGE AS sort_using_range,
       SUM_SORT_ROWS AS rows_sorted,
       ROUND(IFNULL(SUM_SORT_ROWS / NULLIF(COUNT_STAR, 0), 0)) AS avg_rows_sorted,
       FIRST_SEEN as first_seen,
       LAST_SEEN as last_seen,
       DIGEST AS digest
  FROM performance_schema.events_statements_summary_by_digest
 WHERE SUM_SORT_ROWS > 0
 ORDER BY SUM_TIMER_WAIT DESC;

--
-- View: statements_with_temp_tables
--
-- Lists all normalized statements that use temporary tables
-- ordered by number of on disk temporary tables descending first, 
-- then by the number of memory tables.
--
-- mysql> select * from statements_with_temp_tables limit 1\G
-- *************************** 1. row ***************************
--                    query: SELECT * FROM `schema_object_o ... MA` , `information_schema` ...
--                       db: sys
--               exec_count: 2
--            total_latency: 16.75 s
--        memory_tmp_tables: 378
--          disk_tmp_tables: 66
-- avg_tmp_tables_per_query: 189
--   tmp_tables_to_disk_pct: 17
--               first_seen: 2014-03-07 13:13:41
--                last_seen: 2014-03-07 13:13:48
--                   digest: 54f9bd520f0bbf15db0c2ed93386bec9
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW statements_with_temp_tables (
  query,
  db,
  exec_count,
  total_latency,
  memory_tmp_tables,
  disk_tmp_tables,
  avg_tmp_tables_per_query,
  tmp_tables_to_disk_pct,
  first_seen,
  last_seen,
  digest
) AS
SELECT sys.format_statement(DIGEST_TEXT) AS query,
       SCHEMA_NAME as db,
       COUNT_STAR AS exec_count,
       sys.format_time(SUM_TIMER_WAIT) as total_latency,
       SUM_CREATED_TMP_TABLES AS memory_tmp_tables,
       SUM_CREATED_TMP_DISK_TABLES AS disk_tmp_tables,
       ROUND(IFNULL(SUM_CREATED_TMP_TABLES / NULLIF(COUNT_STAR, 0), 0)) AS avg_tmp_tables_per_query,
       ROUND(IFNULL(SUM_CREATED_TMP_DISK_TABLES / NULLIF(SUM_CREATED_TMP_TABLES, 0), 0) * 100) AS tmp_tables_to_disk_pct,
       FIRST_SEEN as first_seen,
       LAST_SEEN as last_seen,
       DIGEST AS digest
  FROM performance_schema.events_statements_summary_by_digest
 WHERE SUM_CREATED_TMP_TABLES > 0
ORDER BY SUM_CREATED_TMP_DISK_TABLES DESC, SUM_CREATED_TMP_TABLES DESC;

--
-- View: x$statements_with_temp_tables
--
-- Lists all normalized statements that use temporary tables
-- ordered by number of on disk temporary tables descending first, 
-- then by the number of memory tables.
--
-- mysql> select * from x$statements_with_temp_tables limit 1\G
-- *************************** 1. row ***************************
--                    query: SELECT * FROM `schema_object_overview` SELECT `information_schema` . `routines` . `ROUTINE_SCHEMA` AS `db` , ... truncated
--                       db: sys
--               exec_count: 2
--            total_latency: 16751388791000
--        memory_tmp_tables: 378
--          disk_tmp_tables: 66
-- avg_tmp_tables_per_query: 189
--   tmp_tables_to_disk_pct: 17
--               first_seen: 2014-03-07 13:13:41
--                last_seen: 2014-03-07 13:13:48
--                   digest: 54f9bd520f0bbf15db0c2ed93386bec9
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$statements_with_temp_tables (
  query,
  db,
  exec_count,
  total_latency,
  memory_tmp_tables,
  disk_tmp_tables,
  avg_tmp_tables_per_query,
  tmp_tables_to_disk_pct,
  first_seen,
  last_seen,
  digest
) AS
SELECT DIGEST_TEXT AS query,
       SCHEMA_NAME as db,
       COUNT_STAR AS exec_count,
       SUM_TIMER_WAIT as total_latency,
       SUM_CREATED_TMP_TABLES AS memory_tmp_tables,
       SUM_CREATED_TMP_DISK_TABLES AS disk_tmp_tables,
       ROUND(IFNULL(SUM_CREATED_TMP_TABLES / NULLIF(COUNT_STAR, 0), 0)) AS avg_tmp_tables_per_query,
       ROUND(IFNULL(SUM_CREATED_TMP_DISK_TABLES / NULLIF(SUM_CREATED_TMP_TABLES, 0), 0) * 100) AS tmp_tables_to_disk_pct,
       FIRST_SEEN as first_seen,
       LAST_SEEN as last_seen,
       DIGEST AS digest
  FROM performance_schema.events_statements_summary_by_digest
 WHERE SUM_CREATED_TMP_TABLES > 0
ORDER BY SUM_CREATED_TMP_DISK_TABLES DESC, SUM_CREATED_TMP_TABLES DESC;

--
-- View: user_summary_by_file_io_type
--
-- Summarizes file IO by event type per user.
--
-- When the user found is NULL, it is assumed to be a "background" thread.
--
-- mysql> select * from user_summary_by_file_io_type;
-- +------------+--------------------------------------+-------+-----------+-------------+
-- | user       | event_name                           | total | latency   | max_latency |
-- +------------+--------------------------------------+-------+-----------+-------------+
-- | background | wait/io/file/sql/FRM                 |   871 | 168.15 ms | 18.48 ms    |
-- | background | wait/io/file/innodb/innodb_data_file |   173 | 129.56 ms | 34.09 ms    |
-- | background | wait/io/file/innodb/innodb_log_file  |    20 | 77.53 ms  | 60.66 ms    |
-- | background | wait/io/file/myisam/dfile            |    40 | 6.54 ms   | 4.58 ms     |
-- | background | wait/io/file/mysys/charset           |     3 | 4.79 ms   | 4.71 ms     |
-- | background | wait/io/file/myisam/kfile            |    67 | 4.38 ms   | 300.04 us   |
-- | background | wait/io/file/sql/ERRMSG              |     5 | 2.72 ms   | 1.69 ms     |
-- | background | wait/io/file/sql/pid                 |     3 | 266.30 us | 185.47 us   |
-- | background | wait/io/file/sql/casetest            |     5 | 246.81 us | 150.19 us   |
-- | background | wait/io/file/sql/global_ddl_log      |     2 | 21.24 us  | 18.59 us    |
-- | root       | wait/io/file/sql/file_parser         |  1422 | 4.80 s    | 135.14 ms   |
-- | root       | wait/io/file/sql/FRM                 |   865 | 85.82 ms  | 9.81 ms     |
-- | root       | wait/io/file/myisam/kfile            |  1073 | 37.14 ms  | 15.79 ms    |
-- | root       | wait/io/file/myisam/dfile            |  2991 | 25.53 ms  | 5.25 ms     |
-- | root       | wait/io/file/sql/dbopt               |    20 | 1.07 ms   | 153.07 us   |
-- | root       | wait/io/file/sql/misc                |     4 | 59.71 us  | 33.75 us    |
-- | root       | wait/io/file/archive/data            |     1 | 13.91 us  | 13.91 us    |
-- +------------+--------------------------------------+-------+-----------+-------------+
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW user_summary_by_file_io_type (
  user,
  event_name,
  total,
  latency,
  max_latency
) AS
SELECT IF(user IS NULL, 'background', user) AS user,
       event_name,
       count_star AS total,
       sys.format_time(sum_timer_wait) AS latency,
       sys.format_time(max_timer_wait) AS max_latency
  FROM performance_schema.events_waits_summary_by_user_by_event_name
 WHERE event_name LIKE 'wait/io/file%'
   AND count_star > 0
 ORDER BY user, sum_timer_wait DESC;

--
-- View: x$user_summary_by_file_io_type
--
-- Summarizes file IO by event type per user.
--
-- When the user found is NULL, it is assumed to be a "background" thread.
--
-- mysql> select * from x$user_summary_by_file_io_type;
-- +------------+--------------------------------------+-------+---------------+--------------+
-- | user       | event_name                           | total | latency       | max_latency  |
-- +------------+--------------------------------------+-------+---------------+--------------+
-- | background | wait/io/file/sql/FRM                 |   871 |  168148450470 |  18482624810 |
-- | background | wait/io/file/innodb/innodb_data_file |   173 |  129564287450 |  34087423890 |
-- | background | wait/io/file/innodb/innodb_log_file  |    20 |   77525706960 |  60657475320 |
-- | background | wait/io/file/myisam/dfile            |    40 |    6544493800 |   4580546230 |
-- | background | wait/io/file/mysys/charset           |     3 |    4793558770 |   4713476430 |
-- | background | wait/io/file/myisam/kfile            |    67 |    4384332810 |    300035450 |
-- | background | wait/io/file/sql/ERRMSG              |     5 |    2717434850 |   1687316280 |
-- | background | wait/io/file/sql/pid                 |     3 |     266301490 |    185468920 |
-- | background | wait/io/file/sql/casetest            |     5 |     246814360 |    150193030 |
-- | background | wait/io/file/sql/global_ddl_log      |     2 |      21236410 |     18593640 |
-- | root       | wait/io/file/sql/file_parser         |  1422 | 4801104756760 | 135138518970 |
-- | root       | wait/io/file/sql/FRM                 |   865 |   85818594810 |   9812303410 |
-- | root       | wait/io/file/myisam/kfile            |  1073 |   37143664870 |  15793838190 |
-- | root       | wait/io/file/myisam/dfile            |  2991 |   25528215700 |   5252232050 |
-- | root       | wait/io/file/sql/dbopt               |    20 |    1067339780 |    153073310 |
-- | root       | wait/io/file/sql/misc                |     4 |      59713030 |     33752810 |
-- | root       | wait/io/file/archive/data            |     1 |      13907530 |     13907530 |
-- +------------+--------------------------------------+-------+---------------+--------------+
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$user_summary_by_file_io_type (
  user,
  event_name,
  total,
  latency,
  max_latency
) AS
SELECT IF(user IS NULL, 'background', user) AS user,
       event_name,
       count_star AS total,
       sum_timer_wait AS latency,
       max_timer_wait AS max_latency
  FROM performance_schema.events_waits_summary_by_user_by_event_name
 WHERE event_name LIKE 'wait/io/file%'
   AND count_star > 0
 ORDER BY user, sum_timer_wait DESC;

--
-- View: user_summary_by_file_io
--
-- Summarizes file IO totals per user.
--
-- When the user found is NULL, it is assumed to be a "background" thread.
--
-- mysql> select * from user_summary_by_file_io;
-- +------------+-------+------------+
-- | user       | ios   | io_latency |
-- +------------+-------+------------+
-- | root       | 26457 | 21.58 s    |
-- | background |  1189 | 394.21 ms  |
-- +------------+-------+------------+
--

CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW user_summary_by_file_io (
  user,
  ios,
  io_latency
) AS
SELECT IF(user IS NULL, 'background', user) AS user,
       SUM(count_star) AS ios,
       sys.format_time(SUM(sum_timer_wait)) AS io_latency 
  FROM performance_schema.events_waits_summary_by_user_by_event_name
 WHERE event_name LIKE 'wait/io/file/%'
 GROUP BY IF(user IS NULL, 'background', user)
 ORDER BY SUM(sum_timer_wait) DESC;

--
-- View: x$user_summary_by_file_io
--
-- Summarizes file IO totals per user.
--
-- When the user found is NULL, it is assumed to be a "background" thread.
--
-- mysql> select * from x$user_summary_by_file_io;
-- +------------+-------+----------------+
-- | user       | ios   | io_latency     |
-- +------------+-------+----------------+
-- | root       | 26457 | 21579585586390 |
-- | background |  1189 |   394212617370 |
-- +------------+-------+----------------+
--

CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$user_summary_by_file_io (
  user,
  ios,
  io_latency
) AS
SELECT IF(user IS NULL, 'background', user) AS user,
       SUM(count_star) AS ios,
       SUM(sum_timer_wait) AS io_latency 
  FROM performance_schema.events_waits_summary_by_user_by_event_name
 WHERE event_name LIKE 'wait/io/file/%'
 GROUP BY IF(user IS NULL, 'background', user)
 ORDER BY SUM(sum_timer_wait) DESC;

--
-- View: user_summary_by_statement_type
--
-- Summarizes the types of statements executed by each user.
-- 
-- When the user found is NULL, it is assumed to be a "background" thread.
--
-- mysql> select * from user_summary_by_statement_type;
-- +------+----------------------+--------+---------------+-------------+--------------+-----------+---------------+---------------+------------+
-- | user | statement            | total  | total_latency | max_latency | lock_latency | rows_sent | rows_examined | rows_affected | full_scans |
-- +------+----------------------+--------+---------------+-------------+--------------+-----------+---------------+---------------+------------+
-- | root | create_view          |   2063 | 00:05:04.20   | 463.58 ms   | 1.42 s       |         0 |             0 |             0 |          0 |
-- | root | select               |    174 | 40.87 s       | 28.83 s     | 858.13 ms    |      5212 |        157022 |             0 |         82 |
-- | root | stmt                 |   6645 | 15.31 s       | 491.78 ms   | 0 ps         |         0 |             0 |          7951 |          0 |
-- | root | call_procedure       |     17 | 4.78 s        | 1.02 s      | 37.94 ms     |         0 |             0 |            19 |          0 |
-- | root | create_table         |     19 | 3.04 s        | 431.71 ms   | 0 ps         |         0 |             0 |             0 |          0 |
-- ...
-- +------+----------------------+--------+---------------+-------------+--------------+-----------+---------------+---------------+------------+
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW user_summary_by_statement_type (
  user,
  statement,
  total,
  total_latency,
  max_latency,
  lock_latency,
  rows_sent,
  rows_examined,
  rows_affected,
  full_scans
) AS
SELECT IF(user IS NULL, 'background', user) AS user,
       SUBSTRING_INDEX(event_name, '/', -1) AS statement,
       count_star AS total,
       sys.format_time(sum_timer_wait) AS total_latency,
       sys.format_time(max_timer_wait) AS max_latency,
       sys.format_time(sum_lock_time) AS lock_latency,
       sum_rows_sent AS rows_sent,
       sum_rows_examined AS rows_examined,
       sum_rows_affected AS rows_affected,
       sum_no_index_used + sum_no_good_index_used AS full_scans
  FROM performance_schema.events_statements_summary_by_user_by_event_name
 WHERE sum_timer_wait != 0
 ORDER BY user, sum_timer_wait DESC;

--
-- View: x$user_summary_by_statement_type
--
-- Summarizes the types of statements executed by each user.
-- 
-- When the user found is NULL, it is assumed to be a "background" thread.
--
-- mysql> select * from x$user_summary_by_statement_type;
-- +------+----------------------+--------+-----------------+----------------+----------------+-----------+---------------+---------------+------------+
-- | user | statement            | total  | total_latency   | max_latency    | lock_latency   | rows_sent | rows_examined | rows_affected | full_scans |
-- +------+----------------------+--------+-----------------+----------------+----------------+-----------+---------------+---------------+------------+
-- | root | create_view          |   2110 | 312717366332000 |   463578029000 |  1432355000000 |         0 |             0 |             0 |          0 |
-- | root | select               |    177 |  41115690428000 | 28827579292000 |   858709000000 |      5254 |        157437 |             0 |         83 |
-- | root | stmt                 |   6645 |  15305389969000 |   491780297000 |              0 |         0 |             0 |          7951 |          0 |
-- | root | call_procedure       |     17 |   4783806053000 |  1016083397000 |    37936000000 |         0 |             0 |            19 |          0 |
-- | root | create_table         |     19 |   3035120946000 |   431706815000 |              0 |         0 |             0 |             0 |          0 |
-- ...
-- +------+----------------------+--------+-----------------+----------------+----------------+-----------+---------------+---------------+------------+
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$user_summary_by_statement_type (
  user,
  statement,
  total,
  total_latency,
  max_latency,
  lock_latency,
  rows_sent,
  rows_examined,
  rows_affected,
  full_scans
) AS
SELECT IF(user IS NULL, 'background', user) AS user,
       SUBSTRING_INDEX(event_name, '/', -1) AS statement,
       count_star AS total,
       sum_timer_wait AS total_latency,
       max_timer_wait AS max_latency,
       sum_lock_time AS lock_latency,
       sum_rows_sent AS rows_sent,
       sum_rows_examined AS rows_examined,
       sum_rows_affected AS rows_affected,
       sum_no_index_used + sum_no_good_index_used AS full_scans
  FROM performance_schema.events_statements_summary_by_user_by_event_name
 WHERE sum_timer_wait != 0
 ORDER BY user, sum_timer_wait DESC;

--
-- View: user_summary_by_statement_latency
--
-- Summarizes overall statement statistics by user.
-- 
-- When the user found is NULL, it is assumed to be a "background" thread.
--
-- mysql> select * from user_summary_by_statement_latency;
-- +------+-------+---------------+-------------+--------------+-----------+---------------+---------------+------------+
-- | user | total | total_latency | max_latency | lock_latency | rows_sent | rows_examined | rows_affected | full_scans |
-- +------+-------+---------------+-------------+--------------+-----------+---------------+---------------+------------+
-- | root |  3381 | 00:02:09.13   | 1.48 s      | 1.07 s       |      1151 |         93947 |           150 |         91 |
-- +------+-------+---------------+-------------+--------------+-----------+---------------+---------------+------------+
--

CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW user_summary_by_statement_latency (
  user,
  total,
  total_latency,
  max_latency,
  lock_latency,
  rows_sent,
  rows_examined,
  rows_affected,
  full_scans
) AS
SELECT IF(user IS NULL, 'background', user) AS user,
       SUM(count_star) AS total,
       sys.format_time(SUM(sum_timer_wait)) AS total_latency,
       sys.format_time(SUM(max_timer_wait)) AS max_latency,
       sys.format_time(SUM(sum_lock_time)) AS lock_latency,
       SUM(sum_rows_sent) AS rows_sent,
       SUM(sum_rows_examined) AS rows_examined,
       SUM(sum_rows_affected) AS rows_affected,
       SUM(sum_no_index_used) + SUM(sum_no_good_index_used) AS full_scans
  FROM performance_schema.events_statements_summary_by_user_by_event_name
 GROUP BY IF(user IS NULL, 'background', user)
 ORDER BY SUM(sum_timer_wait) DESC;

--
-- View: x$user_summary_by_statement_latency
--
-- Summarizes overall statement statistics by user.
-- 
-- When the user found is NULL, it is assumed to be a "background" thread.
--
-- mysql> select * from x$user_summary_by_statement_latency;
-- +------+-------+-----------------+---------------+---------------+-----------+---------------+---------------+------------+
-- | user | total | total_latency   | max_latency   | lock_latency  | rows_sent | rows_examined | rows_affected | full_scans |
-- +------+-------+-----------------+---------------+---------------+-----------+---------------+---------------+------------+
-- | root |  3382 | 129134039432000 | 1483246743000 | 1069831000000 |      1152 |         94286 |           150 |         92 |
-- +------+-------+-----------------+---------------+---------------+-----------+---------------+---------------+------------+
--

CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$user_summary_by_statement_latency (
  user,
  total,
  total_latency,
  max_latency,
  lock_latency,
  rows_sent,
  rows_examined,
  rows_affected,
  full_scans
) AS
SELECT IF(user IS NULL, 'background', user) AS user,
       SUM(count_star) AS total,
       SUM(sum_timer_wait) AS total_latency,
       SUM(max_timer_wait) AS max_latency,
       SUM(sum_lock_time) AS lock_latency,
       SUM(sum_rows_sent) AS rows_sent,
       SUM(sum_rows_examined) AS rows_examined,
       SUM(sum_rows_affected) AS rows_affected,
       SUM(sum_no_index_used) + SUM(sum_no_good_index_used) AS full_scans
  FROM performance_schema.events_statements_summary_by_user_by_event_name
 GROUP BY IF(user IS NULL, 'background', user)
 ORDER BY SUM(sum_timer_wait) DESC;

--
-- View: user_summary_by_stages
--
-- Summarizes stages by user, ordered by user and total latency per stage.
-- 
-- When the user found is NULL, it is assumed to be a "background" thread.  
-- 
-- mysql> select * from user_summary_by_stages;
-- +------+--------------------------------+-------+---------------+-------------+
-- | user | event_name                     | total | total_latency | avg_latency |
-- +------+--------------------------------+-------+---------------+-------------+
-- | root | stage/sql/Opening tables       |   889 | 1.97 ms       | 2.22 us     |
-- | root | stage/sql/Creating sort index  |     4 | 1.79 ms       | 446.30 us   |
-- | root | stage/sql/init                 |    10 | 312.27 us     | 31.23 us    |
-- | root | stage/sql/checking permissions |    10 | 300.62 us     | 30.06 us    |
-- | root | stage/sql/freeing items        |     5 | 85.89 us      | 17.18 us    |
-- | root | stage/sql/statistics           |     5 | 79.15 us      | 15.83 us    |
-- | root | stage/sql/preparing            |     5 | 69.12 us      | 13.82 us    |
-- | root | stage/sql/optimizing           |     5 | 53.11 us      | 10.62 us    |
-- | root | stage/sql/Sending data         |     5 | 44.66 us      | 8.93 us     |
-- | root | stage/sql/closing tables       |     5 | 37.54 us      | 7.51 us     |
-- | root | stage/sql/System lock          |     5 | 34.28 us      | 6.86 us     |
-- | root | stage/sql/query end            |     5 | 24.37 us      | 4.87 us     |
-- | root | stage/sql/end                  |     5 | 8.60 us       | 1.72 us     |
-- | root | stage/sql/Sorting result       |     5 | 8.33 us       | 1.67 us     |
-- | root | stage/sql/executing            |     5 | 5.37 us       | 1.07 us     |
-- | root | stage/sql/cleaning up          |     5 | 4.60 us       | 919.00 ns   |
-- +------+--------------------------------+-------+---------------+-------------+
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW user_summary_by_stages (
  user,
  event_name,
  total,
  total_latency,
  avg_latency
) AS
SELECT IF(user IS NULL, 'background', user) AS user,
       event_name,
       count_star AS total,
       sys.format_time(sum_timer_wait) AS total_latency, 
       sys.format_time(avg_timer_wait) AS avg_latency 
  FROM performance_schema.events_stages_summary_by_user_by_event_name
 WHERE sum_timer_wait != 0 
 ORDER BY user, sum_timer_wait DESC;

--
-- View: x$user_summary_by_stages
--
-- Summarizes stages by user, ordered by user and total latency per stage.
-- 
-- When the user found is NULL, it is assumed to be a "background" thread.  
-- 
-- mysql> select * from x$user_summary_by_stages;
-- +------+--------------------------------+-------+---------------+-------------+
-- | user | event_name                     | total | total_latency | avg_latency |
-- +------+--------------------------------+-------+---------------+-------------+
-- | root | stage/sql/Opening tables       |  1114 |   71919037000 |    64559000 |
-- | root | stage/sql/Creating sort index  |     5 |    2245762000 |   449152000 |
-- | root | stage/sql/init                 |    13 |     428798000 |    32984000 |
-- | root | stage/sql/checking permissions |    13 |     363231000 |    27940000 |
-- | root | stage/sql/freeing items        |     7 |     137728000 |    19675000 |
-- | root | stage/sql/statistics           |     6 |      93955000 |    15659000 |
-- | root | stage/sql/preparing            |     6 |      82571000 |    13761000 |
-- | root | stage/sql/optimizing           |     6 |      63338000 |    10556000 |
-- | root | stage/sql/Sending data         |     6 |      53400000 |     8900000 |
-- | root | stage/sql/closing tables       |     7 |      46922000 |     6703000 |
-- | root | stage/sql/System lock          |     6 |      40175000 |     6695000 |
-- | root | stage/sql/query end            |     7 |      31723000 |     4531000 |
-- | root | stage/sql/Sorting result       |     6 |       9855000 |     1642000 |
-- | root | stage/sql/end                  |     6 |       9556000 |     1592000 |
-- | root | stage/sql/cleaning up          |     7 |       7312000 |     1044000 |
-- | root | stage/sql/executing            |     6 |       6487000 |     1081000 |
-- +------+--------------------------------+-------+---------------+-------------+
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$user_summary_by_stages (
  user,
  event_name,
  total,
  total_latency,
  avg_latency
) AS
SELECT IF(user IS NULL, 'background', user) AS user,
       event_name,
       count_star AS total,
       sum_timer_wait AS total_latency, 
       avg_timer_wait AS avg_latency 
  FROM performance_schema.events_stages_summary_by_user_by_event_name
 WHERE sum_timer_wait != 0 
 ORDER BY user, sum_timer_wait DESC;

--
-- View: user_summary
--
-- Summarizes statement activity and connections by user
-- 
-- When the user found is NULL, it is assumed to be a "background" thread.  
--
-- mysql> select * from user_summary;
-- +------+------------+---------------+-------------+---------------------+-------------------+--------------+----------------+------------------------+
-- | user | statements | total_latency | avg_latency | current_connections | total_connections | unique_hosts | current_memory | total_memory_allocated |
-- +------+------------+---------------+-------------+---------------------+-------------------+--------------+----------------+------------------------+
-- | root |       5663 | 00:01:47.14   | 18.92 ms    |                   1 |                 1 |            1 | 1.41 MiB       | 543.55 MiB             |
-- | mark |        225 | 14.49 s       | 64.40 ms    |                   1 |                 1 |            1 | 707.60 KiB     | 81.02 MiB              |
-- +------+------------+---------------+-------------+---------------------+-------------------+--------------+----------------+------------------------+
--

CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW user_summary (
  user,
  statements,
  statement_latency,
  statement_avg_latency,
  table_scans,
  file_ios,
  file_io_latency,
  current_connections,
  total_connections,
  unique_hosts,
  current_memory,
  total_memory_allocated
) AS
SELECT IF(accounts.user IS NULL, 'background', accounts.user) AS user,
       SUM(stmt.total) AS statements,
       sys.format_time(SUM(stmt.total_latency)) AS statement_latency,
       sys.format_time(IFNULL(SUM(stmt.total_latency) / NULLIF(SUM(stmt.total), 0), 0)) AS statement_avg_latency,
       SUM(stmt.full_scans) AS table_scans,
       SUM(io.ios) AS file_ios,
       sys.format_time(SUM(io.io_latency)) AS file_io_latency,
       SUM(accounts.current_connections) AS current_connections,
       SUM(accounts.total_connections) AS total_connections,
       COUNT(DISTINCT host) AS unique_hosts,
       sys.format_bytes(SUM(mem.current_allocated)) AS current_memory,
       sys.format_bytes(SUM(mem.total_allocated)) AS total_memory_allocated
  FROM performance_schema.accounts
  LEFT JOIN sys.x$user_summary_by_statement_latency AS stmt ON IF(accounts.user IS NULL, 'background', accounts.user) = stmt.user
  LEFT JOIN sys.x$user_summary_by_file_io AS io ON IF(accounts.user IS NULL, 'background', accounts.user) = io.user
  LEFT JOIN sys.x$memory_by_user_by_current_bytes mem ON IF(accounts.user IS NULL, 'background', accounts.user) = mem.user
 GROUP BY IF(accounts.user IS NULL, 'background', accounts.user)
 ORDER BY SUM(stmt.total_latency) DESC;

--
-- View: x$user_summary
--
-- Summarizes statement activity and connections by user
-- 
-- When the user found is NULL, it is assumed to be a "background" thread.  
--
-- mysql> select * from x$user_summary;
-- +------+------------+-----------------+------------------+---------------------+-------------------+--------------+----------------+------------------------+
-- | user | statements | total_latency   | avg_latency      | current_connections | total_connections | unique_hosts | current_memory | total_memory_allocated |
-- +------+------------+-----------------+------------------+---------------------+-------------------+--------------+----------------+------------------------+
-- | root |       5685 | 107175100271000 | 18852260381.8821 |                   1 |                 1 |            1 |        1459022 |              572855680 |
-- | mark |        225 |  14489223428000 | 64396548568.8889 |                   1 |                 1 |            1 |         724578 |               84958286 |
-- +------+------------+-----------------+------------------+---------------------+-------------------+--------------+----------------+------------------------+
--

CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$user_summary (
  user,
  statements,
  statement_latency,
  statement_avg_latency,
  table_scans,
  file_ios,
  file_io_latency,
  current_connections,
  total_connections,
  unique_hosts,
  current_memory,
  total_memory_allocated
) AS
SELECT IF(accounts.user IS NULL, 'background', accounts.user) AS user,
       SUM(stmt.total) AS statements,
       SUM(stmt.total_latency) AS statement_latency,
       IFNULL(SUM(stmt.total_latency) / NULLIF(SUM(stmt.total), 0), 0) AS statement_avg_latency,
       SUM(stmt.full_scans) AS table_scans,
       SUM(io.ios) AS file_ios,
       SUM(io.io_latency) AS file_io_latency,
       SUM(accounts.current_connections) AS current_connections,
       SUM(accounts.total_connections) AS total_connections,
       COUNT(DISTINCT host) AS unique_hosts,
       SUM(mem.current_allocated) AS current_memory,
       SUM(mem.total_allocated) AS total_memory_allocated
  FROM performance_schema.accounts
  LEFT JOIN sys.x$user_summary_by_statement_latency AS stmt ON IF(accounts.user IS NULL, 'background', accounts.user) = stmt.user
  LEFT JOIN sys.x$user_summary_by_file_io AS io ON IF(accounts.user IS NULL, 'background', accounts.user) = io.user
  LEFT JOIN sys.x$memory_by_user_by_current_bytes mem ON IF(accounts.user IS NULL, 'background', accounts.user) = mem.user
 GROUP BY IF(accounts.user IS NULL, 'background', accounts.user)
 ORDER BY SUM(stmt.total_latency) DESC;

--
-- View: host_summary_by_file_io_type
--
-- Summarizes file IO by event type per host.
--
-- When the host found is NULL, it is assumed to be a "background" thread.
--
-- mysql> select * from host_summary_by_file_io_type;
-- +------------+--------------------------------------+-------+---------------+-------------+
-- | host       | event_name                           | total | total_latency | max_latency |
-- +------------+--------------------------------------+-------+---------------+-------------+
-- | hal1       | wait/io/file/sql/FRM                 |   871 | 168.15 ms     | 18.48 ms    |
-- | hal1       | wait/io/file/innodb/innodb_data_file |   173 | 129.56 ms     | 34.09 ms    |
-- | hal1       | wait/io/file/innodb/innodb_log_file  |    20 | 77.53 ms      | 60.66 ms    |
-- | hal1       | wait/io/file/myisam/dfile            |    40 | 6.54 ms       | 4.58 ms     |
-- | hal1       | wait/io/file/mysys/charset           |     3 | 4.79 ms       | 4.71 ms     |
-- | hal1       | wait/io/file/myisam/kfile            |    67 | 4.38 ms       | 300.04 us   |
-- | hal1       | wait/io/file/sql/ERRMSG              |     5 | 2.72 ms       | 1.69 ms     |
-- | hal1       | wait/io/file/sql/pid                 |     3 | 266.30 us     | 185.47 us   |
-- | hal1       | wait/io/file/sql/casetest            |     5 | 246.81 us     | 150.19 us   |
-- | hal1       | wait/io/file/sql/global_ddl_log      |     2 | 21.24 us      | 18.59 us    |
-- | hal2       | wait/io/file/sql/file_parser         |  1422 | 4.80 s        | 135.14 ms   |
-- | hal2       | wait/io/file/sql/FRM                 |   865 | 85.82 ms      | 9.81 ms     |
-- | hal2       | wait/io/file/myisam/kfile            |  1073 | 37.14 ms      | 15.79 ms    |
-- | hal2       | wait/io/file/myisam/dfile            |  2991 | 25.53 ms      | 5.25 ms     |
-- | hal2       | wait/io/file/sql/dbopt               |    20 | 1.07 ms       | 153.07 us   |
-- | hal2       | wait/io/file/sql/misc                |     4 | 59.71 us      | 33.75 us    |
-- | hal2       | wait/io/file/archive/data            |     1 | 13.91 us      | 13.91 us    |
-- +------------+--------------------------------------+-------+---------------+-------------+
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW host_summary_by_file_io_type (
  host,
  event_name,
  total,
  total_latency,
  max_latency
) AS
SELECT IF(host IS NULL, 'background', host) AS host,
       event_name,
       count_star AS total,
       sys.format_time(sum_timer_wait) AS total_latency,
       sys.format_time(max_timer_wait) AS max_latency
  FROM performance_schema.events_waits_summary_by_host_by_event_name
 WHERE event_name LIKE 'wait/io/file%'
   AND count_star > 0
 ORDER BY IF(host IS NULL, 'background', host), sum_timer_wait DESC;

--
-- View: x$host_summary_by_file_io_type
--
-- Summarizes file IO by event type per host.
--
-- When the host found is NULL, it is assumed to be a "background" thread.
--
-- mysql> select * from x$host_summary_by_file_io_type;
-- +------------+--------------------------------------+-------+---------------+--------------+
-- | host       | event_name                           | total | total_latency | max_latency  |
-- +------------+--------------------------------------+-------+---------------+--------------+
-- | hal1       | wait/io/file/sql/FRM                 |   871 |  168148450470 |  18482624810 |
-- | hal1       | wait/io/file/innodb/innodb_data_file |   173 |  129564287450 |  34087423890 |
-- | hal1       | wait/io/file/innodb/innodb_log_file  |    20 |   77525706960 |  60657475320 |
-- | hal1       | wait/io/file/myisam/dfile            |    40 |    6544493800 |   4580546230 |
-- | hal1       | wait/io/file/mysys/charset           |     3 |    4793558770 |   4713476430 |
-- | hal1       | wait/io/file/myisam/kfile            |    67 |    4384332810 |    300035450 |
-- | hal1       | wait/io/file/sql/ERRMSG              |     5 |    2717434850 |   1687316280 |
-- | hal1       | wait/io/file/sql/pid                 |     3 |     266301490 |    185468920 |
-- | hal1       | wait/io/file/sql/casetest            |     5 |     246814360 |    150193030 |
-- | hal1       | wait/io/file/sql/global_ddl_log      |     2 |      21236410 |     18593640 |
-- | hal2       | wait/io/file/sql/file_parser         |  1422 | 4801104756760 | 135138518970 |
-- | hal2       | wait/io/file/sql/FRM                 |   865 |   85818594810 |   9812303410 |
-- | hal2       | wait/io/file/myisam/kfile            |  1073 |   37143664870 |  15793838190 |
-- | hal2       | wait/io/file/myisam/dfile            |  2991 |   25528215700 |   5252232050 |
-- | hal2       | wait/io/file/sql/dbopt               |    20 |    1067339780 |    153073310 |
-- | hal2       | wait/io/file/sql/misc                |     4 |      59713030 |     33752810 |
-- | hal2       | wait/io/file/archive/data            |     1 |      13907530 |     13907530 |
-- +------------+--------------------------------------+-------+---------------+--------------+
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$host_summary_by_file_io_type (
  host,
  event_name,
  total,
  total_latency,
  max_latency
) AS
SELECT IF(host IS NULL, 'background', host) AS host,
       event_name,
       count_star AS total,
       sum_timer_wait AS total_latency,
       max_timer_wait AS max_latency
  FROM performance_schema.events_waits_summary_by_host_by_event_name
 WHERE event_name LIKE 'wait/io/file%'
   AND count_star > 0
 ORDER BY IF(host IS NULL, 'background', host), sum_timer_wait DESC;

--
-- View: host_summary_by_file_io
--
-- Summarizes file IO totals per host.
--
-- When the host found is NULL, it is assumed to be a "background" thread.
--
-- mysql> select * from host_summary_by_file_io;
-- +------------+-------+------------+
-- | host       | ios   | io_latency |
-- +------------+-------+------------+
-- | hal1       | 26457 | 21.58 s    |
-- | hal2       |  1189 | 394.21 ms  |
-- +------------+-------+------------+
--

CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW host_summary_by_file_io (
  host,
  ios,
  io_latency
) AS
SELECT IF(host IS NULL, 'background', host) AS host,
       SUM(count_star) AS ios,
       sys.format_time(SUM(sum_timer_wait)) AS io_latency 
  FROM performance_schema.events_waits_summary_by_host_by_event_name
 WHERE event_name LIKE 'wait/io/file/%'
 GROUP BY IF(host IS NULL, 'background', host)
 ORDER BY SUM(sum_timer_wait) DESC;

--
-- View: x$host_summary_by_file_io
--
-- Summarizes file IO totals per host.
--
-- When the host found is NULL, it is assumed to be a "background" thread.
--
-- mysql> select * from x$host_summary_by_file_io;
-- +------------+-------+----------------+
-- | host       | ios   | io_latency     |
-- +------------+-------+----------------+
-- | hal1       | 26457 | 21579585586390 |
-- | hal2       |  1189 |   394212617370 |
-- +------------+-------+----------------+
--

CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$host_summary_by_file_io (
  host,
  ios,
  io_latency
) AS
SELECT IF(host IS NULL, 'background', host) AS host,
       SUM(count_star) AS ios,
       SUM(sum_timer_wait) AS io_latency 
  FROM performance_schema.events_waits_summary_by_host_by_event_name
 WHERE event_name LIKE 'wait/io/file/%'
 GROUP BY IF(host IS NULL, 'background', host)
 ORDER BY SUM(sum_timer_wait) DESC;

--
-- View: host_summary_by_statement_type
--
-- Summarizes the types of statements executed by each host.
--
-- When the host found is NULL, it is assumed to be a "background" thread.
--
-- mysql> select * from host_summary_by_statement_type;
-- +------+----------------------+--------+---------------+-------------+--------------+-----------+---------------+---------------+------------+
-- | host | statement            | total  | total_latency | max_latency | lock_latency | rows_sent | rows_examined | rows_affected | full_scans |
-- +------+----------------------+--------+---------------+-------------+--------------+-----------+---------------+---------------+------------+
-- | hal  | create_view          |   2063 | 00:05:04.20   | 463.58 ms   | 1.42 s       |         0 |             0 |             0 |          0 |
-- | hal  | select               |    174 | 40.87 s       | 28.83 s     | 858.13 ms    |      5212 |        157022 |             0 |         82 |
-- | hal  | stmt                 |   6645 | 15.31 s       | 491.78 ms   | 0 ps         |         0 |             0 |          7951 |          0 |
-- | hal  | call_procedure       |     17 | 4.78 s        | 1.02 s      | 37.94 ms     |         0 |             0 |            19 |          0 |
-- | hal  | create_table         |     19 | 3.04 s        | 431.71 ms   | 0 ps         |         0 |             0 |             0 |          0 |
-- ...
-- +------+----------------------+--------+---------------+-------------+--------------+-----------+---------------+---------------+------------+
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW host_summary_by_statement_type (
  host,
  statement,
  total,
  total_latency,
  max_latency,
  lock_latency,
  rows_sent,
  rows_examined,
  rows_affected,
  full_scans
) AS
SELECT IF(host IS NULL, 'background', host) AS host,
       SUBSTRING_INDEX(event_name, '/', -1) AS statement,
       count_star AS total,
       sys.format_time(sum_timer_wait) AS total_latency,
       sys.format_time(max_timer_wait) AS max_latency,
       sys.format_time(sum_lock_time) AS lock_latency,
       sum_rows_sent AS rows_sent,
       sum_rows_examined AS rows_examined,
       sum_rows_affected AS rows_affected,
       sum_no_index_used + sum_no_good_index_used AS full_scans
  FROM performance_schema.events_statements_summary_by_host_by_event_name
 WHERE sum_timer_wait != 0
 ORDER BY IF(host IS NULL, 'background', host), sum_timer_wait DESC;

--
-- View: x$host_summary_by_statement_type
--
-- Summarizes the types of statements executed by each host.
--
-- When the host found is NULL, it is assumed to be a "background" thread.
--
-- mysql> select * from x$host_summary_by_statement_type;
-- +------+----------------------+--------+-----------------+----------------+----------------+-----------+---------------+---------------+------------+
-- | host | statement            | total  | total_latency   | max_latency    | lock_latency   | rows_sent | rows_examined | rows_affected | full_scans |
-- +------+----------------------+--------+-----------------+----------------+----------------+-----------+---------------+---------------+------------+
-- | hal  | create_view          |   2110 | 312717366332000 |   463578029000 |  1432355000000 |         0 |             0 |             0 |          0 |
-- | hal  | select               |    177 |  41115690428000 | 28827579292000 |   858709000000 |      5254 |        157437 |             0 |         83 |
-- | hal  | stmt                 |   6645 |  15305389969000 |   491780297000 |              0 |         0 |             0 |          7951 |          0 |
-- | hal  | call_procedure       |     17 |   4783806053000 |  1016083397000 |    37936000000 |         0 |             0 |            19 |          0 |
-- | hal  | create_table         |     19 |   3035120946000 |   431706815000 |              0 |         0 |             0 |             0 |          0 |
-- ...
-- +------+----------------------+--------+-----------------+----------------+----------------+-----------+---------------+---------------+------------+
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$host_summary_by_statement_type (
  host,
  statement,
  total,
  total_latency,
  max_latency,
  lock_latency,
  rows_sent,
  rows_examined,
  rows_affected,
  full_scans
) AS
SELECT IF(host IS NULL, 'background', host) AS host,
       SUBSTRING_INDEX(event_name, '/', -1) AS statement,
       count_star AS total,
       sum_timer_wait AS total_latency,
       max_timer_wait AS max_latency,
       sum_lock_time AS lock_latency,
       sum_rows_sent AS rows_sent,
       sum_rows_examined AS rows_examined,
       sum_rows_affected AS rows_affected,
       sum_no_index_used + sum_no_good_index_used AS full_scans
  FROM performance_schema.events_statements_summary_by_host_by_event_name
 WHERE sum_timer_wait != 0
 ORDER BY IF(host IS NULL, 'background', host), sum_timer_wait DESC;

--
-- View: host_summary_by_statement_latency
--
-- Summarizes overall statement statistics by host.
--
-- When the host found is NULL, it is assumed to be a "background" thread.
--
-- mysql> select-- from host_summary_by_statement_latency;
-- +------+-------+---------------+-------------+--------------+-----------+---------------+---------------+------------+
-- | host | total | total_latency | max_latency | lock_latency | rows_sent | rows_examined | rows_affected | full_scans |
-- +------+-------+---------------+-------------+--------------+-----------+---------------+---------------+------------+
-- | hal  |  3381 | 00:02:09.13   | 1.48 s      | 1.07 s       |      1151 |         93947 |           150 |         91 |
-- +------+-------+---------------+-------------+--------------+-----------+---------------+---------------+------------+
--

CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW host_summary_by_statement_latency (
  host,
  total,
  total_latency,
  max_latency,
  lock_latency,
  rows_sent,
  rows_examined,
  rows_affected,
  full_scans
) AS
SELECT IF(host IS NULL, 'background', host) AS host,
       SUM(count_star) AS total,
       sys.format_time(SUM(sum_timer_wait)) AS total_latency,
       sys.format_time(MAX(max_timer_wait)) AS max_latency,
       sys.format_time(SUM(sum_lock_time)) AS lock_latency,
       SUM(sum_rows_sent) AS rows_sent,
       SUM(sum_rows_examined) AS rows_examined,
       SUM(sum_rows_affected) AS rows_affected,
       SUM(sum_no_index_used) + SUM(sum_no_good_index_used) AS full_scans
  FROM performance_schema.events_statements_summary_by_host_by_event_name
 GROUP BY IF(host IS NULL, 'background', host)
 ORDER BY SUM(sum_timer_wait) DESC;

--
-- View: x$host_summary_by_statement_latency
--
-- Summarizes overall statement statistics by host.
--
-- When the host found is NULL, it is assumed to be a "background" thread.
--
-- mysql> select * from x$host_summary_by_statement_latency;
-- +------+-------+-----------------+---------------+---------------+-----------+---------------+---------------+------------+
-- | host | total | total_latency   | max_latency   | lock_latency  | rows_sent | rows_examined | rows_affected | full_scans |
-- +------+-------+-----------------+---------------+---------------+-----------+---------------+---------------+------------+
-- | hal  |  3382 | 129134039432000 | 1483246743000 | 1069831000000 |      1152 |         94286 |           150 |         92 |
-- +------+-------+-----------------+---------------+---------------+-----------+---------------+---------------+------------+
--

CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$host_summary_by_statement_latency (
  host,
  total,
  total_latency,
  max_latency,
  lock_latency,
  rows_sent,
  rows_examined,
  rows_affected,
  full_scans
) AS
SELECT IF(host IS NULL, 'background', host) AS host,
       SUM(count_star) AS total,
       SUM(sum_timer_wait) AS total_latency,
       MAX(max_timer_wait) AS max_latency,
       SUM(sum_lock_time) AS lock_latency,
       SUM(sum_rows_sent) AS rows_sent,
       SUM(sum_rows_examined) AS rows_examined,
       SUM(sum_rows_affected) AS rows_affected,
       SUM(sum_no_index_used) + SUM(sum_no_good_index_used) AS full_scans
  FROM performance_schema.events_statements_summary_by_host_by_event_name
 GROUP BY IF(host IS NULL, 'background', host)
 ORDER BY SUM(sum_timer_wait) DESC;

--
-- View: host_summary_by_stages
--
-- Summarizes stages by host, ordered by host and total latency per stage.
--
-- When the host found is NULL, it is assumed to be a "background" thread.
--
-- mysql> select * from host_summary_by_stages;
-- +------+--------------------------------+-------+---------------+-------------+
-- | host | event_name                     | total | total_latency | avg_latency |
-- +------+--------------------------------+-------+---------------+-------------+
-- | hal  | stage/sql/Opening tables       |   889 | 1.97 ms       | 2.22 us     |
-- | hal  | stage/sql/Creating sort index  |     4 | 1.79 ms       | 446.30 us   |
-- | hal  | stage/sql/init                 |    10 | 312.27 us     | 31.23 us    |
-- | hal  | stage/sql/checking permissions |    10 | 300.62 us     | 30.06 us    |
-- | hal  | stage/sql/freeing items        |     5 | 85.89 us      | 17.18 us    |
-- | hal  | stage/sql/statistics           |     5 | 79.15 us      | 15.83 us    |
-- | hal  | stage/sql/preparing            |     5 | 69.12 us      | 13.82 us    |
-- | hal  | stage/sql/optimizing           |     5 | 53.11 us      | 10.62 us    |
-- | hal  | stage/sql/Sending data         |     5 | 44.66 us      | 8.93 us     |
-- | hal  | stage/sql/closing tables       |     5 | 37.54 us      | 7.51 us     |
-- | hal  | stage/sql/System lock          |     5 | 34.28 us      | 6.86 us     |
-- | hal  | stage/sql/query end            |     5 | 24.37 us      | 4.87 us     |
-- | hal  | stage/sql/end                  |     5 | 8.60 us       | 1.72 us     |
-- | hal  | stage/sql/Sorting result       |     5 | 8.33 us       | 1.67 us     |
-- | hal  | stage/sql/executing            |     5 | 5.37 us       | 1.07 us     |
-- | hal  | stage/sql/cleaning up          |     5 | 4.60 us       | 919.00 ns   |
-- +------+--------------------------------+-------+---------------+-------------+
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW host_summary_by_stages (
  host,
  event_name,
  total,
  total_latency,
  avg_latency
) AS
SELECT IF(host IS NULL, 'background', host) AS host,
       event_name,
       count_star AS total,
       sys.format_time(sum_timer_wait) AS total_latency, 
       sys.format_time(avg_timer_wait) AS avg_latency 
  FROM performance_schema.events_stages_summary_by_host_by_event_name
 WHERE sum_timer_wait != 0
 ORDER BY IF(host IS NULL, 'background', host), sum_timer_wait DESC;

--
-- View: x$host_summary_by_stages
--
-- Summarizes stages by host, ordered by host and total latency per stage.
--
-- When the host found is NULL, it is assumed to be a "background" thread.
--
-- mysql> select * from x$host_summary_by_stages;
-- +------+--------------------------------+-------+---------------+-------------+
-- | host | event_name                     | total | total_latency | avg_latency |
-- +------+--------------------------------+-------+---------------+-------------+
-- | hal  | stage/sql/Opening tables       |  1114 |   71919037000 |    64559000 |
-- | hal  | stage/sql/Creating sort index  |     5 |    2245762000 |   449152000 |
-- | hal  | stage/sql/init                 |    13 |     428798000 |    32984000 |
-- | hal  | stage/sql/checking permissions |    13 |     363231000 |    27940000 |
-- | hal  | stage/sql/freeing items        |     7 |     137728000 |    19675000 |
-- | hal  | stage/sql/statistics           |     6 |      93955000 |    15659000 |
-- | hal  | stage/sql/preparing            |     6 |      82571000 |    13761000 |
-- | hal  | stage/sql/optimizing           |     6 |      63338000 |    10556000 |
-- | hal  | stage/sql/Sending data         |     6 |      53400000 |     8900000 |
-- | hal  | stage/sql/closing tables       |     7 |      46922000 |     6703000 |
-- | hal  | stage/sql/System lock          |     6 |      40175000 |     6695000 |
-- | hal  | stage/sql/query end            |     7 |      31723000 |     4531000 |
-- | hal  | stage/sql/Sorting result       |     6 |       9855000 |     1642000 |
-- | hal  | stage/sql/end                  |     6 |       9556000 |     1592000 |
-- | hal  | stage/sql/cleaning up          |     7 |       7312000 |     1044000 |
-- | hal  | stage/sql/executing            |     6 |       6487000 |     1081000 |
-- +------+--------------------------------+-------+---------------+-------------+
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$host_summary_by_stages (
  host,
  event_name,
  total,
  total_latency,
  avg_latency
) AS
SELECT IF(host IS NULL, 'background', host) AS host,
       event_name,
       count_star AS total,
       sum_timer_wait AS total_latency, 
       avg_timer_wait AS avg_latency 
  FROM performance_schema.events_stages_summary_by_host_by_event_name
 WHERE sum_timer_wait != 0
 ORDER BY IF(host IS NULL, 'background', host), sum_timer_wait DESC;

--
-- View: host_summary
--
-- Summarizes statement activity and connections by host
--
-- When the host found is NULL, it is assumed to be a "background" thread.
--
-- mysql> select * from host_summary;
-- +------+------------+---------------+-------------+---------------------+-------------------+--------------+----------------+------------------------+
-- | host | statements | total_latency | avg_latency | current_connections | total_connections | unique_users | current_memory | total_memory_allocated |
-- +------+------------+---------------+-------------+---------------------+-------------------+--------------+----------------+------------------------+
-- | hal1 |       5663 | 00:01:47.14   | 18.92 ms    |                   1 |                 1 |            1 | 1.41 MiB       | 543.55 MiB             |
-- | hal2 |        225 | 14.49 s       | 64.40 ms    |                   1 |                 1 |            1 | 707.60 KiB     | 81.02 MiB              |
-- +------+------------+---------------+-------------+---------------------+-------------------+--------------+----------------+------------------------+
--

CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW host_summary (
  host,
  statements,
  statement_latency,
  statement_avg_latency,
  table_scans,
  file_ios,
  file_io_latency,
  current_connections,
  total_connections,
  unique_users,
  current_memory,
  total_memory_allocated
) AS
SELECT IF(accounts.host IS NULL, 'background', accounts.host) AS host,
       SUM(stmt.total) AS statements,
       sys.format_time(SUM(stmt.total_latency)) AS statement_latency,
       sys.format_time(IFNULL(SUM(stmt.total_latency) / NULLIF(SUM(stmt.total), 0), 0)) AS statement_avg_latency,
       SUM(stmt.full_scans) AS table_scans,
       SUM(io.ios) AS file_ios,
       sys.format_time(SUM(io.io_latency)) AS file_io_latency,
       SUM(accounts.current_connections) AS current_connections,
       SUM(accounts.total_connections) AS total_connections,
       COUNT(DISTINCT user) AS unique_users,
       sys.format_bytes(SUM(mem.current_allocated)) AS current_memory,
       sys.format_bytes(SUM(mem.total_allocated)) AS total_memory_allocated
  FROM performance_schema.accounts
  JOIN sys.x$host_summary_by_statement_latency AS stmt ON accounts.host = stmt.host
  JOIN sys.x$host_summary_by_file_io AS io ON accounts.host = io.host
  JOIN sys.x$memory_by_host_by_current_bytes mem ON accounts.host = mem.host
 GROUP BY IF(accounts.host IS NULL, 'background', accounts.host);

--
-- View: x$host_summary
--
-- Summarizes statement activity and connections by host
--
-- When the host found is NULL, it is assumed to be a "background" thread.
--
-- mysql> select * from x$host_summary;
-- +------+------------+-----------------+------------------+---------------------+-------------------+--------------+----------------+------------------------+
-- | host | statements | total_latency   | avg_latency      | current_connections | total_connections | unique_users | current_memory | total_memory_allocated |
-- +------+------------+-----------------+------------------+---------------------+-------------------+--------------+----------------+------------------------+
-- | hal1 |       5685 | 107175100271000 | 18852260381.8821 |                   1 |                 1 |            1 |        1459022 |              572855680 |
-- | hal2 |        225 |  14489223428000 | 64396548568.8889 |                   1 |                 1 |            1 |         724578 |               84958286 |
-- +------+------------+-----------------+------------------+---------------------+-------------------+--------------+----------------+------------------------+
--

CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$host_summary (
  host,
  statements,
  statement_latency,
  statement_avg_latency,
  table_scans,
  file_ios,
  file_io_latency,
  current_connections,
  total_connections,
  unique_users,
  current_memory,
  total_memory_allocated
) AS
SELECT IF(accounts.host IS NULL, 'background', accounts.host) AS host,
       SUM(stmt.total) AS statements,
       SUM(stmt.total_latency) AS statement_latency,
       SUM(stmt.total_latency) / SUM(stmt.total) AS statement_avg_latency,
       SUM(stmt.full_scans) AS table_scans,
       SUM(io.ios) AS file_ios,
       SUM(io.io_latency) AS file_io_latency,
       SUM(accounts.current_connections) AS current_connections,
       SUM(accounts.total_connections) AS total_connections,
       COUNT(DISTINCT accounts.user) AS unique_users,
       SUM(mem.current_allocated) AS current_memory,
       SUM(mem.total_allocated) AS total_memory_allocated
  FROM performance_schema.accounts
  JOIN sys.x$host_summary_by_statement_latency AS stmt ON accounts.host = stmt.host
  JOIN sys.x$host_summary_by_file_io AS io ON accounts.host = io.host
  JOIN sys.x$memory_by_host_by_current_bytes mem ON accounts.host = mem.host
 GROUP BY IF(accounts.host IS NULL, 'background', accounts.host);

--
-- View: wait_classes_global_by_avg_latency
-- 
-- Lists the top wait classes by average latency, ignoring idle (this may be very large).
--
-- mysql> select * from wait_classes_global_by_avg_latency where event_class != 'idle';
-- +-------------------+--------+---------------+-------------+-------------+-------------+
-- | event_class       | total  | total_latency | min_latency | avg_latency | max_latency |
-- +-------------------+--------+---------------+-------------+-------------+-------------+
-- | wait/io/file      | 543123 | 44.60 s       | 19.44 ns    | 82.11 us    | 4.21 s      |
-- | wait/io/table     |  22002 | 766.60 ms     | 148.72 ns   | 34.84 us    | 44.97 ms    |
-- | wait/io/socket    |  79613 | 967.17 ms     | 0 ps        | 12.15 us    | 27.10 ms    |
-- | wait/lock/table   |  35409 | 18.68 ms      | 65.45 ns    | 527.51 ns   | 969.88 us   |
-- | wait/synch/rwlock |  37935 | 4.61 ms       | 21.38 ns    | 121.61 ns   | 34.65 us    |
-- | wait/synch/mutex  | 390622 | 18.60 ms      | 19.44 ns    | 47.61 ns    | 10.32 us    |
-- +-------------------+--------+---------------+-------------+-------------+-------------+
--

CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW wait_classes_global_by_avg_latency (
  event_class,
  total,
  total_latency,
  min_latency,
  avg_latency,
  max_latency
) AS
SELECT SUBSTRING_INDEX(event_name,'/', 3) AS event_class,
       SUM(COUNT_STAR) AS total,
       sys.format_time(CAST(SUM(sum_timer_wait) AS UNSIGNED)) AS total_latency,
       sys.format_time(MIN(min_timer_wait)) AS min_latency,
       sys.format_time(IFNULL(SUM(sum_timer_wait) / NULLIF(SUM(COUNT_STAR), 0), 0)) AS avg_latency,
       sys.format_time(CAST(MAX(max_timer_wait) AS UNSIGNED)) AS max_latency
  FROM performance_schema.events_waits_summary_global_by_event_name
 WHERE sum_timer_wait > 0
   AND event_name != 'idle'
 GROUP BY event_class
 ORDER BY IFNULL(SUM(sum_timer_wait) / NULLIF(SUM(COUNT_STAR), 0), 0) DESC;

--
-- View: x$wait_classes_global_by_avg_latency
-- 
-- Lists the top wait classes by average latency, ignoring idle (this may be very large).
--
-- mysql> select * from x$wait_classes_global_by_avg_latency;
-- +-------------------+---------+-------------------+-------------+--------------------+------------------+
-- | event_class       | total   | total_latency     | min_latency | avg_latency        | max_latency      |
-- +-------------------+---------+-------------------+-------------+--------------------+------------------+
-- | idle              |    4331 | 16044682716000000 |     2000000 | 3704613880397.1369 | 1593550454000000 |
-- | wait/io/file      |   23037 |    20856702551880 |           0 |     905356711.0249 |     350700491310 |
-- | wait/io/table     |  224924 |      719670285750 |      116870 |       3199615.3623 |     208579012460 |
-- | wait/lock/table   |    6972 |        3674766030 |      109330 |        527074.8752 |          8855730 |
-- | wait/synch/rwlock |   11916 |        1273279800 |       37700 |        106854.6324 |          6838780 |
-- | wait/synch/mutex  | 1031881 |       80464286240 |       56550 |         77978.2613 |       2590408470 |
-- +-------------------+---------+-------------------+-------------+--------------------+------------------+
--

CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$wait_classes_global_by_avg_latency (
  event_class,
  total,
  total_latency,
  min_latency,
  avg_latency,
  max_latency
) AS
SELECT SUBSTRING_INDEX(event_name,'/', 3) AS event_class,
       SUM(COUNT_STAR) AS total,
       SUM(sum_timer_wait) AS total_latency,
       MIN(min_timer_wait) AS min_latency,
       IFNULL(SUM(sum_timer_wait) / NULLIF(SUM(COUNT_STAR), 0), 0) AS avg_latency,
       MAX(max_timer_wait) AS max_latency
  FROM performance_schema.events_waits_summary_global_by_event_name
 WHERE sum_timer_wait > 0
   AND event_name != 'idle'
 GROUP BY event_class
 ORDER BY IFNULL(SUM(sum_timer_wait) / NULLIF(SUM(COUNT_STAR), 0), 0) DESC;

--
-- View: wait_classes_global_by_latency
-- 
-- Lists the top wait classes by total latency, ignoring idle (this may be very large).
--
-- mysql> select * from wait_classes_global_by_latency;
-- +-------------------+--------+---------------+-------------+-------------+-------------+
-- | event_class       | total  | total_latency | min_latency | avg_latency | max_latency |
-- +-------------------+--------+---------------+-------------+-------------+-------------+
-- | wait/io/file      | 550470 | 46.01 s       | 19.44 ns    | 83.58 us    | 4.21 s      |
-- | wait/io/socket    | 228833 | 2.71 s        | 0 ps        | 11.86 us    | 29.93 ms    |
-- | wait/io/table     |  64063 | 1.89 s        | 99.79 ns    | 29.43 us    | 68.07 ms    |
-- | wait/lock/table   |  76029 | 47.19 ms      | 65.45 ns    | 620.74 ns   | 969.88 us   |
-- | wait/synch/mutex  | 635925 | 34.93 ms      | 19.44 ns    | 54.93 ns    | 107.70 us   |
-- | wait/synch/rwlock |  61287 | 7.62 ms       | 21.38 ns    | 124.37 ns   | 34.65 us    |
-- +-------------------+--------+---------------+-------------+-------------+-------------+
--

CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW wait_classes_global_by_latency (
  event_class,
  total,
  total_latency,
  min_latency,
  avg_latency,
  max_latency
) AS
SELECT SUBSTRING_INDEX(event_name,'/', 3) AS event_class, 
       SUM(COUNT_STAR) AS total,
       sys.format_time(SUM(sum_timer_wait)) AS total_latency,
       sys.format_time(MIN(min_timer_wait)) min_latency,
       sys.format_time(IFNULL(SUM(sum_timer_wait) / NULLIF(SUM(COUNT_STAR), 0), 0)) AS avg_latency,
       sys.format_time(MAX(max_timer_wait)) AS max_latency
  FROM performance_schema.events_waits_summary_global_by_event_name
 WHERE sum_timer_wait > 0
   AND event_name != 'idle'
 GROUP BY SUBSTRING_INDEX(event_name,'/', 3) 
 ORDER BY SUM(sum_timer_wait) DESC;

--
-- View: x$wait_classes_global_by_latency
-- 
-- Lists the top wait classes by total latency, ignoring idle (this may be very large).
--
-- mysql> SELECT * FROM x$wait_classes_global_by_latency;
-- +-------------------+---------+----------------+-------------+----------------+--------------+
-- | event_class       | total   | total_latency  | min_latency | avg_latency    | max_latency  |
-- +-------------------+---------+----------------+-------------+----------------+--------------+
-- | wait/io/file      |   29468 | 27100905420290 |           0 | 919672370.7170 | 350700491310 |
-- | wait/io/table     |  224924 |   719670285750 |      116870 |   3199615.3623 | 208579012460 |
-- | wait/synch/mutex  | 1532036 |   118515948070 |       56550 |     77358.4616 |   2590408470 |
-- | wait/io/socket    |    1193 |    10677541030 |           0 |   8950160.1257 |    287760330 |
-- | wait/lock/table   |    6972 |     3674766030 |      109330 |    527074.8752 |      8855730 |
-- | wait/synch/rwlock |   13646 |     1579833580 |       37700 |    115772.6499 |     28293850 |
-- +-------------------+---------+----------------+-------------+----------------+--------------+
--

CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$wait_classes_global_by_latency (
  event_class,
  total,
  total_latency,
  min_latency,
  avg_latency,
  max_latency
) AS
SELECT SUBSTRING_INDEX(event_name,'/', 3) AS event_class, 
       SUM(COUNT_STAR) AS total,
       SUM(sum_timer_wait) AS total_latency,
       MIN(min_timer_wait) AS min_latency,
       IFNULL(SUM(sum_timer_wait) / NULLIF(SUM(COUNT_STAR), 0), 0) AS avg_latency,
       MAX(max_timer_wait) AS max_latency
  FROM performance_schema.events_waits_summary_global_by_event_name
 WHERE sum_timer_wait > 0
   AND event_name != 'idle'
 GROUP BY SUBSTRING_INDEX(event_name,'/', 3) 
 ORDER BY SUM(sum_timer_wait) DESC;

--
-- View: waits_by_user_by_latency
--
-- Lists the top wait events per user by their total latency, ignoring idle (this may be very large).
--
-- mysql> select * from waits_by_user_by_latency;
-- +------+-----------------------------------------------------+--------+---------------+-------------+-------------+
-- | user | event                                               | total  | total_latency | avg_latency | max_latency |
-- +------+-----------------------------------------------------+--------+---------------+-------------+-------------+
-- | root | wait/io/file/sql/file_parser                        |  13743 | 00:01:00.46   | 4.40 ms     | 231.88 ms   |
-- | root | wait/io/file/innodb/innodb_data_file                |   4699 | 3.02 s        | 643.38 us   | 46.93 ms    |
-- | root | wait/io/file/sql/FRM                                |  11462 | 2.60 s        | 226.83 us   | 61.72 ms    |
-- | root | wait/io/file/myisam/dfile                           |  26776 | 746.70 ms     | 27.89 us    | 308.79 ms   |
-- | root | wait/io/file/myisam/kfile                           |   7126 | 462.66 ms     | 64.93 us    | 88.76 ms    |
-- | root | wait/io/file/sql/dbopt                              |    179 | 137.58 ms     | 768.59 us   | 15.46 ms    |
-- | root | wait/io/file/csv/metadata                           |      8 | 86.60 ms      | 10.82 ms    | 50.32 ms    |
-- | root | wait/synch/mutex/mysys/IO_CACHE::append_buffer_lock | 798080 | 66.46 ms      | 82.94 ns    | 161.03 us   |
-- | root | wait/io/file/sql/binlog                             |     19 | 49.11 ms      | 2.58 ms     | 9.40 ms     |
-- | root | wait/io/file/sql/misc                               |     26 | 22.38 ms      | 860.80 us   | 15.30 ms    |
-- | root | wait/io/file/csv/data                               |      4 | 297.46 us     | 74.37 us    | 111.93 us   |
-- | root | wait/synch/rwlock/sql/MDL_lock::rwlock              |    944 | 287.86 us     | 304.62 ns   | 874.64 ns   |
-- | root | wait/io/file/archive/data                           |      4 | 82.71 us      | 20.68 us    | 40.74 us    |
-- | root | wait/synch/mutex/myisam/MYISAM_SHARE::intern_lock   |     60 | 12.21 us      | 203.20 ns   | 512.72 ns   |
-- | root | wait/synch/mutex/innodb/trx_mutex                   |     81 | 5.93 us       | 73.14 ns    | 252.59 ns   |
-- +------+-----------------------------------------------------+--------+---------------+-------------+-------------+
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW waits_by_user_by_latency (
  user,
  event,
  total,
  total_latency,
  avg_latency,
  max_latency
) AS
SELECT IF(user IS NULL, 'background', user) AS user,
       event_name AS event,
       count_star AS total,
       sys.format_time(sum_timer_wait) AS total_latency,
       sys.format_time(avg_timer_wait) AS avg_latency,
       sys.format_time(max_timer_wait) AS max_latency
  FROM performance_schema.events_waits_summary_by_user_by_event_name
 WHERE event_name != 'idle'
   AND user IS NOT NULL
   AND sum_timer_wait > 0
 ORDER BY user, sum_timer_wait DESC;

--
-- View: x$waits_by_user_by_latency
--
-- Lists the top wait events per user by their total latency, ignoring idle (this may be very large).
--
-- mysql> select * from x$waits_by_user_by_latency;
-- +------+-----------------------------------------------------+--------+----------------+-------------+--------------+
-- | user | event                                               | total  | total_latency  | avg_latency | max_latency  |
-- +------+-----------------------------------------------------+--------+----------------+-------------+--------------+
-- | root | wait/io/file/sql/file_parser                        |  13745 | 60462025415480 |  4398837508 | 231881092170 |
-- | root | wait/io/file/innodb/innodb_data_file                |   4699 |  3023248450820 |   643381037 |  46928334180 |
-- | root | wait/io/file/sql/FRM                                |  11467 |  2600067790580 |   226743257 |  61718277920 |
-- | root | wait/io/file/myisam/dfile                           |  26776 |   746701506200 |    27886690 | 308785046960 |
-- | root | wait/io/file/myisam/kfile                           |   7126 |   462661061590 |    64925432 |  88756408780 |
-- | root | wait/io/file/sql/dbopt                              |    179 |   137577467690 |   768589146 |  15457199810 |
-- | root | wait/io/file/csv/metadata                           |      8 |    86599791590 | 10824973666 |  50322529270 |
-- | root | wait/synch/mutex/mysys/IO_CACHE::append_buffer_lock | 798080 |    66461175430 |       82940 |    161028010 |
-- | root | wait/io/file/sql/binlog                             |     19 |    49110632610 |  2584770058 |   9400449760 |
-- | root | wait/io/file/sql/misc                               |     26 |    22380676630 |   860795052 |  15298475270 |
-- | root | wait/io/file/csv/data                               |      4 |      297460540 |    74365135 |    111931300 |
-- | root | wait/synch/rwlock/sql/MDL_lock::rwlock              |    944 |      287862120 |      304616 |       874640 |
-- | root | wait/io/file/archive/data                           |      4 |       82713800 |    20678450 |     40738620 |
-- | root | wait/synch/mutex/myisam/MYISAM_SHARE::intern_lock   |     60 |       12211030 |      203203 |       512720 |
-- | root | wait/synch/mutex/innodb/trx_mutex                   |     81 |        5926440 |       73138 |       252590 |
-- +------+-----------------------------------------------------+--------+----------------+-------------+--------------+
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$waits_by_user_by_latency (
  user,
  event,
  total,
  total_latency,
  avg_latency,
  max_latency
) AS
SELECT IF(user IS NULL, 'background', user) AS user,
       event_name AS event,
       count_star AS total,
       sum_timer_wait AS total_latency,
       avg_timer_wait AS avg_latency,
       max_timer_wait AS max_latency
  FROM performance_schema.events_waits_summary_by_user_by_event_name
 WHERE event_name != 'idle'
   AND user IS NOT NULL
   AND sum_timer_wait > 0
 ORDER BY user, sum_timer_wait DESC;

--
-- View: waits_by_host_by_latency
--
-- Lists the top wait events per host by their total latency, ignoring idle (this may be very large).
--
-- mysql> select * from sys.waits_by_host_by_latency where host != 'background' limit 5;
-- +-----------+------------------------------+-------+---------------+-------------+-------------+
-- | host      | event                        | total | total_latency | avg_latency | max_latency |
-- +-----------+------------------------------+-------+---------------+-------------+-------------+
-- | localhost | wait/io/file/sql/file_parser |  1386 | 14.50 s       | 10.46 ms    | 357.36 ms   |
-- | localhost | wait/io/file/sql/FRM         |   162 | 356.08 ms     | 2.20 ms     | 75.33 ms    |
-- | localhost | wait/io/file/myisam/kfile    |   410 | 322.29 ms     | 786.08 us   | 65.98 ms    |
-- | localhost | wait/io/file/myisam/dfile    |  1327 | 307.44 ms     | 231.68 us   | 37.16 ms    |
-- | localhost | wait/io/file/sql/dbopt       |    89 | 180.34 ms     | 2.03 ms     | 63.41 ms    |
-- +-----------+------------------------------+-------+---------------+-------------+-------------+
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW waits_by_host_by_latency (
  host,
  event,
  total,
  total_latency,
  avg_latency,
  max_latency
) AS
SELECT IF(host IS NULL, 'background', host) AS host,
       event_name AS event,
       count_star AS total,
       sys.format_time(sum_timer_wait) AS total_latency,
       sys.format_time(avg_timer_wait) AS avg_latency,
       sys.format_time(max_timer_wait) AS max_latency
  FROM performance_schema.events_waits_summary_by_host_by_event_name
 WHERE event_name != 'idle'
   AND sum_timer_wait > 0
 ORDER BY host, sum_timer_wait DESC;

--
-- View: waits_by_host_by_latency
--
-- Lists the top wait events per host by their total latency, ignoring idle (this may be very large).
--
-- mysql> select * from sys.x$waits_by_host_by_latency where host != 'background' limit 5;
-- +-----------+------------------------------+-------+----------------+-------------+--------------+
-- | host      | event                        | total | total_latency  | avg_latency | max_latency  |
-- +-----------+------------------------------+-------+----------------+-------------+--------------+
-- | localhost | wait/io/file/sql/file_parser |  1388 | 14502657551590 | 10448600240 | 357364034170 |
-- | localhost | wait/io/file/sql/FRM         |   167 |   361060236420 |  2162037319 |  75331088170 |
-- | localhost | wait/io/file/myisam/kfile    |   410 |   322294755250 |   786084585 |  65978227120 |
-- | localhost | wait/io/file/myisam/dfile    |  1327 |   307435262550 |   231676679 |  37162925800 |
-- | localhost | wait/io/file/sql/dbopt       |    89 |   180341976360 |  2026314303 |  63405386850 |
-- +-----------+------------------------------+-------+----------------+-------------+--------------+
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$waits_by_host_by_latency (
  host,
  event,
  total,
  total_latency,
  avg_latency,
  max_latency
) AS
SELECT IF(host IS NULL, 'background', host) AS host,
       event_name AS event,
       count_star AS total,
       sum_timer_wait AS total_latency,
       avg_timer_wait AS avg_latency,
       max_timer_wait AS max_latency
  FROM performance_schema.events_waits_summary_by_host_by_event_name
 WHERE event_name != 'idle'
   AND sum_timer_wait > 0
 ORDER BY host, sum_timer_wait DESC;

--
-- View: waits_global_by_latency
--
-- Lists the top wait events by their total latency, ignoring idle (this may be very large).
--
-- mysql> select * from waits_global_by_latency limit 5;
-- +--------------------------------------+------------+---------------+-------------+-------------+
-- | event                                | total      | total_latency | avg_latency | max_latency |
-- +--------------------------------------+------------+---------------+-------------+-------------+
-- | wait/io/file/myisam/dfile            | 3623719744 | 00:47:49.09   | 791.70 ns   | 312.96 ms   |
-- | wait/io/table/sql/handler            |   69114944 | 00:44:30.74   | 38.64 us    | 879.49 ms   |
-- | wait/io/file/innodb/innodb_log_file  |   28100261 | 00:37:42.12   | 80.50 us    | 476.00 ms   |
-- | wait/io/socket/sql/client_connection |  200704863 | 00:18:37.81   | 5.57 us     | 1.27 s      |
-- | wait/io/file/innodb/innodb_data_file |    2829403 | 00:08:12.89   | 174.20 us   | 455.22 ms   |
-- +--------------------------------------+------------+---------------+-------------+-------------+
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW waits_global_by_latency (
  events,
  total,
  total_latency,
  avg_latency,
  max_latency
) AS
SELECT event_name AS event,
       count_star AS total,
       sys.format_time(sum_timer_wait) AS total_latency,
       sys.format_time(avg_timer_wait) AS avg_latency,
       sys.format_time(max_timer_wait) AS max_latency
  FROM performance_schema.events_waits_summary_global_by_event_name
 WHERE event_name != 'idle'
   AND sum_timer_wait > 0
 ORDER BY sum_timer_wait DESC;

--
-- View: x$waits_global_by_latency
--
-- Lists the top wait events by their total latency, ignoring idle (this may be very large).
--
-- mysql> select * from x$waits_global_by_latency limit 5;
-- +--------------------------------------+-------+---------------+-------------+--------------+
-- | event                                | total | total_latency | avg_latency | max_latency  |
-- +--------------------------------------+-------+---------------+-------------+--------------+
-- | wait/io/file/sql/file_parser         |   679 | 3536136351540 |  5207858773 | 129860439800 |
-- | wait/io/file/innodb/innodb_data_file |   195 |  848170566100 |  4349592637 | 350700491310 |
-- | wait/io/file/sql/FRM                 |  1355 |  400428476500 |   295518990 |  44823120940 |
-- | wait/io/file/innodb/innodb_log_file  |    20 |   54298899070 |  2714944765 |  30108124800 |
-- | wait/io/file/mysys/charset           |     3 |   24244722970 |  8081574072 |  24151547420 |
-- +--------------------------------------+-------+---------------+-------------+--------------+
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$waits_global_by_latency (
  events,
  total,
  total_latency,
  avg_latency,
  max_latency
) AS
SELECT event_name AS event,
       count_star AS total,
       sum_timer_wait AS total_latency,
       avg_timer_wait AS avg_latency,
       max_timer_wait AS max_latency
  FROM performance_schema.events_waits_summary_global_by_event_name
 WHERE event_name != 'idle'
   AND sum_timer_wait > 0
 ORDER BY sum_timer_wait DESC;

-- Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
--
--   This program is free software; you can redistribute it and/or modify
--   it under the terms of the GNU General Public License as published by
--   the Free Software Foundation; version 2 of the License.
--
--   This program is distributed in the hope that it will be useful,
--   but WITHOUT ANY WARRANTY; without even the implied warranty of
--   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
--   GNU General Public License for more details.
--
--   You should have received a copy of the GNU General Public License
--   along with this program; if not, write to the Free Software
--   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

-- IMPORTANT
-- If you update this view, also update the "5.7+ and the Performance Schema disabled"
-- query in procedures/diagnostics.sql

-- View: metrics
-- 
-- Creates a union of the following information:
--
--    *  performance_schema.global_status
--    *  information_schema.INNODB_METRICS
--    *  Performance Schema global memory usage information
--    *  Current time
--
-- This is the same as the metrics_56 view with the exception that the global status is taken from performance_schema.global_status instead of
-- from the Information Schema. Use this view if the MySQL version is 5.7.6 or later and show_compatibility_56 = OFF.
-- See also https://dev.mysql.com/doc/refman/5.7/en/server-system-variables.html#sysvar_show_compatibility_56
-- 
-- For view has the following columns:
-- 
--    * Variable_name: The name of the variable
--    * Variable_value: The value of the variable
--    * Type: The type of the variable. This will depend on the source, e.g. Global Status, InnoDB Metrics - ..., etc.
--    * Enabled: Whether the variable is enabled or not. Possible values are 'YES', 'NO', 'PARTIAL'.
--      PARTIAL is currently only supported for the memory usage variables and means some but not all of the memory/% instruments
--      are enabled.
--
-- mysql> SELECT * FROM metrics;
-- +-----------------------------------------------+-------------------------...+--------------------------------------+---------+
-- | Variable_name                                 | Variable_value          ...| Type                                 | Enabled |
-- +-----------------------------------------------+-------------------------...+--------------------------------------+---------+
-- | aborted_clients                               | 0                       ...| Global Status                        | YES     |
-- | aborted_connects                              | 0                       ...| Global Status                        | YES     |
-- | binlog_cache_disk_use                         | 0                       ...| Global Status                        | YES     |
-- | binlog_cache_use                              | 0                       ...| Global Status                        | YES     |
-- | binlog_stmt_cache_disk_use                    | 0                       ...| Global Status                        | YES     |
-- | binlog_stmt_cache_use                         | 0                       ...| Global Status                        | YES     |
-- | bytes_received                                | 217081                  ...| Global Status                        | YES     |
-- | bytes_sent                                    | 27257                   ...| Global Status                        | YES     |
-- ...
-- | innodb_rwlock_x_os_waits                      | 0                       ...| InnoDB Metrics - server              | YES     |
-- | innodb_rwlock_x_spin_rounds                   | 2723                    ...| InnoDB Metrics - server              | YES     |
-- | innodb_rwlock_x_spin_waits                    | 1                       ...| InnoDB Metrics - server              | YES     |
-- | trx_active_transactions                       | 0                       ...| InnoDB Metrics - transaction         | NO      |
-- ...
-- | trx_rseg_current_size                         | 0                       ...| InnoDB Metrics - transaction         | NO      |
-- | trx_rseg_history_len                          | 4                       ...| InnoDB Metrics - transaction         | YES     |
-- | trx_rw_commits                                | 0                       ...| InnoDB Metrics - transaction         | NO      |
-- | trx_undo_slots_cached                         | 0                       ...| InnoDB Metrics - transaction         | NO      |
-- | trx_undo_slots_used                           | 0                       ...| InnoDB Metrics - transaction         | NO      |
-- | memory_current_allocated                      | 138244216               ...| Performance Schema                   | PARTIAL |
-- | memory_total_allocated                        | 138244216               ...| Performance Schema                   | PARTIAL |
-- | NOW()                                         | 2015-05-31 13:27:50.382 ...| System Time                          | YES     |
-- | UNIX_TIMESTAMP()                              | 1433042870.382          ...| System Time                          | YES     |
-- +-----------------------------------------------+-------------------------...+--------------------------------------+---------+
-- 412 rows in set (0.02 sec)
DELIMITER $$
BEGIN NOT ATOMIC
DECLARE EXIT HANDLER FOR SQLEXCEPTION BEGIN END;

CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW metrics (
  Variable_name,
  Variable_value,
  Type,
  Enabled
) AS
(
SELECT LOWER(VARIABLE_NAME) AS Variable_name, VARIABLE_VALUE AS Variable_value, 'Global Status' AS Type, 'YES' AS Enabled
  FROM performance_schema.global_status
) UNION ALL (
SELECT NAME AS Variable_name, COUNT AS Variable_value,
       CONCAT('InnoDB Metrics - ', SUBSYSTEM) AS Type,
      'YES' AS Enabled
  FROM information_schema.INNODB_METRICS
  -- Deduplication - some variables exists both in GLOBAL_STATUS and INNODB_METRICS
  -- Keep the one from GLOBAL_STATUS as it is always enabled and it's more likely to be used for existing tools.
 WHERE NAME NOT IN (
     'lock_row_lock_time', 'lock_row_lock_time_avg', 'lock_row_lock_time_max', 'lock_row_lock_waits',
     'buffer_pool_reads', 'buffer_pool_read_requests', 'buffer_pool_write_requests', 'buffer_pool_wait_free',
     'buffer_pool_read_ahead', 'buffer_pool_read_ahead_evicted', 'buffer_pool_pages_total', 'buffer_pool_pages_misc',
     'buffer_pool_pages_data', 'buffer_pool_bytes_data', 'buffer_pool_pages_dirty', 'buffer_pool_bytes_dirty',
     'buffer_pool_pages_free', 'buffer_pages_created', 'buffer_pages_written', 'buffer_pages_read',
     'buffer_data_reads', 'buffer_data_written', 'file_num_open_files',
     'os_log_bytes_written', 'os_log_fsyncs', 'os_log_pending_fsyncs', 'os_log_pending_writes',
     'log_waits', 'log_write_requests', 'log_writes', 'innodb_dblwr_writes', 'innodb_dblwr_pages_written', 'innodb_page_size')
) /*!50702
  -- memory instrumentation available in 5.7.2 and later
  UNION ALL (
SELECT 'memory_current_allocated' AS Variable_name, SUM(CURRENT_NUMBER_OF_BYTES_USED) AS Variable_value, 'Performance Schema' AS Type,
        IF((SELECT COUNT(*) FROM performance_schema.setup_instruments WHERE NAME LIKE 'memory/%' AND ENABLED = 'YES') = 0, 'NO',
        IF((SELECT COUNT(*) FROM performance_schema.setup_instruments WHERE NAME LIKE 'memory/%' AND ENABLED = 'YES') = (SELECT COUNT(*) FROM performance_schema.setup_instruments WHERE NAME LIKE 'memory/%'), 'YES',
            'PARTIAL')) AS Enabled
  FROM performance_schema.memory_summary_global_by_event_name
) UNION ALL (
SELECT 'memory_total_allocated' AS Variable_name, SUM(SUM_NUMBER_OF_BYTES_ALLOC) AS Variable_value, 'Performance Schema' AS Type,
        IF((SELECT COUNT(*) FROM performance_schema.setup_instruments WHERE NAME LIKE 'memory/%' AND ENABLED = 'YES') = 0, 'NO',
        IF((SELECT COUNT(*) FROM performance_schema.setup_instruments WHERE NAME LIKE 'memory/%' AND ENABLED = 'YES') = (SELECT COUNT(*) FROM performance_schema.setup_instruments WHERE NAME LIKE 'memory/%'), 'YES',
            'PARTIAL')) AS Enabled
  FROM performance_schema.memory_summary_global_by_event_name
) */
  UNION ALL (
SELECT 'NOW()' AS Variable_name, NOW(3) AS Variable_value, 'System Time' AS Type, 'YES' AS Enabled
) UNION ALL (
SELECT 'UNIX_TIMESTAMP()' AS Variable_name, ROUND(UNIX_TIMESTAMP(NOW(3)), 3) AS Variable_value, 'System Time' AS Type, 'YES' AS Enabled
)
 ORDER BY Type, Variable_name;
END$$
DELIMITER ;
-- Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved.
--
-- This program is free software; you can redistribute it and/or modify
-- it under the terms of the GNU General Public License as published by
-- the Free Software Foundation; version 2 of the License.
--
-- This program is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-- GNU General Public License for more details.
--
-- You should have received a copy of the GNU General Public License
-- along with this program; if not, write to the Free Software
-- Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

--
-- View: processlist
--
-- A detailed non-blocking processlist view to replace 
-- [INFORMATION_SCHEMA. | SHOW FULL] PROCESSLIST
-- 
-- Performs less locking than the legacy sources, whilst giving extra information.
--
-- mysql> select * from sys.processlist where conn_id is not null and command != 'daemon' and conn_id != connection_id()\G
-- *************************** 1. row ***************************
--                 thd_id: 44524
--                conn_id: 44502
--                   user: msandbox@localhost
--                     db: test
--                command: Query
--                  state: alter table (flush)
--                   time: 18
--      current_statement: alter table t1 add column g int
--      statement_latency: 18.45 s
--               progress: 98.84
--           lock_latency: 265.43 ms
--          rows_examined: 0
--              rows_sent: 0
--          rows_affected: 0
--             tmp_tables: 0
--        tmp_disk_tables: 0
--              full_scan: NO
--         last_statement: NULL
-- last_statement_latency: NULL
--         current_memory: 664.06 KiB
--              last_wait: wait/io/file/innodb/innodb_data_file
--      last_wait_latency: 1.07 us
--                 source: fil0fil.cc:5146
--            trx_latency: NULL
--              trx_state: NULL
--         trx_autocommit: NULL
--                    pid: 4212
--           program_name: mysql
--

CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER
VIEW processlist (
  thd_id,
  conn_id,
  user,
  db,
  command,
  state,
  time,
  current_statement,
  statement_latency,
  progress,
  lock_latency,
  rows_examined,
  rows_sent,
  rows_affected,
  tmp_tables,
  tmp_disk_tables,
  full_scan,
  last_statement,
  last_statement_latency,
  current_memory,
  last_wait,
  last_wait_latency,
  source,
  trx_latency,
  trx_state,
  trx_autocommit,
  pid,
  program_name
) AS
SELECT pps.thread_id AS thd_id,
       pps.processlist_id AS conn_id,
       IF(pps.name = 'thread/sql/one_connection',
          CONCAT(pps.processlist_user, '@', pps.processlist_host),
          REPLACE(pps.name, 'thread/', '')) user,
       pps.processlist_db AS db,
       pps.processlist_command AS command,
       pps.processlist_state AS state,
       pps.processlist_time AS time,
       sys.format_statement(pps.processlist_info) AS current_statement,
       IF(esc.end_event_id IS NULL,
          sys.format_time(esc.timer_wait),
          NULL) AS statement_latency,
       IF(esc.end_event_id IS NULL,
          ROUND(100 * (estc.work_completed / estc.work_estimated), 2),
          NULL) AS progress,
       sys.format_time(esc.lock_time) AS lock_latency,
       esc.rows_examined AS rows_examined,
       esc.rows_sent AS rows_sent,
       esc.rows_affected AS rows_affected,
       esc.created_tmp_tables AS tmp_tables,
       esc.created_tmp_disk_tables AS tmp_disk_tables,
       IF(esc.no_good_index_used > 0 OR esc.no_index_used > 0, 'YES', 'NO') AS full_scan,
       IF(esc.end_event_id IS NOT NULL,
          sys.format_statement(esc.sql_text),
          NULL) AS last_statement,
       IF(esc.end_event_id IS NOT NULL,
          sys.format_time(esc.timer_wait),
          NULL) AS last_statement_latency,
       sys.format_bytes(mem.current_allocated) AS current_memory,
       ewc.event_name AS last_wait,
       IF(ewc.end_event_id IS NULL AND ewc.event_name IS NOT NULL,
          'Still Waiting',
          sys.format_time(ewc.timer_wait)) last_wait_latency,
       ewc.source,
       sys.format_time(etc.timer_wait) AS trx_latency,
       etc.state AS trx_state,
       etc.autocommit AS trx_autocommit,
       conattr_pid.attr_value as pid,
       conattr_progname.attr_value as program_name
  FROM performance_schema.threads AS pps
  LEFT JOIN performance_schema.events_waits_current AS ewc USING (thread_id)
  LEFT JOIN performance_schema.events_stages_current AS estc USING (thread_id)
  LEFT JOIN performance_schema.events_statements_current AS esc USING (thread_id)
  LEFT JOIN performance_schema.events_transactions_current AS etc USING (thread_id)
  LEFT JOIN sys.x$memory_by_thread_by_current_bytes AS mem USING (thread_id)
  LEFT JOIN performance_schema.session_connect_attrs AS conattr_pid
    ON conattr_pid.processlist_id=pps.processlist_id and conattr_pid.attr_name='_pid'
  LEFT JOIN performance_schema.session_connect_attrs AS conattr_progname
    ON conattr_progname.processlist_id=pps.processlist_id and conattr_progname.attr_name='program_name'
 ORDER BY pps.processlist_time DESC, last_wait_latency DESC;

--
-- View: x$processlist
--
-- A detailed non-blocking processlist view to replace 
-- [INFORMATION_SCHEMA. | SHOW FULL] PROCESSLIST
-- 
-- Performs less locking than the legacy sources, whilst giving extra information.
--
-- mysql> select * from sys.x$processlist where conn_id is not null and command != 'daemon' and conn_id != connection_id()\G
-- ...
-- *************************** 2. row ***************************
--                 thd_id: 720
--                conn_id: 698
--                   user: msandbox@localhost
--                     db: test
--                command: Query
--                  state: alter table (read PK and internal sort)
--                   time: 2
--      current_statement: alter table t1 add column l int
--      statement_latency: 2349834276374
--               progress: 60.00
--           lock_latency: 339707000000
--          rows_examined: 0
--              rows_sent: 0
--          rows_affected: 0
--             tmp_tables: 0
--        tmp_disk_tables: 0
--              full_scan: NO
--         last_statement: NULL
-- last_statement_latency: NULL
--         current_memory: 10186821
--              last_wait: wait/io/file/innodb/innodb_data_file
--      last_wait_latency: Still Waiting
--                 source: fil0fil.cc:5351
--            trx_latency: NULL
--              trx_state: NULL
--         trx_autocommit: NULL
--                    pid: 5559
--           program_name: mysql
--

CREATE OR REPLACE
  ALGORITHM = TEMPTABLE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER
VIEW x$processlist (
  thd_id,
  conn_id,
  user,
  db,
  command,
  state,
  time,
  current_statement,
  statement_latency,
  progress,
  lock_latency,
  rows_examined,
  rows_sent,
  rows_affected,
  tmp_tables,
  tmp_disk_tables,
  full_scan,
  last_statement,
  last_statement_latency,
  current_memory,
  last_wait,
  last_wait_latency,
  source,
  trx_latency,
  trx_state,
  trx_autocommit,
  pid,
  program_name
) AS
SELECT pps.thread_id AS thd_id,
       pps.processlist_id AS conn_id,
       IF(pps.name = 'thread/sql/one_connection',
          CONCAT(pps.processlist_user, '@', pps.processlist_host),
          REPLACE(pps.name, 'thread/', '')) user,
       pps.processlist_db AS db,
       pps.processlist_command AS command,
       pps.processlist_state AS state,
       pps.processlist_time AS time,
       pps.processlist_info AS current_statement,
       IF(esc.end_event_id IS NULL,
          esc.timer_wait,
          NULL) AS statement_latency,
       IF(esc.end_event_id IS NULL,
          ROUND(100 * (estc.work_completed / estc.work_estimated), 2),
          NULL) AS progress,
       esc.lock_time AS lock_latency,
       esc.rows_examined AS rows_examined,
       esc.rows_sent AS rows_sent,
       esc.rows_affected AS rows_affected,
       esc.created_tmp_tables AS tmp_tables,
       esc.created_tmp_disk_tables AS tmp_disk_tables,
       IF(esc.no_good_index_used > 0 OR esc.no_index_used > 0, 'YES', 'NO') AS full_scan,
       IF(esc.end_event_id IS NOT NULL,
          esc.sql_text,
          NULL) AS last_statement,
       IF(esc.end_event_id IS NOT NULL,
          esc.timer_wait,
          NULL) AS last_statement_latency,
       mem.current_allocated AS current_memory,
       ewc.event_name AS last_wait,
       IF(ewc.end_event_id IS NULL AND ewc.event_name IS NOT NULL,
          'Still Waiting', 
          ewc.timer_wait) last_wait_latency,
       ewc.source,
       etc.timer_wait AS trx_latency,
       etc.state AS trx_state,
       etc.autocommit AS trx_autocommit,
       conattr_pid.attr_value as pid,
       conattr_progname.attr_value as program_name
  FROM performance_schema.threads AS pps
  LEFT JOIN performance_schema.events_waits_current AS ewc USING (thread_id)
  LEFT JOIN performance_schema.events_stages_current AS estc USING (thread_id)
  LEFT JOIN performance_schema.events_statements_current AS esc USING (thread_id)
  LEFT JOIN performance_schema.events_transactions_current AS etc USING (thread_id)
  LEFT JOIN sys.x$memory_by_thread_by_current_bytes AS mem USING (thread_id)
  LEFT JOIN performance_schema.session_connect_attrs AS conattr_pid
    ON conattr_pid.processlist_id=pps.processlist_id and conattr_pid.attr_name='_pid'
  LEFT JOIN performance_schema.session_connect_attrs AS conattr_progname
    ON conattr_progname.processlist_id=pps.processlist_id and conattr_progname.attr_name='program_name'
 ORDER BY pps.processlist_time DESC, last_wait_latency DESC;

--
-- View: session
--
-- Filter sys.processlist to only show user sessions and not background threads.
-- This is a non-blocking closer replacement to
-- [INFORMATION_SCHEMA. | SHOW FULL] PROCESSLIST
-- 
-- Performs less locking than the legacy sources, whilst giving extra information.
--
-- mysql> select * from sys.session\G
-- *************************** 1. row ***************************
--                 thd_id: 24
--                conn_id: 2
--                   user: root@localhost
--                     db: sys
--                command: Query
--                  state: Sending data
--                   time: 0
--      current_statement: select * from sys.session
--      statement_latency: 137.22 ms
--               progress: NULL
--           lock_latency: 33.75 ms
--          rows_examined: 0
--              rows_sent: 0
--          rows_affected: 0
--             tmp_tables: 4
--        tmp_disk_tables: 1
--              full_scan: YES
--         last_statement: NULL
-- last_statement_latency: NULL
--         current_memory: 3.26 MiB
--              last_wait: wait/synch/mutex/innodb/file_format_max_mutex
--      last_wait_latency: 64.09 ns
--                 source: trx0sys.cc:778
--            trx_latency: 7.88 s
--              trx_state: ACTIVE
--         trx_autocommit: NO
--                    pid: 4212
--           program_name: mysql
--

CREATE OR REPLACE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW session
 AS
SELECT * FROM sys.processlist
WHERE conn_id IS NOT NULL AND command != 'Daemon';

--
-- View: x$session
--
-- Filter sys.processlist to only show user sessions and not background threads.
-- This is a non-blocking closer replacement to
-- [INFORMATION_SCHEMA. | SHOW FULL] PROCESSLIST
-- 
-- Performs less locking than the legacy sources, whilst giving extra information.
--
-- mysql> select * from sys.x$session\G
-- *************************** 1. row ***************************
--                 thd_id: 24
--                conn_id: 2
--                   user: root@localhost
--                     db: sys
--                command: Query
--                  state: Sending data
--                   time: 0
--      current_statement: select * from sys.x$session
--      statement_latency: 16285980000
--               progress: NULL
--           lock_latency: 15450000000
--          rows_examined: 0
--              rows_sent: 0
--          rows_affected: 0
--             tmp_tables: 4
--        tmp_disk_tables: 1
--              full_scan: YES
--         last_statement: NULL
-- last_statement_latency: NULL
--         current_memory: 3383772
--              last_wait: wait/synch/mutex/innodb/trx_mutex
--      last_wait_latency: 56550
--                 source: trx0trx.h:1520
--            trx_latency: 17893350207000
--              trx_state: ACTIVE
--         trx_autocommit: NO
--                    pid: 5559
--           program_name: mysql
--

CREATE OR REPLACE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER 
VIEW x$session
 AS
SELECT * FROM sys.x$processlist
WHERE conn_id IS NOT NULL AND command != 'Daemon';

--
-- View: session_ssl_status
--
-- Shows SSL version, cipher and the count of re-used SSL sessions per connection
--
-- mysql> select * from session_ssl_status;
-- +-----------+-------------+--------------------+---------------------+
-- | thread_id | ssl_version | ssl_cipher         | ssl_sessions_reused |
-- +-----------+-------------+--------------------+---------------------+
-- |        26 | TLSv1       | DHE-RSA-AES256-SHA | 0                   |
-- |        27 | TLSv1       | DHE-RSA-AES256-SHA | 0                   |
-- |        28 | TLSv1       | DHE-RSA-AES256-SHA | 0                   |
-- +-----------+-------------+--------------------+---------------------+
-- 3 rows in set (0.00 sec)
--

CREATE OR REPLACE
  ALGORITHM = MERGE
  DEFINER = 'mariadb.sys'@'localhost'
  SQL SECURITY INVOKER
VIEW session_ssl_status (
  thread_id,
  ssl_version,
  ssl_cipher,
  ssl_sessions_reused
) AS
SELECT sslver.thread_id, 
       sslver.variable_value ssl_version, 
       sslcip.variable_value ssl_cipher,
       sslreuse.variable_value ssl_sessions_reused
  FROM performance_schema.status_by_thread sslver 
  LEFT JOIN performance_schema.status_by_thread sslcip 
    ON (sslcip.thread_id=sslver.thread_id and sslcip.variable_name='Ssl_cipher')
  LEFT JOIN performance_schema.status_by_thread sslreuse 
    ON (sslreuse.thread_id=sslver.thread_id and sslreuse.variable_name='Ssl_sessions_reused') 
 WHERE sslver.variable_name='Ssl_version';

DROP PROCEDURE IF EXISTS create_synonym_db;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' PROCEDURE create_synonym_db (
        IN in_db_name VARCHAR(64), 
        IN in_synonym VARCHAR(64)
    )
    COMMENT '
             Description
             -----------

Takes a source database name and synonym name, and then creates the 
             synonym database with views that point to all of the tables within
             the source database.

Useful for creating a "ps" synonym for "performance_schema",
             or "is" instead of "information_schema", for example.

Parameters
             -----------

in_db_name (VARCHAR(64)):
               The database name that you would like to create a synonym for.
             in_synonym (VARCHAR(64)):
               The database synonym name.

Example
             -----------

mysql> CALL sys.create_synonym_db(\'performance_schema\', \'ps\');
             +---------------------------------------+
             | summary                               |
             +---------------------------------------+
             | Created 74 views in the `ps` database |
             +---------------------------------------+
             1 row in set (8.57 sec)

Query OK, 0 rows affected (8.57 sec)

mysql> SHOW FULL TABLES FROM ps;
             +------------------------------------------------------+------------+
             | Tables_in_ps                                         | Table_type |
             +------------------------------------------------------+------------+
             | accounts                                             | VIEW       |
             | cond_instances                                       | VIEW       |
             | events_stages_current                                | VIEW       |
             | events_stages_history                                | VIEW       |
             ...
            '
    SQL SECURITY INVOKER
    NOT DETERMINISTIC
    MODIFIES SQL DATA
BEGIN
    DECLARE v_done bool DEFAULT FALSE;
    DECLARE v_db_name_check VARCHAR(64);
    DECLARE v_db_err_msg TEXT;
    DECLARE v_table VARCHAR(64);
    DECLARE v_views_created INT DEFAULT 0;
    DECLARE v_table_exists ENUM('', 'BASE TABLE', 'VIEW', 'TEMPORARY') DEFAULT '';
    DECLARE v_temp_table TEXT;

DECLARE c_table_names CURSOR FOR 
        SELECT TABLE_NAME 
          FROM INFORMATION_SCHEMA.TABLES 
         WHERE TABLE_SCHEMA = in_db_name;

DECLARE CONTINUE HANDLER FOR NOT FOUND SET v_done = TRUE;

-- Check if the source database exists
    SELECT SCHEMA_NAME INTO v_db_name_check
      FROM INFORMATION_SCHEMA.SCHEMATA
     WHERE SCHEMA_NAME = in_db_name;

IF v_db_name_check IS NULL THEN
        SET v_db_err_msg = CONCAT('Unknown database ', in_db_name);
        SIGNAL SQLSTATE 'HY000'
            SET MESSAGE_TEXT = v_db_err_msg;
    END IF;

-- Check if a database of the synonym name already exists
    SELECT SCHEMA_NAME INTO v_db_name_check
      FROM INFORMATION_SCHEMA.SCHEMATA
     WHERE SCHEMA_NAME = in_synonym;

IF v_db_name_check = in_synonym THEN
        SET v_db_err_msg = CONCAT('Can\'t create database ', in_synonym, '; database exists');
        SIGNAL SQLSTATE 'HY000'
            SET MESSAGE_TEXT = v_db_err_msg;
    END IF;

-- All good, create the database and views
    SET @create_db_stmt := CONCAT('CREATE DATABASE ', sys.quote_identifier(in_synonym));
    PREPARE create_db_stmt FROM @create_db_stmt;
    EXECUTE create_db_stmt;
    DEALLOCATE PREPARE create_db_stmt;

SET v_done = FALSE;
    OPEN c_table_names;
    c_table_names: LOOP
        FETCH c_table_names INTO v_table;
        IF v_done THEN
            LEAVE c_table_names;
        END IF;

-- Check does temporary table shadows the base table. If it is so, terminate.
        CALL sys.table_exists(in_db_name, v_table, v_table_exists);
        IF (v_table_exists = 'TEMPORARY') THEN
            SET v_temp_table =
            CONCAT(
                'Table',
                 sys.quote_identifier(in_db_name),
                 '.',
                 sys.quote_identifier(v_table),
                 'shadows base table. View cannot be created! Terminating!');
             SIGNAL SQLSTATE 'HY000'
                 SET MESSAGE_TEXT = v_temp_table;
             LEAVE c_table_names;
        END IF;

SET @create_view_stmt = CONCAT(
            'CREATE SQL SECURITY INVOKER VIEW ',
            sys.quote_identifier(in_synonym),
            '.',
            sys.quote_identifier(v_table),
            ' AS SELECT * FROM ',
            sys.quote_identifier(in_db_name),
            '.',
            sys.quote_identifier(v_table)
        );
        PREPARE create_view_stmt FROM @create_view_stmt;
        EXECUTE create_view_stmt;
        DEALLOCATE PREPARE create_view_stmt;

SET v_views_created = v_views_created + 1;
    END LOOP;
    CLOSE c_table_names;

SELECT CONCAT(
        'Created ', v_views_created, ' view',
        IF(v_views_created != 1, 's', ''), ' in the ',
        sys.quote_identifier(in_synonym), ' database'
    ) AS summary;

END$$

DELIMITER ;

--  Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
-- 
--  This program is free software; you can redistribute it and/or modify
--  it under the terms of the GNU General Public License as published by
--  the Free Software Foundation; version 2 of the License.
-- 
--  This program is distributed in the hope that it will be useful,
--  but WITHOUT ANY WARRANTY; without even the implied warranty of
--  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
--  GNU General Public License for more details.
-- 
--  You should have received a copy of the GNU General Public License
--  along with this program; if not, write to the Free Software
--  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

DROP PROCEDURE IF EXISTS execute_prepared_stmt;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' PROCEDURE execute_prepared_stmt (
        IN in_query longtext CHARACTER SET UTF8
    )
    COMMENT '
             Description
             -----------

Takes the query in the argument and executes it using a prepared statement. The prepared statement is deallocated,
             so the procedure is mainly useful for executing one off dynamically created queries.

The sys_execute_prepared_stmt prepared statement name is used for the query and is required not to exist.

Parameters
             -----------

in_query (longtext CHARACTER SET UTF8):
               The query to execute.

Configuration Options
             ----------------------

sys.debug
               Whether to provide debugging output.
               Default is ''OFF''. Set to ''ON'' to include.

Example
             --------

Query OK, 0 rows affected (0.00 sec)
            '
    SQL SECURITY INVOKER
    NOT DETERMINISTIC
    READS SQL DATA
BEGIN
    -- Set configuration options
    IF (@sys.debug IS NULL) THEN
        SET @sys.debug = sys.sys_get_config('debug', 'OFF');
    END IF;

-- Verify the query exists
    -- The shortest possible query is "DO 1"
    IF (in_query IS NULL OR LENGTH(in_query) < 4) THEN
       SIGNAL SQLSTATE '45000'
          SET MESSAGE_TEXT = "The @sys.execute_prepared_stmt.sql must contain a query";
    END IF;

SET @sys.execute_prepared_stmt.sql = in_query;

IF (@sys.debug = 'ON') THEN
        SELECT @sys.execute_prepared_stmt.sql AS 'Debug';
    END IF;
    PREPARE sys_execute_prepared_stmt FROM @sys.execute_prepared_stmt.sql;
    EXECUTE sys_execute_prepared_stmt;
    DEALLOCATE PREPARE sys_execute_prepared_stmt;

SET @sys.execute_prepared_stmt.sql = NULL;
END$$

DELIMITER ;

--  Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
-- 
--  This program is free software; you can redistribute it and/or modify
--  it under the terms of the GNU General Public License as published by
--  the Free Software Foundation; version 2 of the License.
-- 
--  This program is distributed in the hope that it will be useful,
--  but WITHOUT ANY WARRANTY; without even the implied warranty of
--  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
--  GNU General Public License for more details.
-- 
--  You should have received a copy of the GNU General Public License
--  along with this program; if not, write to the Free Software
--  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

DROP PROCEDURE IF EXISTS diagnostics;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' PROCEDURE diagnostics (
        IN in_max_runtime int unsigned, IN in_interval int unsigned,
        IN in_auto_config enum ('current', 'medium', 'full')
    )
    COMMENT '
             Description
             -----------

Create a report of the current status of the server for diagnostics purposes. Data collected includes (some items depends on versions and settings):

* The GLOBAL VARIABLES
                * Several sys schema views including metrics or equivalent (depending on version and settings)
                * Queries in the 95th percentile
                * Several ndbinfo views for MySQL Cluster
                * Replication (both master and slave) information.

Some of the sys schema views are calculated as initial (optional), overall, delta:

* The initial view is the content of the view at the start of this procedure.
                  This output will be the same as the the start values used for the delta view.
                  The initial view is included if @sys.diagnostics.include_raw = ''ON''.
                * The overall view is the content of the view at the end of this procedure.
                  This output is the same as the end values used for the delta view.
                  The overall view is always included.
                * The delta view is the difference from the beginning to the end. Note that for min and max values
                  they are simply the min or max value from the end view respectively, so does not necessarily reflect
                  the minimum/maximum value in the monitored period.
                  Note: except for the metrics views the delta is only calculation between the first and last outputs.
             
             Requires the SUPER privilege for "SET sql_log_bin = 0;".

Versions supported:
                * MySQL 5.6: 5.6.10 and later
                * MySQL 5.7: 5.7.9 and later

Parameters
             -----------

in_max_runtime (INT UNSIGNED):
               The maximum time to keep collecting data.
               Use NULL to get the default which is 60 seconds, otherwise enter a value greater than 0.
             in_interval (INT UNSIGNED):
               How long to sleep between data collections.
               Use NULL to get the default which is 30 seconds, otherwise enter a value greater than 0.
             in_auto_config (ENUM(''current'', ''medium'', ''full''))
               Automatically enable Performance Schema instruments and consumers.
               NOTE: The more that are enabled, the more impact on the performance.
               Supported values are:
                  * current - use the current settings.
                  * medium - enable some settings.
                  * full - enables all settings. This will have a big impact on the
                           performance - be careful using this option.
               If another setting the ''current'' is chosen, the current settings
               are restored at the end of the procedure.

Configuration Options
             ----------------------

sys.diagnostics.allow_i_s_tables
               Specifies whether it is allowed to do table scan queries on information_schema.TABLES. This can be expensive if there
               are many tables. Set to ''ON'' to allow, ''OFF'' to not allow.
               Default is ''OFF''.

sys.diagnostics.include_raw
               Set to ''ON'' to include the raw data (e.g. the original output of "SELECT * FROM sys.metrics").
               Use this to get the initial values of the various views.
               Default is ''OFF''.

sys.statement_truncate_len
               How much of queries in the process list output to include.
               Default is 64.

sys.debug
               Whether to provide debugging output.
               Default is ''OFF''. Set to ''ON'' to include.

Example
             --------

To create a report and append it to the file diag.out:

mysql> TEE diag.out;
             mysql> CALL sys.diagnostics(120, 30, ''current'');
             ...
             mysql> NOTEE;
            '
    SQL SECURITY INVOKER
    NOT DETERMINISTIC
    READS SQL DATA
BEGIN
    DECLARE v_start, v_runtime, v_iter_start, v_sleep DECIMAL(20,2) DEFAULT 0.0;
    DECLARE v_has_innodb, v_has_ndb, v_has_ps, v_has_replication, v_has_ps_replication VARCHAR(8) CHARSET utf8 DEFAULT 'NO';
    DECLARE v_this_thread_enabled, v_has_ps_vars, v_has_metrics ENUM('YES', 'NO');
    DECLARE v_table_name, v_banner VARCHAR(64) CHARSET utf8;
    DECLARE v_sql_status_summary_select, v_sql_status_summary_delta, v_sql_status_summary_from, v_no_delta_names TEXT;
    DECLARE v_output_time, v_output_time_prev DECIMAL(20,3) UNSIGNED;
    DECLARE v_output_count, v_count, v_old_group_concat_max_len INT UNSIGNED DEFAULT 0;
    -- The width of each of the status outputs in the summery
    DECLARE v_status_summary_width TINYINT UNSIGNED DEFAULT 50;
    DECLARE v_done BOOLEAN DEFAULT FALSE;
    -- Do not include the following ndbinfo views:
    --    'blocks'                    Static
    --    'config_params'             Static
    --    'dict_obj_types'            Static
    --    'disk_write_speed_base'     Can generate lots of output - only include aggregate views here
    --    'memory_per_fragment'       Can generate lots of output
    --    'memoryusage'               Handled separately
    --    'operations_per_fragment'   Can generate lots of output
    --    'threadblocks'              Only needed once
    DECLARE c_ndbinfo CURSOR FOR
        SELECT TABLE_NAME
          FROM information_schema.TABLES
         WHERE TABLE_SCHEMA = 'ndbinfo'
               AND TABLE_NAME NOT IN (
                  'blocks',
                  'config_params',
                  'dict_obj_types',
                  'disk_write_speed_base',
                  'memory_per_fragment',
                  'memoryusage',
                  'operations_per_fragment',
                  'threadblocks'
               );
    DECLARE c_sysviews_w_delta CURSOR FOR
        SELECT table_name
          FROM tmp_sys_views_delta
         ORDER BY table_name; 
    DECLARE CONTINUE HANDLER FOR NOT FOUND SET v_done = TRUE;

-- Do not track the current thread - no reason to clutter the output
    SELECT INSTRUMENTED INTO v_this_thread_enabled FROM performance_schema.threads WHERE PROCESSLIST_ID = CONNECTION_ID();
    IF (v_this_thread_enabled = 'YES') THEN
        CALL sys.ps_setup_disable_thread(CONNECTION_ID());
    END IF;

-- Check options are sane
    IF (in_max_runtime < in_interval) THEN
        SIGNAL SQLSTATE '45000'
           SET MESSAGE_TEXT = 'in_max_runtime must be greater than or equal to in_interval';
    END IF;
    IF (in_max_runtime = 0) THEN
        SIGNAL SQLSTATE '45000'
           SET MESSAGE_TEXT = 'in_max_runtime must be greater than 0';
    END IF;
    IF (in_interval = 0) THEN
        SIGNAL SQLSTATE '45000'
           SET MESSAGE_TEXT = 'in_interval must be greater than 0';
    END IF;

-- Set configuration options
    IF (@sys.diagnostics.allow_i_s_tables IS NULL) THEN
        SET @sys.diagnostics.allow_i_s_tables = sys.sys_get_config('diagnostics.allow_i_s_tables', 'OFF');
    END IF;
    IF (@sys.diagnostics.include_raw IS NULL) THEN
        SET @sys.diagnostics.include_raw      = sys.sys_get_config('diagnostics.include_raw'     , 'OFF');
    END IF;
    IF (@sys.debug IS NULL) THEN
        SET @sys.debug                        = sys.sys_get_config('debug'                       , 'OFF');
    END IF;
    IF (@sys.statement_truncate_len IS NULL) THEN
        SET @sys.statement_truncate_len       = sys.sys_get_config('statement_truncate_len'      , '64' );
    END IF;

-- Temporary table are used - disable sql_log_bin if necessary to prevent them replicating
    SET @log_bin := @@sql_log_bin;
    IF (@log_bin = 1) THEN
        SET sql_log_bin = 0;
    END IF;

-- Some metrics variables doesn't make sense in delta and rate calculations even if they are numeric
    -- as they really are more like settings or "current" status.
    SET v_no_delta_names = CONCAT('s%{COUNT}.Variable_name NOT IN (',
        '''innodb_buffer_pool_pages_total'', ',
        '''innodb_page_size'', ',
        '''last_query_cost'', ',
        '''last_query_partial_plans'', ',
        '''qcache_total_blocks'', ',
        '''slave_last_heartbeat'', ',
        '''ssl_ctx_verify_depth'', ',
        '''ssl_ctx_verify_mode'', ',
        '''ssl_session_cache_size'', ',
        '''ssl_verify_depth'', ',
        '''ssl_verify_mode'', ',
        '''ssl_version'', ',
        '''buffer_flush_lsn_avg_rate'', ',
        '''buffer_flush_pct_for_dirty'', ',
        '''buffer_flush_pct_for_lsn'', ',
        '''buffer_pool_pages_total'', ',
        '''lock_row_lock_time_avg'', ',
        '''lock_row_lock_time_max'', ',
        '''innodb_page_size''',
    ')');

IF (in_auto_config <> 'current') THEN
        IF (@sys.debug = 'ON') THEN
            SELECT CONCAT('Updating Performance Schema configuration to ', in_auto_config) AS 'Debug';
        END IF;
        CALL sys.ps_setup_save(0);

IF (in_auto_config = 'medium') THEN
            -- Enable all consumers except %history and %history_long
            UPDATE performance_schema.setup_consumers
                SET ENABLED = 'YES'
            WHERE NAME NOT LIKE '%\_history%';

-- Enable all instruments except wait/synch/%
            UPDATE performance_schema.setup_instruments
                SET ENABLED = 'YES',
                    TIMED   = 'YES'
            WHERE NAME NOT LIKE 'wait/synch/%';
        ELSEIF (in_auto_config = 'full') THEN
            UPDATE performance_schema.setup_consumers
                SET ENABLED = 'YES';

UPDATE performance_schema.setup_instruments
                SET ENABLED = 'YES',
                    TIMED   = 'YES';
        END IF;

-- Enable all threads except this one
        UPDATE performance_schema.threads
           SET INSTRUMENTED = 'YES'
         WHERE PROCESSLIST_ID <> CONNECTION_ID();
    END IF;

SET v_start        = UNIX_TIMESTAMP(NOW(2)),
        in_interval    = IFNULL(in_interval, 30),
        in_max_runtime = IFNULL(in_max_runtime, 60);

-- Get a quick ref with hostname, server UUID, and the time for the report.
    SET v_banner = REPEAT(
                      '-',
                      LEAST(
                         GREATEST(
                            36,
                            CHAR_LENGTH(VERSION()),
                            CHAR_LENGTH(@@global.version_comment),
                            CHAR_LENGTH(@@global.version_compile_os),
                            CHAR_LENGTH(@@global.version_compile_machine),
                            CHAR_LENGTH(@@global.socket),
                            CHAR_LENGTH(@@global.datadir)
                         ),
                         64
                      )
                   );
    SELECT 'Hostname' AS 'Name', @@global.hostname AS 'Value'
    UNION ALL
    SELECT 'Port' AS 'Name', @@global.port AS 'Value'
    UNION ALL
    SELECT 'Socket' AS 'Name', @@global.socket AS 'Value'
    UNION ALL
    SELECT 'Datadir' AS 'Name', @@global.datadir AS 'Value'
    UNION ALL
    SELECT REPEAT('-', 23) AS 'Name', v_banner AS 'Value'
    UNION ALL
    SELECT 'MySQL Version' AS 'Name', VERSION() AS 'Value'
    UNION ALL
    SELECT 'Sys Schema Version' AS 'Name', (SELECT sys_version FROM sys.version) AS 'Value'
    UNION ALL
    SELECT 'Version Comment' AS 'Name', @@global.version_comment AS 'Value'
    UNION ALL
    SELECT 'Version Compile OS' AS 'Name', @@global.version_compile_os AS 'Value'
    UNION ALL
    SELECT 'Version Compile Machine' AS 'Name', @@global.version_compile_machine AS 'Value'
    UNION ALL
    SELECT REPEAT('-', 23) AS 'Name', v_banner AS 'Value'
    UNION ALL
    SELECT 'UTC Time' AS 'Name', UTC_TIMESTAMP() AS 'Value'
    UNION ALL
    SELECT 'Local Time' AS 'Name', NOW() AS 'Value'
    UNION ALL
    SELECT 'Time Zone' AS 'Name', @@global.time_zone AS 'Value'
    UNION ALL
    SELECT 'System Time Zone' AS 'Name', @@global.system_time_zone AS 'Value'
    UNION ALL
    SELECT 'Time Zone Offset' AS 'Name', TIMEDIFF(NOW(), UTC_TIMESTAMP()) AS 'Value';

-- Are the InnoDB, NDBCluster, and Performance Schema storage engines present?
    SET v_has_innodb         = IFNULL((SELECT SUPPORT FROM information_schema.ENGINES WHERE ENGINE = 'InnoDB'), 'NO'),
        v_has_ndb            = IFNULL((SELECT SUPPORT FROM information_schema.ENGINES WHERE ENGINE = 'NDBCluster'), 'NO'),
        v_has_ps             = IFNULL((SELECT SUPPORT FROM information_schema.ENGINES WHERE ENGINE = 'PERFORMANCE_SCHEMA'), 'NO'),
        v_has_ps_replication = IF(v_has_ps = 'YES'
                                   AND EXISTS(SELECT 1 FROM information_schema.TABLES WHERE TABLE_SCHEMA = 'performance_schema' AND TABLE_NAME = 'replication_applier_status'),
                                   'YES',
                                   'NO'
                               ),
        v_has_replication    = 'MAYBE',
        v_has_metrics        = IF(v_has_ps = 'YES' OR (sys.version_major() = 5 AND sys.version_minor() = 6), 'YES', 'NO'),
        v_has_ps_vars        = 'NO';

-- 5.7.7 introduced the possibility to get SHOW [GLOBAL|SESSION] VARIABLES and SHOW [GLOBAL|SESSION] STATUS
    -- from the Performance Schema. But it's optional whether it's enabled.
    -- 5.7.9 changes so the Performance Schema tables always work.
    -- Note that @@global.show_compatibility_56 = OFF will only actually work if the Performance Schema is enabled in <=5.7.8,
    -- however except overriding the global value there is nothing that can be done about it.
    -- v_has_ps_vars defaults to NO
    /*!50707 SET v_has_ps_vars = IF(@@global.show_compatibility_56, 'NO', 'YES');*/
    /*!50709 SET v_has_ps_vars = 'YES';*/

IF (@sys.debug = 'ON') THEN
       SELECT v_has_innodb AS 'Has_InnoDB', v_has_ndb AS 'Has_NDBCluster',
              v_has_ps AS 'Has_Performance_Schema', v_has_ps_vars AS 'Has_P_S_SHOW_Variables',
              v_has_metrics AS 'Has_metrics',
              v_has_ps_replication 'AS Has_P_S_Replication', v_has_replication AS 'Has_Replication';
    END IF;

IF (v_has_innodb IN ('DEFAULT', 'YES')) THEN
        -- Need to use prepared statement as just having the query as a plain command
        -- will generate an error if the InnoDB storage engine is not present
        SET @sys.diagnostics.sql = 'SHOW ENGINE InnoDB STATUS';
        PREPARE stmt_innodb_status FROM @sys.diagnostics.sql;
    END IF;

IF (v_has_ps = 'YES') THEN
        -- Need to use prepared statement as just having the query as a plain command
        -- will generate an error if the InnoDB storage engine is not present
        SET @sys.diagnostics.sql = 'SHOW ENGINE PERFORMANCE_SCHEMA STATUS';
        PREPARE stmt_ps_status FROM @sys.diagnostics.sql;
    END IF;

IF (v_has_ndb IN ('DEFAULT', 'YES')) THEN
        -- Need to use prepared statement as just having the query as a plain command
        -- will generate an error if the NDBCluster storage engine is not present
        SET @sys.diagnostics.sql = 'SHOW ENGINE NDBCLUSTER STATUS';
        PREPARE stmt_ndbcluster_status FROM @sys.diagnostics.sql;
    END IF;

SET @sys.diagnostics.sql_gen_query_template = 'SELECT CONCAT(
           ''SELECT '',
           GROUP_CONCAT(
               CASE WHEN (SUBSTRING(TABLE_NAME, 3), COLUMN_NAME) IN (
                                (''io_global_by_file_by_bytes'', ''total''),
                                (''io_global_by_wait_by_bytes'', ''total_requested'')
                         )
                         THEN CONCAT(''sys.format_bytes('', COLUMN_NAME, '') AS '', COLUMN_NAME)
                    WHEN SUBSTRING(COLUMN_NAME, -8) = ''_latency''
                         THEN CONCAT(''sys.format_time('', COLUMN_NAME, '') AS '', COLUMN_NAME)
                    WHEN SUBSTRING(COLUMN_NAME, -7) = ''_memory'' OR SUBSTRING(COLUMN_NAME, -17) = ''_memory_allocated''
                         OR ((SUBSTRING(COLUMN_NAME, -5) = ''_read'' OR SUBSTRING(COLUMN_NAME, -8) = ''_written'' OR SUBSTRING(COLUMN_NAME, -6) = ''_write'') AND SUBSTRING(COLUMN_NAME, 1, 6) <> ''COUNT_'')
                         THEN CONCAT(''sys.format_bytes('', COLUMN_NAME, '') AS '', COLUMN_NAME)
                    ELSE COLUMN_NAME
               END
               ORDER BY ORDINAL_POSITION
               SEPARATOR '',\n       ''
           ),
           ''\n  FROM tmp_'', SUBSTRING(TABLE_NAME FROM 3), ''_%{OUTPUT}''
       ) AS Query INTO @sys.diagnostics.sql_select
  FROM information_schema.COLUMNS
 WHERE TABLE_SCHEMA = ''sys'' AND TABLE_NAME = ?
 GROUP BY TABLE_NAME';

SET @sys.diagnostics.sql_gen_query_delta = 'SELECT CONCAT(
           ''SELECT '',
           GROUP_CONCAT(
               CASE WHEN FIND_IN_SET(COLUMN_NAME, diag.pk)
                         THEN COLUMN_NAME
                    WHEN diag.TABLE_NAME = ''io_global_by_file_by_bytes'' AND COLUMN_NAME = ''write_pct''
                         THEN CONCAT(''IFNULL(ROUND(100-(((e.total_read-IFNULL(s.total_read, 0))'',
                                     ''/NULLIF(((e.total_read-IFNULL(s.total_read, 0))+(e.total_written-IFNULL(s.total_written, 0))), 0))*100), 2), 0.00) AS '',
                                     COLUMN_NAME)
                    WHEN (diag.TABLE_NAME, COLUMN_NAME) IN (
                                (''io_global_by_file_by_bytes'', ''total''),
                                (''io_global_by_wait_by_bytes'', ''total_requested'')
                         )
                         THEN CONCAT(''sys.format_bytes(e.'', COLUMN_NAME, ''-IFNULL(s.'', COLUMN_NAME, '', 0)) AS '', COLUMN_NAME)
                    WHEN SUBSTRING(COLUMN_NAME, 1, 4) IN (''max_'', ''min_'') AND SUBSTRING(COLUMN_NAME, -8) = ''_latency''
                         THEN CONCAT(''sys.format_time(e.'', COLUMN_NAME, '') AS '', COLUMN_NAME)
                    WHEN COLUMN_NAME = ''avg_latency''
                         THEN CONCAT(''sys.format_time((e.total_latency - IFNULL(s.total_latency, 0))'',
                                     ''/NULLIF(e.total - IFNULL(s.total, 0), 0)) AS '', COLUMN_NAME)
                    WHEN SUBSTRING(COLUMN_NAME, -12) = ''_avg_latency''
                         THEN CONCAT(''sys.format_time((e.'', SUBSTRING(COLUMN_NAME FROM 1 FOR CHAR_LENGTH(COLUMN_NAME)-12), ''_latency - IFNULL(s.'', SUBSTRING(COLUMN_NAME FROM 1 FOR CHAR_LENGTH(COLUMN_NAME)-12), ''_latency, 0))'',
                                     ''/NULLIF(e.'', SUBSTRING(COLUMN_NAME FROM 1 FOR CHAR_LENGTH(COLUMN_NAME)-12), ''s - IFNULL(s.'', SUBSTRING(COLUMN_NAME FROM 1 FOR CHAR_LENGTH(COLUMN_NAME)-12), ''s, 0), 0)) AS '', COLUMN_NAME)
                    WHEN SUBSTRING(COLUMN_NAME, -8) = ''_latency''
                         THEN CONCAT(''sys.format_time(e.'', COLUMN_NAME, '' - IFNULL(s.'', COLUMN_NAME, '', 0)) AS '', COLUMN_NAME)
                    WHEN COLUMN_NAME IN (''avg_read'', ''avg_write'', ''avg_written'')
                         THEN CONCAT(''sys.format_bytes(IFNULL((e.total_'', IF(COLUMN_NAME = ''avg_read'', ''read'', ''written''), ''-IFNULL(s.total_'', IF(COLUMN_NAME = ''avg_read'', ''read'', ''written''), '', 0))'',
                                     ''/NULLIF(e.count_'', IF(COLUMN_NAME = ''avg_read'', ''read'', ''write''), ''-IFNULL(s.count_'', IF(COLUMN_NAME = ''avg_read'', ''read'', ''write''), '', 0), 0), 0)) AS '',
                                     COLUMN_NAME)
                    WHEN SUBSTRING(COLUMN_NAME, -7) = ''_memory'' OR SUBSTRING(COLUMN_NAME, -17) = ''_memory_allocated''
                         OR ((SUBSTRING(COLUMN_NAME, -5) = ''_read'' OR SUBSTRING(COLUMN_NAME, -8) = ''_written'' OR SUBSTRING(COLUMN_NAME, -6) = ''_write'') AND SUBSTRING(COLUMN_NAME, 1, 6) <> ''COUNT_'')
                         THEN CONCAT(''sys.format_bytes(e.'', COLUMN_NAME, '' - IFNULL(s.'', COLUMN_NAME, '', 0)) AS '', COLUMN_NAME)
                    ELSE CONCAT(''(e.'', COLUMN_NAME, '' - IFNULL(s.'', COLUMN_NAME, '', 0)) AS '', COLUMN_NAME)
               END
               ORDER BY ORDINAL_POSITION
               SEPARATOR '',\n       ''
           ),
           ''\n  FROM tmp_'', diag.TABLE_NAME, ''_end e
       LEFT OUTER JOIN tmp_'', diag.TABLE_NAME, ''_start s USING ('', diag.pk, '')''
       ) AS Query INTO @sys.diagnostics.sql_select
  FROM tmp_sys_views_delta diag
       INNER JOIN information_schema.COLUMNS c ON c.TABLE_NAME = CONCAT(''x$'', diag.TABLE_NAME)
 WHERE c.TABLE_SCHEMA = ''sys'' AND diag.TABLE_NAME = ?
 GROUP BY diag.TABLE_NAME';

IF (v_has_ps = 'YES') THEN
        -- Create temporary table with the ORDER BY clauses. Will be required both for the initial (if included) and end queries
        DROP TEMPORARY TABLE IF EXISTS tmp_sys_views_delta;
        CREATE TEMPORARY TABLE tmp_sys_views_delta (
            TABLE_NAME varchar(64) NOT NULL,
            order_by text COMMENT 'ORDER BY clause for the initial and overall views',
            order_by_delta text COMMENT 'ORDER BY clause for the delta views',
            where_delta text COMMENT 'WHERE clause to use for delta views to only include rows with a "count" > 0',
            limit_rows int unsigned COMMENT 'The maximum number of rows to include for the view',
            pk varchar(128) COMMENT 'Used with the FIND_IN_SET() function so use comma separated list without whitespace',
            PRIMARY KEY (TABLE_NAME)
        );

-- %{OUTPUT} will be replace by the suffix used for the output.
        IF (@sys.debug = 'ON') THEN
            SELECT 'Populating tmp_sys_views_delta' AS 'Debug';
        END IF;
        INSERT INTO tmp_sys_views_delta
        VALUES ('host_summary'                       , '%{TABLE}.statement_latency DESC',
                                                       '(e.statement_latency-IFNULL(s.statement_latency, 0)) DESC',
                                                       '(e.statements - IFNULL(s.statements, 0)) > 0', NULL, 'host'),
               ('host_summary_by_file_io'            , '%{TABLE}.io_latency DESC',
                                                       '(e.io_latency-IFNULL(s.io_latency, 0)) DESC',
                                                       '(e.ios - IFNULL(s.ios, 0)) > 0', NULL, 'host'),
               ('host_summary_by_file_io_type'       , '%{TABLE}.host, %{TABLE}.total_latency DESC',
                                                       'e.host, (e.total_latency-IFNULL(s.total_latency, 0)) DESC',
                                                       '(e.total - IFNULL(s.total, 0)) > 0', NULL, 'host,event_name'),
               ('host_summary_by_stages'             , '%{TABLE}.host, %{TABLE}.total_latency DESC',
                                                       'e.host, (e.total_latency-IFNULL(s.total_latency, 0)) DESC',
                                                       '(e.total - IFNULL(s.total, 0)) > 0', NULL, 'host,event_name'),
               ('host_summary_by_statement_latency'  , '%{TABLE}.total_latency DESC',
                                                       '(e.total_latency-IFNULL(s.total_latency, 0)) DESC',
                                                       '(e.total - IFNULL(s.total, 0)) > 0', NULL, 'host'),
               ('host_summary_by_statement_type'     , '%{TABLE}.host, %{TABLE}.total_latency DESC',
                                                       'e.host, (e.total_latency-IFNULL(s.total_latency, 0)) DESC',
                                                       '(e.total - IFNULL(s.total, 0)) > 0', NULL, 'host,statement'),
               ('io_by_thread_by_latency'            , '%{TABLE}.total_latency DESC',
                                                       '(e.total_latency-IFNULL(s.total_latency, 0)) DESC',
                                                       '(e.total - IFNULL(s.total, 0)) > 0', NULL, 'user,thread_id,processlist_id'),
               ('io_global_by_file_by_bytes'         , '%{TABLE}.total DESC',
                                                       '(e.total-IFNULL(s.total, 0)) DESC',
                                                       '(e.total - IFNULL(s.total, 0)) > 0', 100, 'file'),
               ('io_global_by_file_by_latency'       , '%{TABLE}.total_latency DESC',
                                                       '(e.total_latency-IFNULL(s.total_latency, 0)) DESC',
                                                       '(e.total - IFNULL(s.total, 0)) > 0', 100, 'file'),
               ('io_global_by_wait_by_bytes'         , '%{TABLE}.total_requested DESC',
                                                       '(e.total_requested-IFNULL(s.total_requested, 0)) DESC',
                                                       '(e.total - IFNULL(s.total, 0)) > 0', NULL, 'event_name'),
               ('io_global_by_wait_by_latency'       , '%{TABLE}.total_latency DESC',
                                                       '(e.total_latency-IFNULL(s.total_latency, 0)) DESC',
                                                       '(e.total - IFNULL(s.total, 0)) > 0', NULL, 'event_name'),
               ('schema_index_statistics'            , '(%{TABLE}.select_latency+%{TABLE}.insert_latency+%{TABLE}.update_latency+%{TABLE}.delete_latency) DESC',
                                                       '((e.select_latency+e.insert_latency+e.update_latency+e.delete_latency)-IFNULL(s.select_latency+s.insert_latency+s.update_latency+s.delete_latency, 0)) DESC',
                                                       '((e.rows_selected+e.insert_latency+e.rows_updated+e.rows_deleted)-IFNULL(s.rows_selected+s.rows_inserted+s.rows_updated+s.rows_deleted, 0)) > 0',
                                                       100, 'table_schema,table_name,index_name'),
               ('schema_table_statistics'            , '%{TABLE}.total_latency DESC',
                                                       '(e.total_latency-IFNULL(s.total_latency, 0)) DESC',
                                                       '(e.total_latency-IFNULL(s.total_latency, 0)) > 0', 100, 'table_schema,table_name'),
               ('schema_tables_with_full_table_scans', '%{TABLE}.rows_full_scanned DESC',
                                                       '(e.rows_full_scanned-IFNULL(s.rows_full_scanned, 0)) DESC',
                                                       '(e.rows_full_scanned-IFNULL(s.rows_full_scanned, 0)) > 0', 100, 'object_schema,object_name'),
               ('user_summary'                       , '%{TABLE}.statement_latency DESC',
                                                       '(e.statement_latency-IFNULL(s.statement_latency, 0)) DESC',
                                                       '(e.statements - IFNULL(s.statements, 0)) > 0', NULL, 'user'),
               ('user_summary_by_file_io'            , '%{TABLE}.io_latency DESC',
                                                       '(e.io_latency-IFNULL(s.io_latency, 0)) DESC',
                                                       '(e.ios - IFNULL(s.ios, 0)) > 0', NULL, 'user'),
               ('user_summary_by_file_io_type'       , '%{TABLE}.user, %{TABLE}.latency DESC',
                                                       'e.user, (e.latency-IFNULL(s.latency, 0)) DESC',
                                                       '(e.total - IFNULL(s.total, 0)) > 0', NULL, 'user,event_name'),
               ('user_summary_by_stages'             , '%{TABLE}.user, %{TABLE}.total_latency DESC',
                                                       'e.user, (e.total_latency-IFNULL(s.total_latency, 0)) DESC',
                                                       '(e.total - IFNULL(s.total, 0)) > 0', NULL, 'user,event_name'),
               ('user_summary_by_statement_latency'  , '%{TABLE}.total_latency DESC',
                                                       '(e.total_latency-IFNULL(s.total_latency, 0)) DESC',
                                                       '(e.total - IFNULL(s.total, 0)) > 0', NULL, 'user'),
               ('user_summary_by_statement_type'     , '%{TABLE}.user, %{TABLE}.total_latency DESC',
                                                       'e.user, (e.total_latency-IFNULL(s.total_latency, 0)) DESC',
                                                       '(e.total - IFNULL(s.total, 0)) > 0', NULL, 'user,statement'),
               ('wait_classes_global_by_avg_latency' , 'IFNULL(%{TABLE}.total_latency / NULLIF(%{TABLE}.total, 0), 0) DESC',
                                                       'IFNULL((e.total_latency-IFNULL(s.total_latency, 0)) / NULLIF((e.total - IFNULL(s.total, 0)), 0), 0) DESC',
                                                       '(e.total - IFNULL(s.total, 0)) > 0', NULL, 'event_class'),
               ('wait_classes_global_by_latency'     , '%{TABLE}.total_latency DESC',
                                                       '(e.total_latency-IFNULL(s.total_latency, 0)) DESC',
                                                       '(e.total - IFNULL(s.total, 0)) > 0', NULL, 'event_class'),
               ('waits_by_host_by_latency'           , '%{TABLE}.host, %{TABLE}.total_latency DESC',
                                                       'e.host, (e.total_latency-IFNULL(s.total_latency, 0)) DESC',
                                                       '(e.total - IFNULL(s.total, 0)) > 0', NULL, 'host,event'),
               ('waits_by_user_by_latency'           , '%{TABLE}.user, %{TABLE}.total_latency DESC',
                                                       'e.user, (e.total_latency-IFNULL(s.total_latency, 0)) DESC',
                                                       '(e.total - IFNULL(s.total, 0)) > 0', NULL, 'user,event'),
               ('waits_global_by_latency'            , '%{TABLE}.total_latency DESC',
                                                       '(e.total_latency-IFNULL(s.total_latency, 0)) DESC',
                                                       '(e.total - IFNULL(s.total, 0)) > 0', NULL, 'events')
        ;
    END IF;

SELECT '

=======================

Configuration

=======================

' AS '';
    -- Get the configuration.
    SELECT 'GLOBAL VARIABLES' AS 'The following output is:';
    IF (v_has_ps_vars = 'YES') THEN
        SELECT LOWER(VARIABLE_NAME) AS Variable_name, VARIABLE_VALUE AS Variable_value FROM performance_schema.global_variables ORDER BY VARIABLE_NAME;
    ELSE
        SELECT LOWER(VARIABLE_NAME) AS Variable_name, VARIABLE_VALUE AS Variable_value FROM information_schema.GLOBAL_VARIABLES ORDER BY VARIABLE_NAME;
    END IF;

IF (v_has_ps = 'YES') THEN
        -- Overview of the Performance Schema dynamic settings used for this report.
        SELECT 'Performance Schema Setup - Actors' AS 'The following output is:';
        SELECT * FROM performance_schema.setup_actors;

SELECT 'Performance Schema Setup - Consumers' AS 'The following output is:';
        SELECT NAME AS Consumer, ENABLED, sys.ps_is_consumer_enabled(NAME) AS COLLECTS
          FROM performance_schema.setup_consumers;

SELECT 'Performance Schema Setup - Instruments' AS 'The following output is:';
        SELECT SUBSTRING_INDEX(NAME, '/', 2) AS 'InstrumentClass',
               ROUND(100*SUM(IF(ENABLED = 'YES', 1, 0))/COUNT(*), 2) AS 'EnabledPct',
               ROUND(100*SUM(IF(TIMED = 'YES', 1, 0))/COUNT(*), 2) AS 'TimedPct'
          FROM performance_schema.setup_instruments
         GROUP BY SUBSTRING_INDEX(NAME, '/', 2)
         ORDER BY SUBSTRING_INDEX(NAME, '/', 2);

SELECT 'Performance Schema Setup - Objects' AS 'The following output is:';
        SELECT * FROM performance_schema.setup_objects;

SELECT 'Performance Schema Setup - Threads' AS 'The following output is:';
        SELECT `TYPE` AS ThreadType, COUNT(*) AS 'Total', ROUND(100*SUM(IF(INSTRUMENTED = 'YES', 1, 0))/COUNT(*), 2) AS 'InstrumentedPct'
          FROM performance_schema.threads
        GROUP BY TYPE;
    END IF;

IF (v_has_replication = 'NO') THEN
        SELECT 'No Replication Configured' AS 'Replication Status';
    ELSE
        -- No guarantee that replication is actually configured, but we can't really know
        SELECT CONCAT('Replication Configured: ', v_has_replication, ' - Performance Schema Replication Tables: ', v_has_ps_replication) AS 'Replication Status';
        
        IF (v_has_ps_replication = 'YES') THEN
            SELECT 'Replication - Connection Configuration' AS 'The following output is:';
            SELECT * FROM performance_schema.replication_connection_configuration/*!50706 ORDER BY CHANNEL_NAME*/;
        END IF;
        
        IF (v_has_ps_replication = 'YES') THEN
            SELECT 'Replication - Applier Configuration' AS 'The following output is:';
            SELECT * FROM performance_schema.replication_applier_configuration ORDER BY CHANNEL_NAME;
        END IF;
    END IF;

IF (v_has_ndb IN ('DEFAULT', 'YES')) THEN
       SELECT 'Cluster Thread Blocks' AS 'The following output is:';
       SELECT * FROM ndbinfo.threadblocks;
    END IF;

-- For a number of sys views as well as events_statements_summary_by_digest,
    -- just get the start data and then at the end output the overall and delta values
    IF (v_has_ps = 'YES') THEN
        IF (@sys.diagnostics.include_raw = 'ON') THEN
            SELECT '

========================

Initial Status

========================

' AS '';
        END IF;

DROP TEMPORARY TABLE IF EXISTS tmp_digests_start;
        CALL sys.statement_performance_analyzer('create_tmp', 'tmp_digests_start', NULL);
        CALL sys.statement_performance_analyzer('snapshot', NULL, NULL);
        CALL sys.statement_performance_analyzer('save', 'tmp_digests_start', NULL);

-- Loop over the sys views where deltas should be calculated.
        IF (@sys.diagnostics.include_raw = 'ON') THEN
            SET @sys.diagnostics.sql = REPLACE(@sys.diagnostics.sql_gen_query_template, '%{OUTPUT}', 'start');
            IF (@sys.debug = 'ON') THEN
                SELECT 'The following query will be used to generate the query for each sys view' AS 'Debug';
                SELECT @sys.diagnostics.sql AS 'Debug';
            END IF;
            PREPARE stmt_gen_query FROM @sys.diagnostics.sql;
        END IF;
        SET v_done = FALSE;
        OPEN c_sysviews_w_delta;
        c_sysviews_w_delta_loop: LOOP
            FETCH c_sysviews_w_delta INTO v_table_name;
            IF v_done THEN
                LEAVE c_sysviews_w_delta_loop;
            END IF;

IF (@sys.debug = 'ON') THEN
                SELECT CONCAT('The following queries are for storing the initial content of ', v_table_name) AS 'Debug';
            END IF;

CALL sys.execute_prepared_stmt(CONCAT('DROP TEMPORARY TABLE IF EXISTS `tmp_', v_table_name, '_start`'));
            CALL sys.execute_prepared_stmt(CONCAT('CREATE TEMPORARY TABLE `tmp_', v_table_name, '_start` SELECT * FROM `sys`.`x$', v_table_name, '`'));

IF (@sys.diagnostics.include_raw = 'ON') THEN
                SET @sys.diagnostics.table_name = CONCAT('x$', v_table_name);
                EXECUTE stmt_gen_query USING @sys.diagnostics.table_name;
                -- If necessary add ORDER BY and LIMIT
                SELECT CONCAT(@sys.diagnostics.sql_select,
                              IF(order_by IS NOT NULL, CONCAT('\n ORDER BY ', REPLACE(order_by, '%{TABLE}', CONCAT('tmp_', v_table_name, '_start'))), ''),
                              IF(limit_rows IS NOT NULL, CONCAT('\n LIMIT ', limit_rows), '')
                       )
                  INTO @sys.diagnostics.sql_select
                  FROM tmp_sys_views_delta
                 WHERE TABLE_NAME = v_table_name;
                SELECT CONCAT('Initial ', v_table_name) AS 'The following output is:';
                CALL sys.execute_prepared_stmt(@sys.diagnostics.sql_select);
            END IF;
        END LOOP;
        CLOSE c_sysviews_w_delta;

IF (@sys.diagnostics.include_raw = 'ON') THEN
            DEALLOCATE PREPARE stmt_gen_query;
        END IF;
    END IF;

-- If in_include_status_summary is TRUE then a temporary table is required to store the data
    SET v_sql_status_summary_select = 'SELECT Variable_name',
        v_sql_status_summary_delta  = '',
        v_sql_status_summary_from   = '';

-- Start the loop
    REPEAT 
        SET v_output_count = v_output_count + 1;
        IF (v_output_count > 1) THEN
            -- Don't sleep on the first execution
            SET v_sleep = in_interval-(UNIX_TIMESTAMP(NOW(2))-v_iter_start);
            SELECT NOW() AS 'Time', CONCAT('Going to sleep for ', v_sleep, ' seconds. Please do not interrupt') AS 'The following output is:';
            DO SLEEP(in_interval);
        END IF;
        SET v_iter_start = UNIX_TIMESTAMP(NOW(2));

SELECT NOW(), CONCAT('Iteration Number ', IFNULL(v_output_count, 'NULL')) AS 'The following output is:';

-- Even in 5.7 there is no way to get all the info from SHOW MASTER|SLAVE STATUS using the Performance Schema or
        -- other tables, so include them even though they are no longer optimal solutions and if present get the additional
        -- information from the other tables available.
        IF (@@log_bin = 1) THEN
            SELECT 'SHOW MASTER STATUS' AS 'The following output is:';
            SHOW MASTER STATUS;
        END IF;

IF (v_has_replication <> 'NO') THEN
            SELECT 'SHOW SLAVE STATUS' AS 'The following output is:';
            SHOW SLAVE STATUS;
        END IF;

-- We need one table per output as a temporary table cannot be opened twice in the same query, and we need to
        -- join the outputs in the summary at the end.
        SET v_table_name = CONCAT('tmp_metrics_', v_output_count);
        CALL sys.execute_prepared_stmt(CONCAT('DROP TEMPORARY TABLE IF EXISTS ', v_table_name));
        
        -- Currently information_schema.GLOBAL_STATUS has VARIABLE_VALUE as varchar(1024)
        CALL sys.execute_prepared_stmt(CONCAT('CREATE TEMPORARY TABLE ', v_table_name, ' (
  Variable_name VARCHAR(193) NOT NULL,
  Variable_value VARCHAR(1024),
  Type VARCHAR(100) NOT NULL,
  Enabled ENUM(''YES'', ''NO'', ''PARTIAL'') NOT NULL,
  PRIMARY KEY (Type, Variable_name)
) ENGINE = InnoDB DEFAULT CHARSET=utf8'));

IF (v_has_metrics) THEN
            SET @sys.diagnostics.sql = CONCAT(
                'INSERT INTO ', v_table_name,
                ' SELECT Variable_name, REPLACE(Variable_value, ''\n'', ''\\\\n'') AS Variable_value, Type, Enabled FROM sys.metrics'
            );
        ELSE
            -- 5.7+ and the Performance Schema disabled. Use information_schema.GLOBAL_STATUS instead like in 5.6.
            SET @sys.diagnostics.sql = CONCAT(
                'INSERT INTO ', v_table_name,
                '(SELECT LOWER(VARIABLE_NAME) AS Variable_name, REPLACE(VARIABLE_VALUE, ''\n'', ''\\\\n'') AS Variable_value,
                         ''Global Status'' AS Type, ''YES'' AS Enabled
  FROM performance_schema.global_status
) UNION ALL (
SELECT NAME AS Variable_name, COUNT AS Variable_value,
       CONCAT(''InnoDB Metrics - '', SUBSYSTEM) AS Type,
       IF(STATUS = ''enabled'', ''YES'', ''NO'') AS Enabled
  FROM information_schema.INNODB_METRICS
  -- Deduplication - some variables exists both in GLOBAL_STATUS and INNODB_METRICS
  -- Keep the one from GLOBAL_STATUS as it is always enabled and it''s more likely to be used for existing tools.
 WHERE NAME NOT IN (
     ''lock_row_lock_time'', ''lock_row_lock_time_avg'', ''lock_row_lock_time_max'', ''lock_row_lock_waits'',
     ''buffer_pool_reads'', ''buffer_pool_read_requests'', ''buffer_pool_write_requests'', ''buffer_pool_wait_free'',
     ''buffer_pool_read_ahead'', ''buffer_pool_read_ahead_evicted'', ''buffer_pool_pages_total'', ''buffer_pool_pages_misc'',
     ''buffer_pool_pages_data'', ''buffer_pool_bytes_data'', ''buffer_pool_pages_dirty'', ''buffer_pool_bytes_dirty'',
     ''buffer_pool_pages_free'', ''buffer_pages_created'', ''buffer_pages_written'', ''buffer_pages_read'',
     ''buffer_data_reads'', ''buffer_data_written'', ''file_num_open_files'',
     ''os_log_bytes_written'', ''os_log_fsyncs'', ''os_log_pending_fsyncs'', ''os_log_pending_writes'',
     ''log_waits'', ''log_write_requests'', ''log_writes'', ''innodb_dblwr_writes'', ''innodb_dblwr_pages_written'', ''innodb_page_size'')
) UNION ALL (
SELECT ''NOW()'' AS Variable_name, NOW(3) AS Variable_value, ''System Time'' AS Type, ''YES'' AS Enabled
) UNION ALL (
SELECT ''UNIX_TIMESTAMP()'' AS Variable_name, ROUND(UNIX_TIMESTAMP(NOW(3)), 3) AS Variable_value, ''System Time'' AS Type, ''YES'' AS Enabled
)
 ORDER BY Type, Variable_name;'
            );
        END IF;
        CALL sys.execute_prepared_stmt(@sys.diagnostics.sql);

-- Prepare the query to retrieve the summary
        CALL sys.execute_prepared_stmt(
            CONCAT('SELECT Variable_value INTO @sys.diagnostics.output_time FROM ', v_table_name, ' WHERE Type = ''System Time'' AND Variable_name = ''UNIX_TIMESTAMP()''')
        );
        SET v_output_time = @sys.diagnostics.output_time;

-- Limit each value to v_status_summary_width chars (when v_has_ndb = TRUE the values can be very wide - refer to the output here for the full values)
        -- v_sql_status_summary_select, v_sql_status_summary_delta, v_sql_status_summary_from
        SET v_sql_status_summary_select = CONCAT(v_sql_status_summary_select, ',
       CONCAT(
           LEFT(s', v_output_count, '.Variable_value, ', v_status_summary_width, '),
           IF(', REPLACE(v_no_delta_names, '%{COUNT}', v_output_count), ' AND s', v_output_count, '.Variable_value REGEXP ''^[0-9]+(\\\\.[0-9]+)?$'', CONCAT('' ('', ROUND(s', v_output_count, '.Variable_value/', v_output_time, ', 2), ''/sec)''), '''')
       ) AS ''Output ', v_output_count, ''''),
            v_sql_status_summary_from   = CONCAT(v_sql_status_summary_from, '
',
                                                    IF(v_output_count = 1, '  FROM ', '       INNER JOIN '),
                                                    v_table_name, ' s', v_output_count,
                                                    IF (v_output_count = 1, '', ' USING (Type, Variable_name)'));
        IF (v_output_count > 1) THEN
            SET v_sql_status_summary_delta  = CONCAT(v_sql_status_summary_delta, ',
       IF(', REPLACE(v_no_delta_names, '%{COUNT}', v_output_count), ' AND s', (v_output_count-1), '.Variable_value REGEXP ''^[0-9]+(\\\\.[0-9]+)?$'' AND s', v_output_count, '.Variable_value REGEXP ''^[0-9]+(\\\\.[0-9]+)?$'',
          CONCAT(IF(s', (v_output_count-1), '.Variable_value REGEXP ''^[0-9]+\\\\.[0-9]+$'' OR s', v_output_count, '.Variable_value REGEXP ''^[0-9]+\\\\.[0-9]+$'',
                    ROUND((s', v_output_count, '.Variable_value-s', (v_output_count-1), '.Variable_value), 2),
                    (s', v_output_count, '.Variable_value-s', (v_output_count-1), '.Variable_value)
                   ),
                 '' ('', ROUND((s', v_output_count, '.Variable_value-s', (v_output_count-1), '.Variable_value)/(', v_output_time, '-', v_output_time_prev, '), 2), ''/sec)''
          ),
          ''''
       ) AS ''Delta (', (v_output_count-1), ' -> ', v_output_count, ')''');
        END IF;

SET v_output_time_prev = v_output_time;

IF (@sys.diagnostics.include_raw = 'ON') THEN
            IF (v_has_metrics) THEN
                SELECT 'SELECT * FROM sys.metrics' AS 'The following output is:';
            ELSE
                SELECT 'sys.metrics equivalent' AS 'The following output is:';
            END IF;
            -- Ensures that the output here is the same as the one used in the status summary at the end
            CALL sys.execute_prepared_stmt(CONCAT('SELECT Type, Variable_name, Enabled, Variable_value FROM ', v_table_name, ' ORDER BY Type, Variable_name'));
        END IF;

-- InnoDB
        IF (v_has_innodb IN ('DEFAULT', 'YES')) THEN
            SELECT 'SHOW ENGINE INNODB STATUS' AS 'The following output is:';
            EXECUTE stmt_innodb_status;
            SELECT 'InnoDB - Transactions' AS 'The following output is:';
            SELECT * FROM information_schema.INNODB_TRX;
        END IF;

-- NDBCluster
        IF (v_has_ndb IN ('DEFAULT', 'YES')) THEN
            SELECT 'SHOW ENGINE NDBCLUSTER STATUS' AS 'The following output is:';
            EXECUTE stmt_ndbcluster_status;

SELECT 'ndbinfo.memoryusage' AS 'The following output is:';
            SELECT node_id, memory_type, sys.format_bytes(used) AS used, used_pages, sys.format_bytes(total) AS total, total_pages,
                   ROUND(100*(used/total), 2) AS 'Used %'
            FROM ndbinfo.memoryusage;

-- Loop over the ndbinfo tables (except memoryusage which was handled separately above).
            -- The exact tables available are version dependent, so get the list from the Information Schema.
            SET v_done = FALSE;
            OPEN c_ndbinfo;
            c_ndbinfo_loop: LOOP
                FETCH c_ndbinfo INTO v_table_name;
                IF v_done THEN
                LEAVE c_ndbinfo_loop;
                END IF;

SELECT CONCAT('SELECT * FROM ndbinfo.', v_table_name) AS 'The following output is:';
                CALL sys.execute_prepared_stmt(CONCAT('SELECT * FROM `ndbinfo`.`', v_table_name, '`'));
            END LOOP;
            CLOSE c_ndbinfo;

SELECT * FROM information_schema.FILES;
        END IF;

SELECT 'SELECT * FROM sys.processlist' AS 'The following output is:';
        SELECT processlist.* FROM sys.processlist;

IF (v_has_ps = 'YES') THEN
            -- latest_file_io
            IF (sys.ps_is_consumer_enabled('events_waits_history_long') = 'YES') THEN
                SELECT 'SELECT * FROM sys.latest_file_io' AS 'The following output is:';
                SELECT * FROM sys.latest_file_io;
            END IF;

-- current memory usage
            IF (EXISTS(SELECT 1 FROM performance_schema.setup_instruments WHERE NAME LIKE 'memory/%' AND ENABLED = 'YES')) THEN
                SELECT 'SELECT * FROM sys.memory_by_host_by_current_bytes' AS 'The following output is:';
                SELECT * FROM sys.memory_by_host_by_current_bytes;

SELECT 'SELECT * FROM sys.memory_by_thread_by_current_bytes' AS 'The following output is:';
                SELECT * FROM sys.memory_by_thread_by_current_bytes;

SELECT 'SELECT * FROM sys.memory_by_user_by_current_bytes' AS 'The following output is:';
                SELECT * FROM sys.memory_by_user_by_current_bytes;

SELECT 'SELECT * FROM sys.memory_global_by_current_bytes' AS 'The following output is:';
                SELECT * FROM sys.memory_global_by_current_bytes;
            END IF;
        END IF;

SET v_runtime = (UNIX_TIMESTAMP(NOW(2)) - v_start);
    UNTIL (v_runtime + in_interval >= in_max_runtime) END REPEAT;

-- Get Performance Schema status
    IF (v_has_ps = 'YES') THEN
        SELECT 'SHOW ENGINE PERFORMANCE_SCHEMA STATUS' AS 'The following output is:';
        EXECUTE stmt_ps_status;
    END IF;

-- Deallocate prepared statements
    IF (v_has_innodb IN ('DEFAULT', 'YES')) THEN
        DEALLOCATE PREPARE stmt_innodb_status;
    END IF;
    IF (v_has_ps = 'YES') THEN
        DEALLOCATE PREPARE stmt_ps_status;
    END IF;
    IF (v_has_ndb IN ('DEFAULT', 'YES')) THEN
        DEALLOCATE PREPARE stmt_ndbcluster_status;
    END IF;

SELECT '

============================

Schema Information

============================

' AS '';

SELECT COUNT(*) AS 'Total Number of Tables' FROM information_schema.TABLES;

-- The cost of information_schema.TABLES.DATA_LENGTH depends mostly on the number of tables
    IF (@sys.diagnostics.allow_i_s_tables = 'ON') THEN
        SELECT 'Storage Engine Usage' AS 'The following output is:';
        SELECT ENGINE, COUNT(*) AS NUM_TABLES,
                sys.format_bytes(SUM(DATA_LENGTH)) AS DATA_LENGTH,
                sys.format_bytes(SUM(INDEX_LENGTH)) AS INDEX_LENGTH,
                sys.format_bytes(SUM(DATA_LENGTH+INDEX_LENGTH)) AS TOTAL
            FROM information_schema.TABLES
            GROUP BY ENGINE;

SELECT 'Schema Object Overview' AS 'The following output is:';
        SELECT * FROM sys.schema_object_overview;

SELECT 'Tables without a PRIMARY KEY' AS 'The following output is:';
        SELECT TABLES.TABLE_SCHEMA, ENGINE, COUNT(*) AS NumTables
          FROM information_schema.TABLES
               LEFT OUTER JOIN information_schema.STATISTICS ON STATISTICS.TABLE_SCHEMA = TABLES.TABLE_SCHEMA
                                                                AND STATISTICS.TABLE_NAME = TABLES.TABLE_NAME
                                                                AND STATISTICS.INDEX_NAME = 'PRIMARY'
         WHERE STATISTICS.TABLE_NAME IS NULL
               AND TABLES.TABLE_SCHEMA NOT IN ('mysql', 'information_schema', 'performance_schema', 'sys')
               AND TABLES.TABLE_TYPE = 'BASE TABLE'
         GROUP BY TABLES.TABLE_SCHEMA, ENGINE;
    END IF;

IF (v_has_ps = 'YES') THEN
        SELECT 'Unused Indexes' AS 'The following output is:';
        SELECT object_schema, COUNT(*) AS NumUnusedIndexes
          FROM performance_schema.table_io_waits_summary_by_index_usage 
         WHERE index_name IS NOT NULL
               AND count_star = 0
               AND object_schema NOT IN ('mysql', 'sys')
               AND index_name != 'PRIMARY'
         GROUP BY object_schema;
    END IF;

IF (v_has_ps = 'YES') THEN
        SELECT '

=========================

Overall Status

=========================

' AS '';

SELECT 'CALL sys.ps_statement_avg_latency_histogram()' AS 'The following output is:';
        CALL sys.ps_statement_avg_latency_histogram();

CALL sys.statement_performance_analyzer('snapshot', NULL, NULL);
        CALL sys.statement_performance_analyzer('overall', NULL, 'with_runtimes_in_95th_percentile');

SET @sys.diagnostics.sql = REPLACE(@sys.diagnostics.sql_gen_query_template, '%{OUTPUT}', 'end');
        IF (@sys.debug = 'ON') THEN
            SELECT 'The following query will be used to generate the query for each sys view' AS 'Debug';
            SELECT @sys.diagnostics.sql AS 'Debug';
        END IF;
        PREPARE stmt_gen_query FROM @sys.diagnostics.sql;

SET v_done = FALSE;
        OPEN c_sysviews_w_delta;
        c_sysviews_w_delta_loop: LOOP
            FETCH c_sysviews_w_delta INTO v_table_name;
            IF v_done THEN
                LEAVE c_sysviews_w_delta_loop;
            END IF;

IF (@sys.debug = 'ON') THEN
                SELECT CONCAT('The following queries are for storing the final content of ', v_table_name) AS 'Debug';
            END IF;

CALL sys.execute_prepared_stmt(CONCAT('DROP TEMPORARY TABLE IF EXISTS `tmp_', v_table_name, '_end`'));
            CALL sys.execute_prepared_stmt(CONCAT('CREATE TEMPORARY TABLE `tmp_', v_table_name, '_end` SELECT * FROM `sys`.`x$', v_table_name, '`'));

IF (@sys.diagnostics.include_raw = 'ON') THEN
                SET @sys.diagnostics.table_name = CONCAT('x$', v_table_name);
                EXECUTE stmt_gen_query USING @sys.diagnostics.table_name;
                -- If necessary add ORDER BY and LIMIT
                SELECT CONCAT(@sys.diagnostics.sql_select,
                                IF(order_by IS NOT NULL, CONCAT('\n ORDER BY ', REPLACE(order_by, '%{TABLE}', CONCAT('tmp_', v_table_name, '_end'))), ''),
                                IF(limit_rows IS NOT NULL, CONCAT('\n LIMIT ', limit_rows), '')
                        )
                    INTO @sys.diagnostics.sql_select
                    FROM tmp_sys_views_delta
                    WHERE TABLE_NAME = v_table_name;
                SELECT CONCAT('Overall ', v_table_name) AS 'The following output is:';
                CALL sys.execute_prepared_stmt(@sys.diagnostics.sql_select);
            END IF;
        END LOOP;
        CLOSE c_sysviews_w_delta;

DEALLOCATE PREPARE stmt_gen_query;

SELECT '

======================

Delta Status

======================

' AS '';

CALL sys.statement_performance_analyzer('delta', 'tmp_digests_start', 'with_runtimes_in_95th_percentile');
        CALL sys.statement_performance_analyzer('cleanup', NULL, NULL);

DROP TEMPORARY TABLE tmp_digests_start;

-- @sys.diagnostics.sql_gen_query_delta is defined near the to together with @sys.diagnostics.sql_gen_query_template
        IF (@sys.debug = 'ON') THEN
            SELECT 'The following query will be used to generate the query for each sys view delta' AS 'Debug';
            SELECT @sys.diagnostics.sql_gen_query_delta AS 'Debug';
        END IF;
        PREPARE stmt_gen_query_delta FROM @sys.diagnostics.sql_gen_query_delta;

SET v_old_group_concat_max_len = @@session.group_concat_max_len;
        SET @@session.group_concat_max_len = 2048;
        SET v_done = FALSE;
        OPEN c_sysviews_w_delta;
        c_sysviews_w_delta_loop: LOOP
            FETCH c_sysviews_w_delta INTO v_table_name;
            IF v_done THEN
                LEAVE c_sysviews_w_delta_loop;
            END IF;

SET @sys.diagnostics.table_name = v_table_name;
            EXECUTE stmt_gen_query_delta USING @sys.diagnostics.table_name;
            -- If necessary add WHERE, ORDER BY, and LIMIT
            SELECT CONCAT(@sys.diagnostics.sql_select,
                            IF(where_delta IS NOT NULL, CONCAT('\n WHERE ', where_delta), ''),
                            IF(order_by_delta IS NOT NULL, CONCAT('\n ORDER BY ', order_by_delta), ''),
                            IF(limit_rows IS NOT NULL, CONCAT('\n LIMIT ', limit_rows), '')
                    )
                INTO @sys.diagnostics.sql_select
                FROM tmp_sys_views_delta
                WHERE TABLE_NAME = v_table_name;

SELECT CONCAT('Delta ', v_table_name) AS 'The following output is:';
            CALL sys.execute_prepared_stmt(@sys.diagnostics.sql_select);

CALL sys.execute_prepared_stmt(CONCAT('DROP TEMPORARY TABLE `tmp_', v_table_name, '_end`'));
            CALL sys.execute_prepared_stmt(CONCAT('DROP TEMPORARY TABLE `tmp_', v_table_name, '_start`'));
        END LOOP;
        CLOSE c_sysviews_w_delta;
        SET @@session.group_concat_max_len = v_old_group_concat_max_len;

DEALLOCATE PREPARE stmt_gen_query_delta;
        DROP TEMPORARY TABLE tmp_sys_views_delta;
    END IF;

IF (v_has_metrics) THEN
        SELECT 'SELECT * FROM sys.metrics' AS 'The following output is:';
    ELSE
        SELECT 'sys.metrics equivalent' AS 'The following output is:';
    END IF;
    CALL sys.execute_prepared_stmt(
        CONCAT(v_sql_status_summary_select, v_sql_status_summary_delta, ', Type, s1.Enabled', v_sql_status_summary_from,
               '
 ORDER BY Type, Variable_name'
        )
    );

-- Remove all the metrics temporary tables again
    SET v_count = 0;
    WHILE (v_count < v_output_count) DO
        SET v_count = v_count + 1;
        SET v_table_name = CONCAT('tmp_metrics_', v_count);
        CALL sys.execute_prepared_stmt(CONCAT('DROP TEMPORARY TABLE IF EXISTS ', v_table_name));
    END WHILE;

IF (in_auto_config <> 'current') THEN
        CALL sys.ps_setup_reload_saved();
        SET sql_log_bin = @log_bin;
    END IF;

-- Reset the @sys.diagnostics.% user variables internal to this procedure
    SET @sys.diagnostics.output_time            = NULL,
        @sys.diagnostics.sql                    = NULL,
        @sys.diagnostics.sql_gen_query_delta    = NULL,
        @sys.diagnostics.sql_gen_query_template = NULL,
        @sys.diagnostics.sql_select             = NULL,
        @sys.diagnostics.table_name             = NULL;

-- Restore INSTRUMENTED for this thread
    IF (v_this_thread_enabled = 'YES') THEN
        CALL sys.ps_setup_enable_thread(CONNECTION_ID());
    END IF;

IF (@log_bin = 1) THEN
        SET sql_log_bin = @log_bin;
    END IF;
END$$

DROP PROCEDURE IF EXISTS ps_statement_avg_latency_histogram;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' PROCEDURE ps_statement_avg_latency_histogram ()
    COMMENT '
             Description
             -----------

Outputs a textual histogram graph of the average latency values
             across all normalized queries tracked within the Performance Schema
             events_statements_summary_by_digest table.

Can be used to show a very high level picture of what kind of 
             latency distribution statements running within this instance have.

Parameters
             -----------

None.

Example
             -----------

mysql> CALL sys.ps_statement_avg_latency_histogram()\\G
             *************************** 1. row ***************************
             Performance Schema Statement Digest Average Latency Histogram:

. = 1 unit
               * = 2 units
               # = 3 units

(0 - 38ms)     240 | ################################################################################
             (38 - 77ms)    38  | ......................................
             (77 - 115ms)   3   | ...
             (115 - 154ms)  62  | *******************************
             (154 - 192ms)  3   | ...
             (192 - 231ms)  0   |
             (231 - 269ms)  0   |
             (269 - 307ms)  0   |
             (307 - 346ms)  0   |
             (346 - 384ms)  1   | .
             (384 - 423ms)  1   | .
             (423 - 461ms)  0   |
             (461 - 499ms)  0   |
             (499 - 538ms)  0   |
             (538 - 576ms)  0   |
             (576 - 615ms)  1   | .

Total Statements: 350; Buckets: 16; Bucket Size: 38 ms;
            '
    SQL SECURITY INVOKER
    NOT DETERMINISTIC
    READS SQL DATA
BEGIN
SELECT CONCAT('\n',
       '\n  . = 1 unit',
       '\n  * = 2 units',
       '\n  # = 3 units\n',
       @label := CONCAT(@label_inner := CONCAT('\n(0 - ',
                                               ROUND((@bucket_size := (SELECT ROUND((MAX(avg_us) - MIN(avg_us)) / (@buckets := 16)) AS size
                                                                         FROM sys.x$ps_digest_avg_latency_distribution)) / (@unit_div := 1000)),
                                                (@unit := 'ms'), ')'),
                        REPEAT(' ', (@max_label_size := ((1 + LENGTH(ROUND((@bucket_size * 15) / @unit_div)) + 3 + LENGTH(ROUND(@bucket_size * 16) / @unit_div)) + 1)) - LENGTH(@label_inner)),
                        @count_in_bucket := IFNULL((SELECT SUM(cnt)
                                                      FROM sys.x$ps_digest_avg_latency_distribution AS b1 
                                                     WHERE b1.avg_us <= @bucket_size), 0)),
       REPEAT(' ', (@max_label_len := (@max_label_size + LENGTH((@total_queries := (SELECT SUM(cnt) FROM sys.x$ps_digest_avg_latency_distribution)))) + 1) - LENGTH(@label)), '| ',
       IFNULL(REPEAT(IF(@count_in_bucket < (@one_unit := 40), '.', IF(@count_in_bucket < (@two_unit := 80), '*', '#')), 
       	             IF(@count_in_bucket < @one_unit, @count_in_bucket,
       	             	IF(@count_in_bucket < @two_unit, @count_in_bucket / 2, @count_in_bucket / 3))), ''),

@label := CONCAT(@label_inner := CONCAT('\n(', ROUND(@bucket_size / @unit_div), ' - ', ROUND((@bucket_size * 2) / @unit_div), @unit, ')'),
                        REPEAT(' ', @max_label_size - LENGTH(@label_inner)),
                        @count_in_bucket := IFNULL((SELECT SUM(cnt)
                                                      FROM sys.x$ps_digest_avg_latency_distribution AS b1 
                                                     WHERE b1.avg_us > @bucket_size AND b1.avg_us <= @bucket_size * 2), 0)),
       REPEAT(' ', @max_label_len - LENGTH(@label)), '| ',
       IFNULL(REPEAT(IF(@count_in_bucket < @one_unit, '.', IF(@count_in_bucket < @two_unit, '*', '#')), 
       	             IF(@count_in_bucket < @one_unit, @count_in_bucket,
       	             	IF(@count_in_bucket < @two_unit, @count_in_bucket / 2, @count_in_bucket / 3))), ''),
       @label := CONCAT(@label_inner := CONCAT('\n(', ROUND((@bucket_size * 2) / @unit_div), ' - ', ROUND((@bucket_size * 3) / @unit_div), @unit, ')'),
                        REPEAT(' ', @max_label_size - LENGTH(@label_inner)),
                        @count_in_bucket := IFNULL((SELECT SUM(cnt)
                                                      FROM sys.x$ps_digest_avg_latency_distribution AS b1 
                                                     WHERE b1.avg_us > @bucket_size * 2 AND b1.avg_us <= @bucket_size * 3), 0)),
       REPEAT(' ', @max_label_len - LENGTH(@label)), '| ',
       IFNULL(REPEAT(IF(@count_in_bucket < @one_unit, '.', IF(@count_in_bucket < @two_unit, '*', '#')), 
       	             IF(@count_in_bucket < @one_unit, @count_in_bucket,
       	             	IF(@count_in_bucket < @two_unit, @count_in_bucket / 2, @count_in_bucket / 3))), ''),
       @label := CONCAT(@label_inner := CONCAT('\n(', ROUND((@bucket_size * 3) / @unit_div), ' - ', ROUND((@bucket_size * 4) / @unit_div), @unit, ')'),
                        REPEAT(' ', @max_label_size - LENGTH(@label_inner)),
                        @count_in_bucket := IFNULL((SELECT SUM(cnt)
                                                      FROM sys.x$ps_digest_avg_latency_distribution AS b1 
                                                     WHERE b1.avg_us > @bucket_size * 3 AND b1.avg_us <= @bucket_size * 4), 0)),
       REPEAT(' ', @max_label_len - LENGTH(@label)), '| ',
       IFNULL(REPEAT(IF(@count_in_bucket < @one_unit, '.', IF(@count_in_bucket < @two_unit, '*', '#')), 
       	             IF(@count_in_bucket < @one_unit, @count_in_bucket,
       	             	IF(@count_in_bucket < @two_unit, @count_in_bucket / 2, @count_in_bucket / 3))), ''),
       @label := CONCAT(@label_inner := CONCAT('\n(', ROUND((@bucket_size * 4) / @unit_div), ' - ', ROUND((@bucket_size * 5) / @unit_div), @unit, ')'),
                        REPEAT(' ', @max_label_size - LENGTH(@label_inner)),
                        @count_in_bucket := IFNULL((SELECT SUM(cnt)
                                                      FROM sys.x$ps_digest_avg_latency_distribution AS b1 
                                                     WHERE b1.avg_us > @bucket_size * 4 AND b1.avg_us <= @bucket_size * 5), 0)),
       REPEAT(' ', @max_label_len - LENGTH(@label)), '| ',
       IFNULL(REPEAT(IF(@count_in_bucket < @one_unit, '.', IF(@count_in_bucket < @two_unit, '*', '#')), 
       	             IF(@count_in_bucket < @one_unit, @count_in_bucket,
       	             	IF(@count_in_bucket < @two_unit, @count_in_bucket / 2, @count_in_bucket / 3))), ''),
       @label := CONCAT(@label_inner := CONCAT('\n(', ROUND((@bucket_size * 5) / @unit_div), ' - ', ROUND((@bucket_size * 6) / @unit_div), @unit, ')'),
                        REPEAT(' ', @max_label_size - LENGTH(@label_inner)),
                        @count_in_bucket := IFNULL((SELECT SUM(cnt)
                                                      FROM sys.x$ps_digest_avg_latency_distribution AS b1 
                                                     WHERE b1.avg_us > @bucket_size * 5 AND b1.avg_us <= @bucket_size * 6), 0)),
       REPEAT(' ', @max_label_len - LENGTH(@label)), '| ',
       IFNULL(REPEAT(IF(@count_in_bucket < @one_unit, '.', IF(@count_in_bucket < @two_unit, '*', '#')), 
       	             IF(@count_in_bucket < @one_unit, @count_in_bucket,
       	             	IF(@count_in_bucket < @two_unit, @count_in_bucket / 2, @count_in_bucket / 3))), ''),
       @label := CONCAT(@label_inner := CONCAT('\n(', ROUND((@bucket_size * 6) / @unit_div), ' - ', ROUND((@bucket_size * 7) / @unit_div), @unit, ')'),
                        REPEAT(' ', @max_label_size - LENGTH(@label_inner)),
                        @count_in_bucket := IFNULL((SELECT SUM(cnt)
                                                      FROM sys.x$ps_digest_avg_latency_distribution AS b1 
                                                     WHERE b1.avg_us > @bucket_size * 6 AND b1.avg_us <= @bucket_size * 7), 0)),
       REPEAT(' ', @max_label_len - LENGTH(@label)), '| ',
       IFNULL(REPEAT(IF(@count_in_bucket < @one_unit, '.', IF(@count_in_bucket < @two_unit, '*', '#')), 
       	             IF(@count_in_bucket < @one_unit, @count_in_bucket,
       	             	IF(@count_in_bucket < @two_unit, @count_in_bucket / 2, @count_in_bucket / 3))), ''),
       @label := CONCAT(@label_inner := CONCAT('\n(', ROUND((@bucket_size * 7) / @unit_div), ' - ', ROUND((@bucket_size * 8) / @unit_div), @unit, ')'),
                        REPEAT(' ', @max_label_size - LENGTH(@label_inner)),
                        @count_in_bucket := IFNULL((SELECT SUM(cnt)
                                                      FROM sys.x$ps_digest_avg_latency_distribution AS b1 
                                                     WHERE b1.avg_us > @bucket_size * 7 AND b1.avg_us <= @bucket_size * 8), 0)),
       REPEAT(' ', @max_label_len - LENGTH(@label)), '| ',
       IFNULL(REPEAT(IF(@count_in_bucket < @one_unit, '.', IF(@count_in_bucket < @two_unit, '*', '#')), 
       	             IF(@count_in_bucket < @one_unit, @count_in_bucket,
       	             	IF(@count_in_bucket < @two_unit, @count_in_bucket / 2, @count_in_bucket / 3))), ''),
       @label := CONCAT(@label_inner := CONCAT('\n(', ROUND((@bucket_size * 8) / @unit_div), ' - ', ROUND((@bucket_size * 9) / @unit_div), @unit, ')'),
                        REPEAT(' ', @max_label_size - LENGTH(@label_inner)),
                        @count_in_bucket := IFNULL((SELECT SUM(cnt)
                                                      FROM sys.x$ps_digest_avg_latency_distribution AS b1 
                                                     WHERE b1.avg_us > @bucket_size * 8 AND b1.avg_us <= @bucket_size * 9), 0)),
       REPEAT(' ', @max_label_len - LENGTH(@label)), '| ',
       IFNULL(REPEAT(IF(@count_in_bucket < @one_unit, '.', IF(@count_in_bucket < @two_unit, '*', '#')), 
       	             IF(@count_in_bucket < @one_unit, @count_in_bucket,
       	             	IF(@count_in_bucket < @two_unit, @count_in_bucket / 2, @count_in_bucket / 3))), ''),
       @label := CONCAT(@label_inner := CONCAT('\n(', ROUND((@bucket_size * 9) / @unit_div), ' - ', ROUND((@bucket_size * 10) / @unit_div), @unit, ')'),
                         REPEAT(' ', @max_label_size - LENGTH(@label_inner)),
                         @count_in_bucket := IFNULL((SELECT SUM(cnt)
                                                       FROM sys.x$ps_digest_avg_latency_distribution AS b1 
                                                      WHERE b1.avg_us > @bucket_size * 9 AND b1.avg_us <= @bucket_size * 10), 0)),
       REPEAT(' ', @max_label_len - LENGTH(@label)), '| ',
       IFNULL(REPEAT(IF(@count_in_bucket < @one_unit, '.', IF(@count_in_bucket < @two_unit, '*', '#')), 
       	             IF(@count_in_bucket < @one_unit, @count_in_bucket,
       	             	IF(@count_in_bucket < @two_unit, @count_in_bucket / 2, @count_in_bucket / 3))), ''),
       @label := CONCAT(@label_inner := CONCAT('\n(', ROUND((@bucket_size * 10) / @unit_div), ' - ', ROUND((@bucket_size * 11) / @unit_div), @unit, ')'),
                        REPEAT(' ', @max_label_size - LENGTH(@label_inner)),
                        @count_in_bucket := IFNULL((SELECT SUM(cnt)
                                                      FROM sys.x$ps_digest_avg_latency_distribution AS b1 
                                                     WHERE b1.avg_us > @bucket_size * 10 AND b1.avg_us <= @bucket_size * 11), 0)),
       REPEAT(' ', @max_label_len - LENGTH(@label)), '| ',
       IFNULL(REPEAT(IF(@count_in_bucket < @one_unit, '.', IF(@count_in_bucket < @two_unit, '*', '#')), 
       	             IF(@count_in_bucket < @one_unit, @count_in_bucket,
       	             	IF(@count_in_bucket < @two_unit, @count_in_bucket / 2, @count_in_bucket / 3))), ''),
       @label := CONCAT(@label_inner := CONCAT('\n(', ROUND((@bucket_size * 11) / @unit_div), ' - ', ROUND((@bucket_size * 12) / @unit_div), @unit, ')'),
                        REPEAT(' ', @max_label_size - LENGTH(@label_inner)),
                        @count_in_bucket := IFNULL((SELECT SUM(cnt)
                                                      FROM sys.x$ps_digest_avg_latency_distribution AS b1 
                                                     WHERE b1.avg_us > @bucket_size * 11 AND b1.avg_us <= @bucket_size * 12), 0)),
       REPEAT(' ', @max_label_len - LENGTH(@label)), '| ',
       IFNULL(REPEAT(IF(@count_in_bucket < @one_unit, '.', IF(@count_in_bucket < @two_unit, '*', '#')), 
       	             IF(@count_in_bucket < @one_unit, @count_in_bucket,
       	             	IF(@count_in_bucket < @two_unit, @count_in_bucket / 2, @count_in_bucket / 3))), ''),
       @label := CONCAT(@label_inner := CONCAT('\n(', ROUND((@bucket_size * 12) / @unit_div), ' - ', ROUND((@bucket_size * 13) / @unit_div), @unit, ')'),
                        REPEAT(' ', @max_label_size - LENGTH(@label_inner)),
                        @count_in_bucket := IFNULL((SELECT SUM(cnt)
                                                      FROM sys.x$ps_digest_avg_latency_distribution AS b1 
                                                     WHERE b1.avg_us > @bucket_size * 12 AND b1.avg_us <= @bucket_size * 13), 0)),
       REPEAT(' ', @max_label_len - LENGTH(@label)), '| ',
       IFNULL(REPEAT(IF(@count_in_bucket < @one_unit, '.', IF(@count_in_bucket < @two_unit, '*', '#')), 
       	             IF(@count_in_bucket < @one_unit, @count_in_bucket,
       	             	IF(@count_in_bucket < @two_unit, @count_in_bucket / 2, @count_in_bucket / 3))), ''),
       @label := CONCAT(@label_inner := CONCAT('\n(', ROUND((@bucket_size * 13) / @unit_div), ' - ', ROUND((@bucket_size * 14) / @unit_div), @unit, ')'),
                        REPEAT(' ', @max_label_size - LENGTH(@label_inner)),
                        @count_in_bucket := IFNULL((SELECT SUM(cnt)
                                                      FROM sys.x$ps_digest_avg_latency_distribution AS b1 
                                                     WHERE b1.avg_us > @bucket_size * 13 AND b1.avg_us <= @bucket_size * 14), 0)),
       REPEAT(' ', @max_label_len - LENGTH(@label)), '| ',
       IFNULL(REPEAT(IF(@count_in_bucket < @one_unit, '.', IF(@count_in_bucket < @two_unit, '*', '#')), 
       	             IF(@count_in_bucket < @one_unit, @count_in_bucket,
       	             	IF(@count_in_bucket < @two_unit, @count_in_bucket / 2, @count_in_bucket / 3))), ''),
       @label := CONCAT(@label_inner := CONCAT('\n(', ROUND((@bucket_size * 14) / @unit_div), ' - ', ROUND((@bucket_size * 15) / @unit_div), @unit, ')'),
                        REPEAT(' ', @max_label_size - LENGTH(@label_inner)),
                        @count_in_bucket := IFNULL((SELECT SUM(cnt)
                                                      FROM sys.x$ps_digest_avg_latency_distribution AS b1 
                                                     WHERE b1.avg_us > @bucket_size * 14 AND b1.avg_us <= @bucket_size * 15), 0)),
       REPEAT(' ', @max_label_len - LENGTH(@label)), '| ',
       IFNULL(REPEAT(IF(@count_in_bucket < @one_unit, '.', IF(@count_in_bucket < @two_unit, '*', '#')), 
       	             IF(@count_in_bucket < @one_unit, @count_in_bucket,
       	             	IF(@count_in_bucket < @two_unit, @count_in_bucket / 2, @count_in_bucket / 3))), ''),
       @label := CONCAT(@label_inner := CONCAT('\n(', ROUND((@bucket_size * 15) / @unit_div), ' - ', ROUND((@bucket_size * 16) / @unit_div), @unit, ')'),
                        REPEAT(' ', @max_label_size - LENGTH(@label_inner)),
                        @count_in_bucket := IFNULL((SELECT SUM(cnt)
                                                      FROM sys.x$ps_digest_avg_latency_distribution AS b1 
                                                     WHERE b1.avg_us > @bucket_size * 15 AND b1.avg_us <= @bucket_size * 16), 0)),
       REPEAT(' ', @max_label_len - LENGTH(@label)), '| ',
       IFNULL(REPEAT(IF(@count_in_bucket < @one_unit, '.', IF(@count_in_bucket < @two_unit, '*', '#')), 
       	             IF(@count_in_bucket < @one_unit, @count_in_bucket,
       	             	IF(@count_in_bucket < @two_unit, @count_in_bucket / 2, @count_in_bucket / 3))), ''),

'\n\n  Total Statements: ', @total_queries, '; Buckets: ', @buckets , '; Bucket Size: ', ROUND(@bucket_size / @unit_div) , ' ', @unit, ';\n'

) AS `Performance Schema Statement Digest Average Latency Histogram`;

END $$

DELIMITER ;

DROP PROCEDURE IF EXISTS ps_trace_statement_digest;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' PROCEDURE ps_trace_statement_digest (
        IN in_digest VARCHAR(32),
        IN in_runtime INT, 
        IN in_interval DECIMAL(2,2),
        IN in_start_fresh BOOLEAN,
        IN in_auto_enable BOOLEAN
    )
    COMMENT '
             Description
             -----------

Traces all instrumentation within Performance Schema for a specific
             Statement Digest.

When finding a statement of interest within the 
             performance_schema.events_statements_summary_by_digest table, feed
             the DIGEST MD5 value in to this procedure, set how long to poll for, 
             and at what interval to poll, and it will generate a report of all 
             statistics tracked within Performance Schema for that digest for the
             interval.

It will also attempt to generate an EXPLAIN for the longest running 
             example of the digest during the interval. Note this may fail, as:

* Performance Schema truncates long SQL_TEXT values (and hence the 
                  EXPLAIN will fail due to parse errors)
                * the default schema is sys (so tables that are not fully qualified
                  in the query may not be found)
                * some queries such as SHOW are not supported in EXPLAIN.

When the EXPLAIN fails, the error will be ignored and no EXPLAIN
             output generated.

Requires the SUPER privilege for "SET sql_log_bin = 0;".

Parameters
             -----------

in_digest (VARCHAR(32)):
               The statement digest identifier you would like to analyze
             in_runtime (INT):
               The number of seconds to run analysis for
             in_interval (DECIMAL(2,2)):
               The interval (in seconds, may be fractional) at which to try
               and take snapshots
             in_start_fresh (BOOLEAN):
               Whether to TRUNCATE the events_statements_history_long and
               events_stages_history_long tables before starting
             in_auto_enable (BOOLEAN):
               Whether to automatically turn on required consumers

Example
             -----------

mysql> call ps_trace_statement_digest(\'891ec6860f98ba46d89dd20b0c03652c\', 10, 0.1, true, true);
             +--------------------+
             | SUMMARY STATISTICS |
             +--------------------+
             | SUMMARY STATISTICS |
             +--------------------+
             1 row in set (9.11 sec)

+------------+-----------+-----------+-----------+---------------+------------+------------+
             | executions | exec_time | lock_time | rows_sent | rows_examined | tmp_tables | full_scans |
             +------------+-----------+-----------+-----------+---------------+------------+------------+
             |         21 | 4.11 ms   | 2.00 ms   |         0 |            21 |          0 |          0 |
             +------------+-----------+-----------+-----------+---------------+------------+------------+
             1 row in set (9.11 sec)

+------------------------------------------+-------+-----------+
             | event_name                               | count | latency   |
             +------------------------------------------+-------+-----------+
             | stage/sql/checking query cache for query |    16 | 724.37 us |
             | stage/sql/statistics                     |    16 | 546.92 us |
             | stage/sql/freeing items                  |    18 | 520.11 us |
             | stage/sql/init                           |    51 | 466.80 us |
             ...
             | stage/sql/cleaning up                    |    18 | 11.92 us  |
             | stage/sql/executing                      |    16 | 6.95 us   |
             +------------------------------------------+-------+-----------+
             17 rows in set (9.12 sec)

+---------------------------+
             | LONGEST RUNNING STATEMENT |
             +---------------------------+
             | LONGEST RUNNING STATEMENT |
             +---------------------------+
             1 row in set (9.16 sec)
             
             +-----------+-----------+-----------+-----------+---------------+------------+-----------+
             | thread_id | exec_time | lock_time | rows_sent | rows_examined | tmp_tables | full_scan |
             +-----------+-----------+-----------+-----------+---------------+------------+-----------+
             |    166646 | 618.43 us | 1.00 ms   |         0 |             1 |          0 |         0 |
             +-----------+-----------+-----------+-----------+---------------+------------+-----------+
             1 row in set (9.16 sec)

// Truncated for clarity...
             +-----------------------------------------------------------------+
             | sql_text                                                        |
             +-----------------------------------------------------------------+
             | select hibeventhe0_.id as id1382_, hibeventhe0_.createdTime ... |
             +-----------------------------------------------------------------+
             1 row in set (9.17 sec)

+------------------------------------------+-----------+
             | event_name                               | latency   |
             +------------------------------------------+-----------+
             | stage/sql/init                           | 8.61 us   |
             | stage/sql/Waiting for query cache lock   | 453.23 us |
             | stage/sql/init                           | 331.07 ns |
             | stage/sql/checking query cache for query | 43.04 us  |
             ...
             | stage/sql/freeing items                  | 30.46 us  |
             | stage/sql/cleaning up                    | 662.13 ns |
             +------------------------------------------+-----------+
             18 rows in set (9.23 sec)

Query OK, 0 rows affected (9.28 sec)
            '
    SQL SECURITY INVOKER
    NOT DETERMINISTIC
    MODIFIES SQL DATA
BEGIN

DECLARE v_start_fresh BOOLEAN DEFAULT false;
    DECLARE v_auto_enable BOOLEAN DEFAULT false;
    DECLARE v_explain     BOOLEAN DEFAULT true;
    DECLARE v_this_thread_enabed ENUM('YES', 'NO');
    DECLARE v_runtime INT DEFAULT 0;
    DECLARE v_start INT DEFAULT 0;
    DECLARE v_found_stmts INT;

SET @log_bin := @@sql_log_bin;
    SET sql_log_bin = 0;

-- Do not track the current thread, it will kill the stack
    SELECT INSTRUMENTED INTO v_this_thread_enabed FROM performance_schema.threads WHERE PROCESSLIST_ID = CONNECTION_ID();
    CALL sys.ps_setup_disable_thread(CONNECTION_ID());

DROP TEMPORARY TABLE IF EXISTS stmt_trace;
    CREATE TEMPORARY TABLE stmt_trace (
        thread_id BIGINT UNSIGNED,
        timer_start BIGINT UNSIGNED,
        event_id BIGINT UNSIGNED,
        sql_text longtext,
        timer_wait BIGINT UNSIGNED,
        lock_time BIGINT UNSIGNED,
        errors BIGINT UNSIGNED,
        mysql_errno INT,
        rows_sent BIGINT UNSIGNED,
        rows_affected BIGINT UNSIGNED,
        rows_examined BIGINT UNSIGNED,
        created_tmp_tables BIGINT UNSIGNED,
        created_tmp_disk_tables BIGINT UNSIGNED,
        no_index_used BIGINT UNSIGNED,
        PRIMARY KEY (thread_id, timer_start)
    );

DROP TEMPORARY TABLE IF EXISTS stmt_stages;
    CREATE TEMPORARY TABLE stmt_stages (
       event_id BIGINT UNSIGNED,
       stmt_id BIGINT UNSIGNED,
       event_name VARCHAR(128),
       timer_wait BIGINT UNSIGNED,
       PRIMARY KEY (event_id)
    );

SET v_start_fresh = in_start_fresh;
    IF v_start_fresh THEN
        TRUNCATE TABLE performance_schema.events_statements_history_long;
        TRUNCATE TABLE performance_schema.events_stages_history_long;
    END IF;

SET v_auto_enable = in_auto_enable;
    IF v_auto_enable THEN
        CALL sys.ps_setup_save(0);

UPDATE performance_schema.threads
           SET INSTRUMENTED = IF(PROCESSLIST_ID IS NOT NULL, 'YES', 'NO');

-- Only the events_statements_history_long and events_stages_history_long tables and their ancestors are needed
        UPDATE performance_schema.setup_consumers
           SET ENABLED = 'YES'
         WHERE NAME NOT LIKE '%\_history'
               AND NAME NOT LIKE 'events_wait%'
               AND NAME NOT LIKE 'events_transactions%'
               AND NAME <> 'statements_digest';

UPDATE performance_schema.setup_instruments
           SET ENABLED = 'YES',
               TIMED   = 'YES'
         WHERE NAME LIKE 'statement/%' OR NAME LIKE 'stage/%';
    END IF;

WHILE v_runtime < in_runtime DO
        SELECT UNIX_TIMESTAMP() INTO v_start;

INSERT IGNORE INTO stmt_trace
        SELECT thread_id, timer_start, event_id, sql_text, timer_wait, lock_time, errors, mysql_errno, 
               rows_sent, rows_affected, rows_examined, created_tmp_tables, created_tmp_disk_tables, no_index_used
          FROM performance_schema.events_statements_history_long
        WHERE digest = in_digest;

INSERT IGNORE INTO stmt_stages
        SELECT stages.event_id, stmt_trace.event_id,
               stages.event_name, stages.timer_wait
          FROM performance_schema.events_stages_history_long AS stages
          JOIN stmt_trace ON stages.nesting_event_id = stmt_trace.event_id;

SELECT SLEEP(in_interval) INTO @sleep;
        SET v_runtime = v_runtime + (UNIX_TIMESTAMP() - v_start);
    END WHILE;

SELECT "SUMMARY STATISTICS";

SELECT COUNT(*) executions,
           sys.format_time(SUM(timer_wait)) AS exec_time,
           sys.format_time(SUM(lock_time)) AS lock_time,
           SUM(rows_sent) AS rows_sent,
           SUM(rows_affected) AS rows_affected,
           SUM(rows_examined) AS rows_examined,
           SUM(created_tmp_tables) AS tmp_tables,
           SUM(no_index_used) AS full_scans
      FROM stmt_trace;

SELECT event_name,
           COUNT(*) as count,
           sys.format_time(SUM(timer_wait)) as latency
      FROM stmt_stages
     GROUP BY event_name
     ORDER BY SUM(timer_wait) DESC;

SELECT "LONGEST RUNNING STATEMENT";

SELECT thread_id,
           sys.format_time(timer_wait) AS exec_time,
           sys.format_time(lock_time) AS lock_time,
           rows_sent,
           rows_affected,
           rows_examined,
           created_tmp_tables AS tmp_tables,
           no_index_used AS full_scan
      FROM stmt_trace
     ORDER BY timer_wait DESC LIMIT 1;

SELECT sql_text
      FROM stmt_trace
     ORDER BY timer_wait DESC LIMIT 1;

SELECT sql_text, event_id INTO @sql, @sql_id
      FROM stmt_trace
    ORDER BY timer_wait DESC LIMIT 1;

IF (@sql_id IS NOT NULL) THEN
        SELECT event_name,
               sys.format_time(timer_wait) as latency
          FROM stmt_stages
         WHERE stmt_id = @sql_id
         ORDER BY event_id;
    END IF;

DROP TEMPORARY TABLE stmt_trace;
    DROP TEMPORARY TABLE stmt_stages;

IF (@sql IS NOT NULL) THEN
        SET @stmt := CONCAT("EXPLAIN FORMAT=JSON ", @sql);
        BEGIN
            -- Not all queries support EXPLAIN, so catch the cases that are
            -- not supported. Currently that includes cases where the table
            -- is not fully qualified and is not in the default schema for this
            -- procedure as it's not possible to change the default schema inside
            -- a procedure.
            --
            -- Errno = 1064: You have an error in your SQL syntax
            -- Errno = 1146: Table '...' doesn't exist
            DECLARE CONTINUE HANDLER FOR 1064, 1146 SET v_explain = false;

PREPARE explain_stmt FROM @stmt;
        END;

IF (v_explain) THEN
            EXECUTE explain_stmt;
            DEALLOCATE PREPARE explain_stmt;
        END IF;
    END IF;

IF v_auto_enable THEN
        CALL sys.ps_setup_reload_saved();
    END IF;
    -- Restore INSTRUMENTED for this thread
    IF (v_this_thread_enabed = 'YES') THEN
        CALL sys.ps_setup_enable_thread(CONNECTION_ID());
    END IF;

SET sql_log_bin = @log_bin;
END$$

DELIMITER ;

DROP PROCEDURE IF EXISTS ps_trace_thread;

DELIMITER $$
CREATE DEFINER='mariadb.sys'@'localhost' PROCEDURE ps_trace_thread (
        IN in_thread_id BIGINT UNSIGNED,
        IN in_outfile VARCHAR(255),
        IN in_max_runtime DECIMAL(20,2),
        IN in_interval DECIMAL(20,2),
        IN in_start_fresh BOOLEAN,
        IN in_auto_setup BOOLEAN,
        IN in_debug BOOLEAN
    )
    COMMENT '
             Description
             -----------

Dumps all data within Performance Schema for an instrumented thread,
             to create a DOT formatted graph file.

Each resultset returned from the procedure should be used for a complete graph

Requires the SUPER privilege for "SET sql_log_bin = 0;".

Parameters
             -----------

in_thread_id (BIGINT UNSIGNED):
               The thread that you would like a stack trace for
             in_outfile  (VARCHAR(255)):
               The filename the dot file will be written to
             in_max_runtime (DECIMAL(20,2)):
               The maximum time to keep collecting data.
               Use NULL to get the default which is 60 seconds.
             in_interval (DECIMAL(20,2)): 
               How long to sleep between data collections. 
               Use NULL to get the default which is 1 second.
             in_start_fresh (BOOLEAN):
               Whether to reset all Performance Schema data before tracing.
             in_auto_setup (BOOLEAN):
               Whether to disable all other threads and enable all consumers/instruments. 
               This will also reset the settings at the end of the run.
             in_debug (BOOLEAN):
               Whether you would like to include file:lineno in the graph

Example
             -----------

mysql> CALL sys.ps_trace_thread(25, CONCAT(\'/tmp/stack-\', REPLACE(NOW(), \' \', \'-\'), \'.dot\'), NULL, NULL, TRUE, TRUE, TRUE);
             +-------------------+
             | summary           |
             +-------------------+
             | Disabled 1 thread |
             +-------------------+
             1 row in set (0.00 sec)

+---------------------------------------------+
             | Info                                        |
             +---------------------------------------------+
             | Data collection starting for THREAD_ID = 25 |
             +---------------------------------------------+
             1 row in set (0.03 sec)

+-----------------------------------------------------------+
             | Info                                                      |
             +-----------------------------------------------------------+
             | Stack trace written to /tmp/stack-2014-02-16-21:18:41.dot |
             +-----------------------------------------------------------+
             1 row in set (60.07 sec)

+-------------------------------------------------------------------+
             | Convert to PDF                                                    |
             +-------------------------------------------------------------------+
             | dot -Tpdf -o /tmp/stack_25.pdf /tmp/stack-2014-02-16-21:18:41.dot |
             +-------------------------------------------------------------------+
             1 row in set (60.07 sec)

+-------------------------------------------------------------------+
             | Convert to PNG                                                    |
             +-------------------------------------------------------------------+
             | dot -Tpng -o /tmp/stack_25.png /tmp/stack-2014-02-16-21:18:41.dot |
             +-------------------------------------------------------------------+
             1 row in set (60.07 sec)

+------------------+
             | summary          |
             +------------------+
             | Enabled 1 thread |
             +------------------+
             1 row in set (60.32 sec)
            '
    SQL SECURITY INVOKER
    NOT DETERMINISTIC
    MODIFIES SQL DATA
BEGIN
    DECLARE v_done bool DEFAULT FALSE;
    DECLARE v_start, v_runtime DECIMAL(20,2) DEFAULT 0.0;
    DECLARE v_min_event_id bigint unsigned DEFAULT 0;
    DECLARE v_this_thread_enabed ENUM('YES', 'NO');
    DECLARE v_event longtext;
    DECLARE c_stack CURSOR FOR
        SELECT CONCAT(IF(nesting_event_id IS NOT NULL, CONCAT(nesting_event_id, ' -> '), ''), 
                    event_id, '; ', event_id, ' [label="',
                    -- Convert from picoseconds to microseconds
                    '(', sys.format_time(timer_wait), ') ',
                    IF (event_name NOT LIKE 'wait/io%', 
                        SUBSTRING_INDEX(event_name, '/', -2), 
                        IF (event_name NOT LIKE 'wait/io/file%' OR event_name NOT LIKE 'wait/io/socket%',
                            SUBSTRING_INDEX(event_name, '/', -4),
                            event_name)
                        ),
                    -- Always dump the extra wait information gathered for statements
                    IF (event_name LIKE 'statement/%', IFNULL(CONCAT('\\n', wait_info), ''), ''),
                    -- If debug is enabled, add the file:lineno information for waits
                    IF (in_debug AND event_name LIKE 'wait%', wait_info, ''),
                    '", ', 
                    -- Depending on the type of event, style appropriately
                    CASE WHEN event_name LIKE 'wait/io/file%' THEN 
                           'shape=box, style=filled, color=red'
                         WHEN event_name LIKE 'wait/io/table%' THEN 
                           'shape=box, style=filled, color=green'
                         WHEN event_name LIKE 'wait/io/socket%' THEN
                           'shape=box, style=filled, color=yellow'
                         WHEN event_name LIKE 'wait/synch/mutex%' THEN
                           'style=filled, color=lightskyblue'
                         WHEN event_name LIKE 'wait/synch/cond%' THEN
                           'style=filled, color=darkseagreen3'
                         WHEN event_name LIKE 'wait/synch/rwlock%' THEN
                           'style=filled, color=orchid'
                         WHEN event_name LIKE 'wait/lock%' THEN
                           'shape=box, style=filled, color=tan'
                         WHEN event_name LIKE 'statement/%' THEN
                           CONCAT('shape=box, style=bold',
                                  -- Style statements depending on COM vs SQL
                                  CASE WHEN event_name LIKE 'statement/com/%' THEN
                                         ' style=filled, color=darkseagreen'
                                       ELSE
                                         -- Use long query time from the server to
                                         -- flag long running statements in red
                                         IF((timer_wait/1000000000000) > @@log_slow_query_time,
                                            ' style=filled, color=red', 
                                            ' style=filled, color=lightblue')
                                  END
                           )
                         WHEN event_name LIKE 'stage/%' THEN
                           'style=filled, color=slategray3'
                         -- IDLE events are on their own, call attention to them
                         WHEN event_name LIKE '%idle%' THEN
                           'shape=box, style=filled, color=firebrick3'
                         ELSE '' END,
                     '];\n'
                   ) event, event_id
        FROM (
             -- Select all statements, with the extra tracing information available
             (SELECT thread_id, event_id, event_name, timer_wait, timer_start, nesting_event_id, 
                     CONCAT(sql_text, '\\n',
                            'errors: ', errors, '\\n',
                            'warnings: ', warnings, '\\n',
                            'lock time: ', sys.format_time(lock_time),'\\n',
                            'rows affected: ', rows_affected, '\\n',
                            'rows sent: ', rows_sent, '\\n',
                            'rows examined: ', rows_examined, '\\n',
                            'tmp tables: ', created_tmp_tables, '\\n',
                            'tmp disk tables: ', created_tmp_disk_tables, '\\n'
                            'select scan: ', select_scan, '\\n',
                            'select full join: ', select_full_join, '\\n',
                            'select full range join: ', select_full_range_join, '\\n',
                            'select range: ', select_range, '\\n',
                            'select range check: ', select_range_check, '\\n', 
                            'sort merge passes: ', sort_merge_passes, '\\n',
                            'sort rows: ', sort_rows, '\\n',
                            'sort range: ', sort_range, '\\n',
                            'sort scan: ', sort_scan, '\\n',
                            'no index used: ', IF(no_index_used, 'TRUE', 'FALSE'), '\\n',
                            'no good index used: ', IF(no_good_index_used, 'TRUE', 'FALSE'), '\\n'
                     ) AS wait_info
                FROM performance_schema.events_statements_history_long
               WHERE thread_id = in_thread_id AND event_id > v_min_event_id)
             UNION
             -- Select all stages
             (SELECT thread_id, event_id, event_name, timer_wait, timer_start, nesting_event_id, null AS wait_info
                FROM performance_schema.events_stages_history_long 
               WHERE thread_id = in_thread_id AND event_id > v_min_event_id)
             UNION 
             -- Select all events, adding information appropriate to the event
             (SELECT thread_id, event_id, 
                     CONCAT(event_name, 
                            IF(event_name NOT LIKE 'wait/synch/mutex%', IFNULL(CONCAT(' - ', operation), ''), ''), 
                            IF(number_of_bytes IS NOT NULL, CONCAT(' ', number_of_bytes, ' bytes'), ''),
                            IF(event_name LIKE 'wait/io/file%', '\\n', ''),
                            IF(object_schema IS NOT NULL, CONCAT('\\nObject: ', object_schema, '.'), ''), 
                            IF(object_name IS NOT NULL, 
                               IF (event_name LIKE 'wait/io/socket%',
                                   -- Print the socket if used, else the IP:port as reported
                                   CONCAT('\\n', IF (object_name LIKE ':0%', @@socket, object_name)),
                                   object_name),
                               ''
                            ),
                            IF(index_name IS NOT NULL, CONCAT(' Index: ', index_name), ''), '\\n'
                     ) AS event_name,
                     timer_wait, timer_start, nesting_event_id, source AS wait_info
                FROM performance_schema.events_waits_history_long
               WHERE thread_id = in_thread_id AND event_id > v_min_event_id)
           ) events 
       ORDER BY event_id;
    DECLARE CONTINUE HANDLER FOR NOT FOUND SET v_done = TRUE;

SET @log_bin := @@sql_log_bin;
    SET sql_log_bin = 0;

IF (in_auto_setup) THEN
        CALL sys.ps_setup_save(0);
        
        -- Ensure only the thread to create the stack trace for is instrumented and that we instrument everything.
        DELETE FROM performance_schema.setup_actors;

UPDATE performance_schema.threads
           SET INSTRUMENTED = IF(THREAD_ID = in_thread_id, 'YES', 'NO');

-- only the %_history_long tables and it ancestors are needed
        UPDATE performance_schema.setup_consumers
           SET ENABLED = 'YES'
         WHERE NAME NOT LIKE '%\_history';

UPDATE performance_schema.setup_instruments
           SET ENABLED = 'YES',
               TIMED   = 'YES';
    END IF;

IF (in_start_fresh) THEN
        TRUNCATE performance_schema.events_statements_history_long;
        TRUNCATE performance_schema.events_stages_history_long;
        TRUNCATE performance_schema.events_waits_history_long;
    END IF;

DROP TEMPORARY TABLE IF EXISTS tmp_events;
    CREATE TEMPORARY TABLE tmp_events (
      event_id bigint unsigned NOT NULL,
      event longblob,
      PRIMARY KEY (event_id)
    );

-- Print headers for a .dot file
    INSERT INTO tmp_events VALUES (0, CONCAT('digraph events { rankdir=LR; nodesep=0.10;\n',
                                             '// Stack created .....: ', NOW(), '\n',
                                             '// MySQL version .....: ', VERSION(), '\n',
                                             '// MySQL hostname ....: ', @@hostname, '\n',
                                             '// MySQL port ........: ', @@port, '\n',
                                             '// MySQL socket ......: ', @@socket, '\n',
                                             '// MySQL user ........: ', CURRENT_USER(), '\n'));

SELECT CONCAT('Data collection starting for THREAD_ID = ', in_thread_id) AS 'Info';

SET v_min_event_id = 0,
        v_start        = UNIX_TIMESTAMP(),
        in_interval    = IFNULL(in_interval, 1.00),
        in_max_runtime = IFNULL(in_max_runtime, 60.00);

WHILE (v_runtime < in_max_runtime
           AND (SELECT INSTRUMENTED FROM performance_schema.threads WHERE THREAD_ID = in_thread_id) = 'YES') DO
        SET v_done = FALSE;
        OPEN c_stack;
        c_stack_loop: LOOP
            FETCH c_stack INTO v_event, v_min_event_id;
            IF v_done THEN
                LEAVE c_stack_loop;
            END IF;

IF (LENGTH(v_event) > 0) THEN
                INSERT INTO tmp_events VALUES (v_min_event_id, v_event);
            END IF;
        END LOOP;
        CLOSE c_stack;

SELECT SLEEP(in_interval) INTO @sleep;
        SET v_runtime = (UNIX_TIMESTAMP() - v_start);
    END WHILE;

INSERT INTO tmp_events VALUES (v_min_event_id+1, '}');
   
    SET @query = CONCAT('SELECT event FROM tmp_events ORDER BY event_id INTO OUTFILE ''', in_outfile, ''' FIELDS ESCAPED BY '''' LINES TERMINATED BY ''''');
    PREPARE stmt_output FROM @query;
    EXECUTE stmt_output;
    DEALLOCATE PREPARE stmt_output;
   
    SELECT CONCAT('Stack trace written to ', in_outfile) AS 'Info';
    SELECT CONCAT('dot -Tpdf -o /tmp/stack_', in_thread_id, '.pdf ', in_outfile) AS 'Convert to PDF';
    SELECT CONCAT('dot -Tpng -o /tmp/stack_', in_thread_id, '.png ', in_outfile) AS 'Convert to PNG';
    DROP TEMPORARY TABLE tmp_events;

-- Reset the settings for the performance schema
    IF (in_auto_setup) THEN
        CALL sys.ps_setup_reload_saved();
    END IF;
    -- Restore INSTRUMENTED for this thread
    IF (v_this_thread_enabed = 'YES') THEN
        CALL sys.ps_setup_enable_thread(CONNECTION_ID());
    END IF;

SET sql_log_bin = @log_bin;
END$$

DELIMITER ;

DROP PROCEDURE IF EXISTS ps_setup_disable_background_threads;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' PROCEDURE ps_setup_disable_background_threads ()
    COMMENT '
             Description
             -----------

Disable all background thread instrumentation within Performance Schema.

Parameters
             -----------

None.

Example
             -----------

mysql> CALL sys.ps_setup_disable_background_threads();
             +--------------------------------+
             | summary                        |
             +--------------------------------+
             | Disabled 18 background threads |
             +--------------------------------+
             1 row in set (0.00 sec)
            '
    SQL SECURITY INVOKER
    NOT DETERMINISTIC
    MODIFIES SQL DATA
BEGIN
    UPDATE performance_schema.threads
       SET instrumented = 'NO'
     WHERE type = 'BACKGROUND';

SELECT CONCAT('Disabled ', @rows := ROW_COUNT(), ' background thread', IF(@rows != 1, 's', '')) AS summary;
END$$

DELIMITER ;

DROP PROCEDURE IF EXISTS ps_setup_disable_consumer;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' PROCEDURE ps_setup_disable_consumer (
        IN consumer VARCHAR(128)
    )
    COMMENT '
             Description
             -----------

Disables consumers within Performance Schema 
             matching the input pattern.

Parameters
             -----------

consumer (VARCHAR(128)):
               A LIKE pattern match (using "%consumer%") of consumers to disable

Example
             -----------

To disable all consumers:

mysql> CALL sys.ps_setup_disable_consumer(\'\');
             +--------------------------+
             | summary                  |
             +--------------------------+
             | Disabled 15 consumers    |
             +--------------------------+
             1 row in set (0.02 sec)

To disable just the event_stage consumers:

mysql> CALL sys.ps_setup_disable_comsumers(\'stage\');
             +------------------------+
             | summary                |
             +------------------------+
             | Disabled 3 consumers   |
             +------------------------+
             1 row in set (0.00 sec)
            '
    SQL SECURITY INVOKER
    NOT DETERMINISTIC
    MODIFIES SQL DATA
BEGIN
    UPDATE performance_schema.setup_consumers
       SET enabled = 'NO'
     WHERE name LIKE CONCAT('%', consumer, '%');

SELECT CONCAT('Disabled ', @rows := ROW_COUNT(), ' consumer', IF(@rows != 1, 's', '')) AS summary;
END$$

DELIMITER ;

DROP PROCEDURE IF EXISTS ps_setup_disable_instrument;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' PROCEDURE ps_setup_disable_instrument (
        IN in_pattern VARCHAR(128)
    )
    COMMENT '
             Description
             -----------

Disables instruments within Performance Schema 
             matching the input pattern.

Parameters
             -----------

in_pattern (VARCHAR(128)):
               A LIKE pattern match (using "%in_pattern%") of events to disable

Example
             -----------

To disable all mutex instruments:

mysql> CALL sys.ps_setup_disable_instrument(\'wait/synch/mutex\');
             +--------------------------+
             | summary                  |
             +--------------------------+
             | Disabled 155 instruments |
             +--------------------------+
             1 row in set (0.02 sec)

To disable just a specific TCP/IP based network IO instrument:

mysql> CALL sys.ps_setup_disable_instrument(\'wait/io/socket/sql/server_tcpip_socket\');
             +------------------------+
             | summary                |
             +------------------------+
             | Disabled 1 instruments |
             +------------------------+
             1 row in set (0.00 sec)

To disable all instruments:

mysql> CALL sys.ps_setup_disable_instrument(\'\');
             +--------------------------+
             | summary                  |
             +--------------------------+
             | Disabled 547 instruments |
             +--------------------------+
             1 row in set (0.01 sec)
            '
    SQL SECURITY INVOKER
    NOT DETERMINISTIC
    MODIFIES SQL DATA
BEGIN
    UPDATE performance_schema.setup_instruments
       SET enabled = 'NO', timed = 'NO'
     WHERE name LIKE CONCAT('%', in_pattern, '%');

SELECT CONCAT('Disabled ', @rows := ROW_COUNT(), ' instrument', IF(@rows != 1, 's', '')) AS summary;
END$$

DELIMITER ;

DROP PROCEDURE IF EXISTS ps_setup_disable_thread;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' PROCEDURE ps_setup_disable_thread (
        IN in_connection_id BIGINT
    )
    COMMENT '
             Description
             -----------

Disable the given connection/thread in Performance Schema.

Parameters
             -----------

in_connection_id (BIGINT):
               The connection ID (PROCESSLIST_ID from performance_schema.threads
               or the ID shown within SHOW PROCESSLIST)

Example
             -----------

mysql> CALL sys.ps_setup_disable_thread(3);
             +-------------------+
             | summary           |
             +-------------------+
             | Disabled 1 thread |
             +-------------------+
             1 row in set (0.01 sec)

To disable the current connection:

mysql> CALL sys.ps_setup_disable_thread(CONNECTION_ID());
             +-------------------+
             | summary           |
             +-------------------+
             | Disabled 1 thread |
             +-------------------+
             1 row in set (0.00 sec)
            '
    SQL SECURITY INVOKER
    NOT DETERMINISTIC
    MODIFIES SQL DATA
BEGIN
    UPDATE performance_schema.threads
       SET instrumented = 'NO'
     WHERE processlist_id = in_connection_id;

SELECT CONCAT('Disabled ', @rows := ROW_COUNT(), ' thread', IF(@rows != 1, 's', '')) AS summary;
END$$

DELIMITER ;

DROP PROCEDURE IF EXISTS ps_setup_enable_background_threads;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' PROCEDURE ps_setup_enable_background_threads ()
    COMMENT '
             Description
             -----------

Enable all background thread instrumentation within Performance Schema.

Parameters
             -----------

None.

Example
             -----------

mysql> CALL sys.ps_setup_enable_background_threads();
             +-------------------------------+
             | summary                       |
             +-------------------------------+
             | Enabled 18 background threads |
             +-------------------------------+
             1 row in set (0.00 sec)
            '
    SQL SECURITY INVOKER
    NOT DETERMINISTIC
    MODIFIES SQL DATA
BEGIN
    UPDATE performance_schema.threads
       SET instrumented = 'YES'
     WHERE type = 'BACKGROUND';

SELECT CONCAT('Enabled ', @rows := ROW_COUNT(), ' background thread', IF(@rows != 1, 's', '')) AS summary;
END$$

DELIMITER ;

DROP PROCEDURE IF EXISTS ps_setup_enable_consumer;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' PROCEDURE ps_setup_enable_consumer (
        IN consumer VARCHAR(128)
    )
    COMMENT '
             Description
             -----------

Enables consumers within Performance Schema 
             matching the input pattern.

Parameters
             -----------

consumer (VARCHAR(128)):
               A LIKE pattern match (using "%consumer%") of consumers to enable

Example
             -----------

To enable all consumers:

mysql> CALL sys.ps_setup_enable_consumer(\'\');
             +-------------------------+
             | summary                 |
             +-------------------------+
             | Enabled 10 consumers    |
             +-------------------------+
             1 row in set (0.02 sec)

Query OK, 0 rows affected (0.02 sec)

To enable just "waits" consumers:

mysql> CALL sys.ps_setup_enable_consumer(\'waits\');
             +-----------------------+
             | summary               |
             +-----------------------+
             | Enabled 3 consumers   |
             +-----------------------+
             1 row in set (0.00 sec)

Query OK, 0 rows affected (0.00 sec)
             '
    SQL SECURITY INVOKER
    NOT DETERMINISTIC
    MODIFIES SQL DATA
BEGIN
    UPDATE performance_schema.setup_consumers
       SET enabled = 'YES'
     WHERE name LIKE CONCAT('%', consumer, '%');

SELECT CONCAT('Enabled ', @rows := ROW_COUNT(), ' consumer', IF(@rows != 1, 's', '')) AS summary;
END$$

DELIMITER ;

DROP PROCEDURE IF EXISTS ps_setup_enable_instrument;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' PROCEDURE ps_setup_enable_instrument (
        IN in_pattern VARCHAR(128)
    )
    COMMENT '
             Description
             -----------

Enables instruments within Performance Schema 
             matching the input pattern.

Parameters
             -----------

in_pattern (VARCHAR(128)):
               A LIKE pattern match (using "%in_pattern%") of events to enable

Example
             -----------

To enable all mutex instruments:

mysql> CALL sys.ps_setup_enable_instrument(\'wait/synch/mutex\');
             +-------------------------+
             | summary                 |
             +-------------------------+
             | Enabled 155 instruments |
             +-------------------------+
             1 row in set (0.02 sec)

Query OK, 0 rows affected (0.02 sec)

To enable just a specific TCP/IP based network IO instrument:

mysql> CALL sys.ps_setup_enable_instrument(\'wait/io/socket/sql/server_tcpip_socket\');
             +-----------------------+
             | summary               |
             +-----------------------+
             | Enabled 1 instruments |
             +-----------------------+
             1 row in set (0.00 sec)

Query OK, 0 rows affected (0.00 sec)

To enable all instruments:

mysql> CALL sys.ps_setup_enable_instrument(\'\');
             +-------------------------+
             | summary                 |
             +-------------------------+
             | Enabled 547 instruments |
             +-------------------------+
             1 row in set (0.01 sec)

Query OK, 0 rows affected (0.01 sec)
            '
    SQL SECURITY INVOKER
    NOT DETERMINISTIC
    MODIFIES SQL DATA
BEGIN
    UPDATE performance_schema.setup_instruments
       SET enabled = 'YES', timed = 'YES'
     WHERE name LIKE CONCAT('%', in_pattern, '%');

SELECT CONCAT('Enabled ', @rows := ROW_COUNT(), ' instrument', IF(@rows != 1, 's', '')) AS summary;
END$$

DELIMITER ;

DROP PROCEDURE IF EXISTS ps_setup_enable_thread;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' PROCEDURE ps_setup_enable_thread (
        IN in_connection_id BIGINT
    )
    COMMENT '
             Description
             -----------

Enable the given connection/thread in Performance Schema.

Parameters
             -----------

in_connection_id (BIGINT):
               The connection ID (PROCESSLIST_ID from performance_schema.threads
               or the ID shown within SHOW PROCESSLIST)

Example
             -----------

mysql> CALL sys.ps_setup_enable_thread(3);
             +------------------+
             | summary          |
             +------------------+
             | Enabled 1 thread |
             +------------------+
             1 row in set (0.01 sec)

To enable the current connection:

mysql> CALL sys.ps_setup_enable_thread(CONNECTION_ID());
             +------------------+
             | summary          |
             +------------------+
             | Enabled 1 thread |
             +------------------+
             1 row in set (0.00 sec)
            '
    SQL SECURITY INVOKER
    NOT DETERMINISTIC
    MODIFIES SQL DATA
BEGIN
    UPDATE performance_schema.threads
       SET instrumented = 'YES'
     WHERE processlist_id = in_connection_id;

SELECT CONCAT('Enabled ', @rows := ROW_COUNT(), ' thread', IF(@rows != 1, 's', '')) AS summary;
END$$

DELIMITER ;

DROP PROCEDURE IF EXISTS ps_setup_reload_saved;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' PROCEDURE ps_setup_reload_saved ()
    COMMENT '
             Description
             -----------

Reloads a saved Performance Schema configuration,
             so that you can alter the setup for debugging purposes, 
             but restore it to a previous state.
             
             Use the companion procedure - ps_setup_save(), to 
             save a configuration.

Requires the SUPER privilege for "SET sql_log_bin = 0;".

Parameters
             -----------

None.

Example
             -----------

mysql> CALL sys.ps_setup_save();
             Query OK, 0 rows affected (0.08 sec)

mysql> UPDATE performance_schema.setup_instruments SET enabled = \'YES\', timed = \'YES\';
             Query OK, 547 rows affected (0.40 sec)
             Rows matched: 784  Changed: 547  Warnings: 0

/* Run some tests that need more detailed instrumentation here */

mysql> CALL sys.ps_setup_reload_saved();
             Query OK, 0 rows affected (0.32 sec)
            '
    SQL SECURITY INVOKER
    NOT DETERMINISTIC
    MODIFIES SQL DATA
BEGIN
    DECLARE v_done bool DEFAULT FALSE;
    DECLARE v_lock_result INT;
    DECLARE v_lock_used_by BIGINT;
    DECLARE v_signal_message TEXT;
    DECLARE EXIT HANDLER FOR SQLEXCEPTION
    BEGIN
        SIGNAL SQLSTATE VALUE '90001'
           SET MESSAGE_TEXT = 'An error occurred, was sys.ps_setup_save() run before this procedure?';
    END;

SET @log_bin := @@sql_log_bin;
    SET sql_log_bin = 0;

SELECT IS_USED_LOCK('sys.ps_setup_save') INTO v_lock_used_by;

IF (v_lock_used_by != CONNECTION_ID()) THEN
        SET v_signal_message = CONCAT('The sys.ps_setup_save lock is currently owned by ', v_lock_used_by);
        SIGNAL SQLSTATE VALUE '90002'
           SET MESSAGE_TEXT = v_signal_message;
    END IF;

DELETE FROM performance_schema.setup_actors;
    INSERT INTO performance_schema.setup_actors SELECT * FROM tmp_setup_actors;

BEGIN
        -- Workaround for http://bugs.mysql.com/bug.php?id=70025
        DECLARE v_name varchar(64);
        DECLARE v_enabled enum('YES', 'NO');
        DECLARE c_consumers CURSOR FOR SELECT NAME, ENABLED FROM tmp_setup_consumers;
        DECLARE CONTINUE HANDLER FOR NOT FOUND SET v_done = TRUE;

SET v_done = FALSE;
        OPEN c_consumers;
        c_consumers_loop: LOOP
            FETCH c_consumers INTO v_name, v_enabled;
            IF v_done THEN
               LEAVE c_consumers_loop;
            END IF;

UPDATE performance_schema.setup_consumers
               SET ENABLED = v_enabled
             WHERE NAME = v_name;
         END LOOP;
         CLOSE c_consumers;
    END;

UPDATE performance_schema.setup_instruments
     INNER JOIN tmp_setup_instruments USING (NAME)
       SET performance_schema.setup_instruments.ENABLED = tmp_setup_instruments.ENABLED,
           performance_schema.setup_instruments.TIMED   = tmp_setup_instruments.TIMED;
    BEGIN
        -- Workaround for http://bugs.mysql.com/bug.php?id=70025
        DECLARE v_thread_id bigint unsigned;
        DECLARE v_instrumented enum('YES', 'NO');
        DECLARE c_threads CURSOR FOR SELECT THREAD_ID, INSTRUMENTED FROM tmp_threads;
        DECLARE CONTINUE HANDLER FOR NOT FOUND SET v_done = TRUE;

SET v_done = FALSE;
        OPEN c_threads;
        c_threads_loop: LOOP
            FETCH c_threads INTO v_thread_id, v_instrumented;
            IF v_done THEN
               LEAVE c_threads_loop;
            END IF;

UPDATE performance_schema.threads
               SET INSTRUMENTED = v_instrumented
             WHERE THREAD_ID = v_thread_id;
        END LOOP;
        CLOSE c_threads;
    END;

UPDATE performance_schema.threads
       SET INSTRUMENTED = IF(PROCESSLIST_USER IS NOT NULL,
                             sys.ps_is_account_enabled(PROCESSLIST_HOST, PROCESSLIST_USER),
                             'YES')
     WHERE THREAD_ID NOT IN (SELECT THREAD_ID FROM tmp_threads);

DROP TEMPORARY TABLE tmp_setup_actors;
    DROP TEMPORARY TABLE tmp_setup_consumers;
    DROP TEMPORARY TABLE tmp_setup_instruments;
    DROP TEMPORARY TABLE tmp_threads;

SELECT RELEASE_LOCK('sys.ps_setup_save') INTO v_lock_result;

SET sql_log_bin = @log_bin; 
END$$

DELIMITER ;

-- Because of bug 11750980/bug 41686, set the sql_mode to ''
SET @old_sql_mode = @@session.sql_mode, @@session.sql_mode = '';

DROP PROCEDURE IF EXISTS ps_setup_reset_to_default;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' PROCEDURE ps_setup_reset_to_default (
       IN in_verbose BOOLEAN
    )
    COMMENT '
             Description
             -----------

Resets the Performance Schema setup to the default settings.

Parameters
             -----------

in_verbose (BOOLEAN):
               Whether to print each setup stage (including the SQL) whilst running.

Example
             -----------

mysql> CALL sys.ps_setup_reset_to_default(true)\\G
             *************************** 1. row ***************************
             status: Resetting: setup_actors
             DELETE
             FROM performance_schema.setup_actors
              WHERE NOT (HOST = \'%\' AND USER = \'%\' AND ROLE = \'%\')
             1 row in set (0.00 sec)

*************************** 1. row ***************************
             status: Resetting: setup_actors
             INSERT IGNORE INTO performance_schema.setup_actors
             VALUES (\'%\', \'%\', \'%\')
             1 row in set (0.00 sec)
             ...

mysql> CALL sys.ps_setup_reset_to_default(false)\\G
             Query OK, 0 rows affected (0.00 sec)
            '
    SQL SECURITY INVOKER
    NOT DETERMINISTIC
    MODIFIES SQL DATA
BEGIN
    SET @query = 'DELETE
                    FROM performance_schema.setup_actors
                   WHERE NOT (HOST = ''%'' AND USER = ''%'' AND ROLE = ''%'')';

IF (in_verbose) THEN
        SELECT CONCAT('Resetting: setup_actors\n', REPLACE(@query, '  ', '')) AS status;
    END IF;

PREPARE reset_stmt FROM @query;
    EXECUTE reset_stmt;
    DEALLOCATE PREPARE reset_stmt;

SET @query = 'INSERT IGNORE INTO performance_schema.setup_actors
                  VALUES (''%'', ''%'', ''%'', ''YES'', ''YES'')';

IF (in_verbose) THEN
        SELECT CONCAT('Resetting: setup_actors\n', REPLACE(@query, '  ', '')) AS status;
    END IF;

PREPARE reset_stmt FROM @query;
    EXECUTE reset_stmt;
    DEALLOCATE PREPARE reset_stmt;

SET @query = 'UPDATE performance_schema.setup_instruments
                     SET ENABLED = sys.ps_is_instrument_default_enabled(NAME),
                         TIMED   = sys.ps_is_instrument_default_timed(NAME)';

IF (in_verbose) THEN
        SELECT CONCAT('Resetting: setup_instruments\n', REPLACE(@query, '  ', '')) AS status;
    END IF;

PREPARE reset_stmt FROM @query;
    EXECUTE reset_stmt;
    DEALLOCATE PREPARE reset_stmt;
         
    SET @query = 'UPDATE performance_schema.setup_consumers
                     SET ENABLED = IF(NAME IN (''events_statements_current'', ''events_transactions_current'', ''global_instrumentation'', ''thread_instrumentation'', ''statements_digest''), ''YES'', ''NO'')';

IF (in_verbose) THEN
        SELECT CONCAT('Resetting: setup_consumers\n', REPLACE(@query, '  ', '')) AS status;
    END IF;

PREPARE reset_stmt FROM @query;
    EXECUTE reset_stmt;
    DEALLOCATE PREPARE reset_stmt;

SET @query = 'DELETE
                    FROM performance_schema.setup_objects
                   WHERE NOT (OBJECT_TYPE IN (''EVENT'', ''FUNCTION'', ''PROCEDURE'', ''TABLE'', ''TRIGGER'') AND OBJECT_NAME = ''%''
                     AND (OBJECT_SCHEMA = ''mysql''              AND ENABLED = ''NO''  AND TIMED = ''NO'' )
                      OR (OBJECT_SCHEMA = ''performance_schema'' AND ENABLED = ''NO''  AND TIMED = ''NO'' )
                      OR (OBJECT_SCHEMA = ''information_schema'' AND ENABLED = ''NO''  AND TIMED = ''NO'' )
                      OR (OBJECT_SCHEMA = ''%''                  AND ENABLED = ''YES'' AND TIMED = ''YES''))';

IF (in_verbose) THEN
        SELECT CONCAT('Resetting: setup_objects\n', REPLACE(@query, '  ', '')) AS status;
    END IF;

PREPARE reset_stmt FROM @query;
    EXECUTE reset_stmt;
    DEALLOCATE PREPARE reset_stmt;

SET @query = 'INSERT IGNORE INTO performance_schema.setup_objects
                  VALUES (''EVENT''    , ''mysql''             , ''%'', ''NO'' , ''NO'' ),
                         (''EVENT''    , ''performance_schema'', ''%'', ''NO'' , ''NO'' ),
                         (''EVENT''    , ''information_schema'', ''%'', ''NO'' , ''NO'' ),
                         (''EVENT''    , ''%''                 , ''%'', ''YES'', ''YES''),
                         (''FUNCTION'' , ''mysql''             , ''%'', ''NO'' , ''NO'' ),
                         (''FUNCTION'' , ''performance_schema'', ''%'', ''NO'' , ''NO'' ),
                         (''FUNCTION'' , ''information_schema'', ''%'', ''NO'' , ''NO'' ),
                         (''FUNCTION'' , ''%''                 , ''%'', ''YES'', ''YES''),
                         (''PROCEDURE'', ''mysql''             , ''%'', ''NO'' , ''NO'' ),
                         (''PROCEDURE'', ''performance_schema'', ''%'', ''NO'' , ''NO'' ),
                         (''PROCEDURE'', ''information_schema'', ''%'', ''NO'' , ''NO'' ),
                         (''PROCEDURE'', ''%''                 , ''%'', ''YES'', ''YES''),
                         (''TABLE''    , ''mysql''             , ''%'', ''NO'' , ''NO'' ),
                         (''TABLE''    , ''performance_schema'', ''%'', ''NO'' , ''NO'' ),
                         (''TABLE''    , ''information_schema'', ''%'', ''NO'' , ''NO'' ),
                         (''TABLE''    , ''%''                 , ''%'', ''YES'', ''YES''),
                         (''TRIGGER''  , ''mysql''             , ''%'', ''NO'' , ''NO'' ),
                         (''TRIGGER''  , ''performance_schema'', ''%'', ''NO'' , ''NO'' ),
                         (''TRIGGER''  , ''information_schema'', ''%'', ''NO'' , ''NO'' ),
                         (''TRIGGER''  , ''%''                 , ''%'', ''YES'', ''YES'')';

IF (in_verbose) THEN
        SELECT CONCAT('Resetting: setup_objects\n', REPLACE(@query, '  ', '')) AS status;
    END IF;

PREPARE reset_stmt FROM @query;
    EXECUTE reset_stmt;
    DEALLOCATE PREPARE reset_stmt;

SET @query = 'UPDATE performance_schema.threads
                     SET INSTRUMENTED = ''YES''';

IF (in_verbose) THEN
        SELECT CONCAT('Resetting: threads\n', REPLACE(@query, '  ', '')) AS status;
    END IF;

PREPARE reset_stmt FROM @query;
    EXECUTE reset_stmt;
    DEALLOCATE PREPARE reset_stmt;
END$$

DELIMITER ;

SET @@session.sql_mode = @old_sql_mode;

DROP PROCEDURE IF EXISTS ps_setup_save;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' PROCEDURE ps_setup_save (
        IN in_timeout INT
    )
    COMMENT '
             Description
             -----------

Saves the current configuration of Performance Schema, 
             so that you can alter the setup for debugging purposes, 
             but restore it to a previous state.

Use the companion procedure - ps_setup_reload_saved(), to 
             restore the saved config.

The named lock "sys.ps_setup_save" is taken before the
             current configuration is saved. If the attempt to get the named
             lock times out, an error occurs.

The lock is released after the settings have been restored by
             calling ps_setup_reload_saved().

Requires the SUPER privilege for "SET sql_log_bin = 0;".

Parameters
             -----------

in_timeout INT
               The timeout in seconds used when trying to obtain the lock.
               A negative timeout means infinite timeout.

Example
             -----------

mysql> CALL sys.ps_setup_save(-1);
             Query OK, 0 rows affected (0.08 sec)

mysql> UPDATE performance_schema.setup_instruments 
                 ->    SET enabled = \'YES\', timed = \'YES\';
             Query OK, 547 rows affected (0.40 sec)
             Rows matched: 784  Changed: 547  Warnings: 0

/* Run some tests that need more detailed instrumentation here */

mysql> CALL sys.ps_setup_reload_saved();
             Query OK, 0 rows affected (0.32 sec)
            '
    SQL SECURITY INVOKER
    NOT DETERMINISTIC
    MODIFIES SQL DATA
BEGIN
    DECLARE v_lock_result INT;

SET @log_bin := @@sql_log_bin;
    SET sql_log_bin = 0;

SELECT GET_LOCK('sys.ps_setup_save', in_timeout) INTO v_lock_result;

IF v_lock_result THEN
        DROP TEMPORARY TABLE IF EXISTS tmp_setup_actors;
        DROP TEMPORARY TABLE IF EXISTS tmp_setup_consumers;
        DROP TEMPORARY TABLE IF EXISTS tmp_setup_instruments;
        DROP TEMPORARY TABLE IF EXISTS tmp_threads;

CREATE TEMPORARY TABLE tmp_setup_actors AS SELECT * FROM performance_schema.setup_actors;
        CREATE TEMPORARY TABLE tmp_setup_consumers AS SELECT * FROM  performance_schema.setup_consumers;
        CREATE TEMPORARY TABLE tmp_setup_instruments AS SELECT * FROM  performance_schema.setup_instruments;
        CREATE TEMPORARY TABLE tmp_threads (THREAD_ID bigint unsigned NOT NULL PRIMARY KEY, INSTRUMENTED enum('YES','NO') NOT NULL);

INSERT INTO tmp_threads SELECT THREAD_ID, INSTRUMENTED FROM performance_schema.threads;
    ELSE
        SIGNAL SQLSTATE VALUE '90000'
           SET MESSAGE_TEXT = 'Could not lock the sys.ps_setup_save user lock, another thread has a saved configuration';
    END IF;

SET sql_log_bin = @log_bin;
END$$

DELIMITER ;

DROP PROCEDURE IF EXISTS ps_setup_show_disabled;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' PROCEDURE ps_setup_show_disabled (
        IN in_show_instruments BOOLEAN,
        IN in_show_threads BOOLEAN
    )
    COMMENT '
             Description
             -----------

Shows all currently disable Performance Schema configuration.

Disabled users is only available for MySQL 5.7.6 and later.
             In earlier versions it was only possible to enable users.

Parameters
             -----------

in_show_instruments (BOOLEAN):
               Whether to print disabled instruments (can print many items)

in_show_threads (BOOLEAN):
               Whether to print disabled threads

Example
             -----------

mysql> CALL sys.ps_setup_show_disabled(TRUE, TRUE);
             +----------------------------+
             | performance_schema_enabled |
             +----------------------------+
             |                          1 |
             +----------------------------+
             1 row in set (0.00 sec)

+--------------------+
             | disabled_users     |
             +--------------------+
             | \'mark\'@\'localhost\' |
             +--------------------+
             1 row in set (0.00 sec)

+-------------+----------------------+---------+-------+
             | object_type | objects              | enabled | timed |
             +-------------+----------------------+---------+-------+
             | EVENT       | mysql.%              | NO      | NO    |
             | EVENT       | performance_schema.% | NO      | NO    |
             | EVENT       | information_schema.% | NO      | NO    |
             | FUNCTION    | mysql.%              | NO      | NO    |
             | FUNCTION    | performance_schema.% | NO      | NO    |
             | FUNCTION    | information_schema.% | NO      | NO    |
             | PROCEDURE   | mysql.%              | NO      | NO    |
             | PROCEDURE   | performance_schema.% | NO      | NO    |
             | PROCEDURE   | information_schema.% | NO      | NO    |
             | TABLE       | mysql.%              | NO      | NO    |
             | TABLE       | performance_schema.% | NO      | NO    |
             | TABLE       | information_schema.% | NO      | NO    |
             | TRIGGER     | mysql.%              | NO      | NO    |
             | TRIGGER     | performance_schema.% | NO      | NO    |
             | TRIGGER     | information_schema.% | NO      | NO    |
             +-------------+----------------------+---------+-------+
             15 rows in set (0.00 sec)

Empty set (0.00 sec)
             
             +---------------------------------------------------------------------------------------+-------+
             | disabled_instruments                                                                  | timed |
             +---------------------------------------------------------------------------------------+-------+
             | wait/synch/mutex/sql/TC_LOG_MMAP::LOCK_tc                                             | NO    |
             | wait/synch/mutex/sql/LOCK_des_key_file                                                | NO    |
             | wait/synch/mutex/sql/MYSQL_BIN_LOG::LOCK_commit                                       | NO    |
             ...
             | memory/sql/servers_cache                                                              | NO    |
             | memory/sql/udf_mem                                                                    | NO    |
             | wait/lock/metadata/sql/mdl                                                            | NO    |
             +---------------------------------------------------------------------------------------+-------+
             547 rows in set (0.00 sec)

Query OK, 0 rows affected (0.01 sec)
            '
    SQL SECURITY INVOKER
    NOT DETERMINISTIC
    READS SQL DATA
BEGIN
    SELECT @@performance_schema AS performance_schema_enabled;

-- In 5.7.6 and later the setup_actors table has an ENABLED column to
    -- specify whether the actor is enabled. Before that all actors matched
    -- in the setup_actors table were enabled.
    -- So only execute the query in 5.7.6+
    /*!50706
    SELECT CONCAT('\'', user, '\'@\'', host, '\'') AS disabled_users
      FROM performance_schema.setup_actors
     WHERE enabled = 'NO'
     ORDER BY disabled_users;
    */

SELECT object_type,
           CONCAT(object_schema, '.', object_name) AS objects,
           enabled,
           timed
      FROM performance_schema.setup_objects
     WHERE enabled = 'NO'
     ORDER BY object_type, objects;

SELECT name AS disabled_consumers
      FROM performance_schema.setup_consumers
     WHERE enabled = 'NO'
     ORDER BY disabled_consumers;

IF (in_show_threads) THEN
        SELECT IF(name = 'thread/sql/one_connection', 
                  CONCAT(processlist_user, '@', processlist_host), 
                  REPLACE(name, 'thread/', '')) AS disabled_threads,
        TYPE AS thread_type
          FROM performance_schema.threads
         WHERE INSTRUMENTED = 'NO'
         ORDER BY disabled_threads;
    END IF;

IF (in_show_instruments) THEN
        SELECT name AS disabled_instruments,
               timed
          FROM performance_schema.setup_instruments
         WHERE enabled = 'NO'
         ORDER BY disabled_instruments;
    END IF;
END$$

DELIMITER ;

DROP PROCEDURE IF EXISTS ps_setup_show_disabled_consumers;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' PROCEDURE ps_setup_show_disabled_consumers ()
    COMMENT '
             Description
             -----------

Shows all currently disabled consumers.

Parameters
             -----------

None

Example
             -----------

mysql> CALL sys.ps_setup_show_disabled_consumers();

+---------------------------+
             | disabled_consumers        |
             +---------------------------+
             | events_statements_current |
             | global_instrumentation    |
             | thread_instrumentation    |
             | statements_digest         |
             +---------------------------+
             4 rows in set (0.05 sec)
            '
    SQL SECURITY INVOKER
    DETERMINISTIC
    READS SQL DATA
BEGIN
    SELECT name AS disabled_consumers
      FROM performance_schema.setup_consumers
     WHERE enabled = 'NO'
     ORDER BY disabled_consumers;
END$$

DELIMITER ;

DROP PROCEDURE IF EXISTS ps_setup_show_disabled_instruments;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' PROCEDURE ps_setup_show_disabled_instruments ()
    COMMENT '
             Description
             -----------

Shows all currently disabled instruments.

Parameters
             -----------

None

Example
             -----------

mysql> CALL sys.ps_setup_show_disabled_instruments();
            '
    SQL SECURITY INVOKER
    DETERMINISTIC
    READS SQL DATA
BEGIN
    SELECT name AS disabled_instruments, timed
      FROM performance_schema.setup_instruments
     WHERE enabled = 'NO'
     ORDER BY disabled_instruments;
END$$

DELIMITER ;

DROP PROCEDURE IF EXISTS ps_setup_show_enabled;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' PROCEDURE ps_setup_show_enabled (
        IN in_show_instruments BOOLEAN,
        IN in_show_threads BOOLEAN
    )
    COMMENT '
             Description
             -----------

Shows all currently enabled Performance Schema configuration.

Parameters
             -----------

in_show_instruments (BOOLEAN):
               Whether to print enabled instruments (can print many items)

in_show_threads (BOOLEAN):
               Whether to print enabled threads

Example
             -----------

mysql> CALL sys.ps_setup_show_enabled(TRUE, TRUE);
             +----------------------------+
             | performance_schema_enabled |
             +----------------------------+
             |                          1 |
             +----------------------------+
             1 row in set (0.00 sec)

+---------------+
             | enabled_users |
             +---------------+
             | \'%\'@\'%\'       |
             +---------------+
             1 row in set (0.01 sec)

+-------------+---------+---------+-------+
             | object_type | objects | enabled | timed |
             +-------------+---------+---------+-------+
             | EVENT       | %.%     | YES     | YES   |
             | FUNCTION    | %.%     | YES     | YES   |
             | PROCEDURE   | %.%     | YES     | YES   |
             | TABLE       | %.%     | YES     | YES   |
             | TRIGGER     | %.%     | YES     | YES   |
             +-------------+---------+---------+-------+
             5 rows in set (0.01 sec)

+-------------------------------------+-------+
             | enabled_instruments                 | timed |
             +-------------------------------------+-------+
             | wait/io/file/sql/map                | YES   |
             | wait/io/file/sql/binlog             | YES   |
             ...
             | statement/com/Error                 | YES   |
             | statement/com/                      | YES   |
             | idle                                | YES   |
             +-------------------------------------+-------+
             210 rows in set (0.08 sec)

Query OK, 0 rows affected (0.89 sec)
            '
    SQL SECURITY INVOKER
    DETERMINISTIC
    READS SQL DATA
BEGIN
    SELECT @@performance_schema AS performance_schema_enabled;

-- In 5.7.6 and later the setup_actors table has an ENABLED column to
    -- specify whether the actor is enabled. Before that all actors matched
    -- in the setup_actors table were enabled.
    SELECT CONCAT('\'', user, '\'@\'', host, '\'') AS enabled_users
      FROM performance_schema.setup_actors
      WHERE enabled = 'YES'
     ORDER BY enabled_users;

SELECT object_type,
           CONCAT(object_schema, '.', object_name) AS objects,
           enabled,
           timed
      FROM performance_schema.setup_objects
     WHERE enabled = 'YES'
     ORDER BY object_type, objects;

SELECT name AS enabled_consumers
      FROM performance_schema.setup_consumers
     WHERE enabled = 'YES'
     ORDER BY enabled_consumers;

IF (in_show_threads) THEN
        SELECT IF(name = 'thread/sql/one_connection', 
                  CONCAT(processlist_user, '@', processlist_host), 
                  REPLACE(name, 'thread/', '')) AS enabled_threads,
        TYPE AS thread_type
          FROM performance_schema.threads
         WHERE INSTRUMENTED = 'YES' AND name <> 'thread/innodb/thread_pool_thread'
         ORDER BY enabled_threads;
    END IF;

IF (in_show_instruments) THEN
        SELECT name AS enabled_instruments,
               timed
          FROM performance_schema.setup_instruments
         WHERE enabled = 'YES'
         ORDER BY enabled_instruments;
    END IF;
END$$

DELIMITER ;

DROP PROCEDURE IF EXISTS ps_setup_show_enabled_consumers;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' PROCEDURE ps_setup_show_enabled_consumers ()
    COMMENT '
             Description
             -----------

Shows all currently enabled consumers.

Parameters
             -----------

None

Example
             -----------

mysql> CALL sys.ps_setup_show_enabled_consumers();

+---------------------------+
             | enabled_consumers         |
             +---------------------------+
             | events_statements_current |
             | global_instrumentation    |
             | thread_instrumentation    |
             | statements_digest         |
             +---------------------------+
             4 rows in set (0.05 sec)
            '
    SQL SECURITY INVOKER
    DETERMINISTIC
    READS SQL DATA
BEGIN
    SELECT name AS enabled_consumers
      FROM performance_schema.setup_consumers
     WHERE enabled = 'YES'
     ORDER BY enabled_consumers;
END$$

DELIMITER ;

DROP PROCEDURE IF EXISTS ps_setup_show_enabled_instruments;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' PROCEDURE ps_setup_show_enabled_instruments ()
    COMMENT '
             Description
             -----------

Shows all currently enabled instruments.

Parameters
             -----------

None

Example
             -----------

mysql> CALL sys.ps_setup_show_enabled_instruments();
            '
    SQL SECURITY INVOKER
    DETERMINISTIC
    READS SQL DATA
BEGIN
    SELECT name AS enabled_instruments, timed
      FROM performance_schema.setup_instruments
     WHERE enabled = 'YES'
     ORDER BY enabled_instruments;
END$$

DELIMITER ;

DROP PROCEDURE IF EXISTS ps_truncate_all_tables;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' PROCEDURE ps_truncate_all_tables (
        IN in_verbose BOOLEAN
    )
    COMMENT '
             Description
             -----------

Truncates all summary tables within Performance Schema, 
             resetting all aggregated instrumentation as a snapshot.

Parameters
             -----------

in_verbose (BOOLEAN):
               Whether to print each TRUNCATE statement before running

Example
             -----------

mysql> CALL sys.ps_truncate_all_tables(false);
             +---------------------+
             | summary             |
             +---------------------+
             | Truncated 44 tables |
             +---------------------+
             1 row in set (0.10 sec)

Query OK, 0 rows affected (0.10 sec)
            '
    SQL SECURITY INVOKER
    DETERMINISTIC
    MODIFIES SQL DATA
BEGIN
    DECLARE v_done INT DEFAULT FALSE;
    DECLARE v_total_tables INT DEFAULT 0;
    DECLARE v_ps_table VARCHAR(64);
    DECLARE ps_tables CURSOR FOR
        SELECT table_name 
          FROM INFORMATION_SCHEMA.TABLES 
         WHERE table_schema = 'performance_schema' 
           AND (table_name LIKE '%summary%' 
            OR table_name LIKE '%history%');
    DECLARE CONTINUE HANDLER FOR NOT FOUND SET v_done = TRUE;

OPEN ps_tables;

ps_tables_loop: LOOP
        FETCH ps_tables INTO v_ps_table;
        IF v_done THEN
          LEAVE ps_tables_loop;
        END IF;

SET @truncate_stmt := CONCAT('TRUNCATE TABLE performance_schema.', v_ps_table);
        IF in_verbose THEN
            SELECT CONCAT('Running: ', @truncate_stmt) AS status;
        END IF;

PREPARE truncate_stmt FROM @truncate_stmt;
        EXECUTE truncate_stmt;
        DEALLOCATE PREPARE truncate_stmt;

SET v_total_tables = v_total_tables + 1;
    END LOOP;

CLOSE ps_tables;

SELECT CONCAT('Truncated ', v_total_tables, ' tables') AS summary;

END$$

DELIMITER ;

-- Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
-- 
-- This program is free software; you can redistribute it and/or modify
-- it under the terms of the GNU General Public License as published by
-- the Free Software Foundation; version 2 of the License.
-- 
-- This program is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-- GNU General Public License for more details.
-- 
-- You should have received a copy of the GNU General Public License
-- along with this program; if not, write to the Free Software
-- Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

DROP PROCEDURE IF EXISTS statement_performance_analyzer;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' PROCEDURE statement_performance_analyzer (
        IN in_action ENUM('snapshot', 'overall', 'delta', 'create_table', 'create_tmp', 'save', 'cleanup'),
        IN in_table VARCHAR(129),
        IN in_views SET ('with_runtimes_in_95th_percentile', 'analysis', 'with_errors_or_warnings', 'with_full_table_scans', 'with_sorting', 'with_temp_tables', 'custom')
    )
    COMMENT '
             Description
             -----------

Create a report of the statements running on the server.

The views are calculated based on the overall and/or delta activity.
             
             Requires the SUPER privilege for "SET sql_log_bin = 0;".

Parameters
             -----------

in_action (ENUM(''snapshot'', ''overall'', ''delta'', ''create_tmp'', ''create_table'', ''save'', ''cleanup'')):
               The action to take. Supported actions are:
                 * snapshot      Store a snapshot. The default is to make a snapshot of the current content of
                                 performance_schema.events_statements_summary_by_digest, but by setting in_table
                                 this can be overwritten to copy the content of the specified table.
                                 The snapshot is stored in the sys.tmp_digests temporary table.
                 * overall       Generate analyzis based on the content specified by in_table. For the overall analyzis,
                                 in_table can be NOW() to use a fresh snapshot. This will overwrite an existing snapshot.
                                 Use NULL for in_table to use the existing snapshot. If in_table IS NULL and no snapshot
                                 exists, a new will be created.
                                 See also in_views and @sys.statement_performance_analyzer.limit.
                 * delta         Generate a delta analysis. The delta will be calculated between the reference table in
                                 in_table and the snapshot. An existing snapshot must exist.
                                 The action uses the sys.tmp_digests_delta temporary table.
                                 See also in_views and @sys.statement_performance_analyzer.limit.
                 * create_table  Create a regular table suitable for storing the snapshot for later use, e.g. for
                                 calculating deltas.
                 * create_tmp    Create a temporary table suitable for storing the snapshot for later use, e.g. for
                                 calculating deltas.
                 * save          Save the snapshot in the table specified by in_table. The table must exists and have
                                 the correct structure.
                                 If no snapshot exists, a new is created.
                 * cleanup       Remove the temporary tables used for the snapshot and delta.

in_table (VARCHAR(129)):
               The table argument used for some actions. Use the format ''db1.t1'' or ''t1'' without using any backticks (`)
               for quoting. Periods (.) are not supported in the database and table names.
               
               The meaning of the table for each action supporting the argument is:

* snapshot      The snapshot is created based on the specified table. Set to NULL or NOW() to use
                                 the current content of performance_schema.events_statements_summary_by_digest.
                 * overall       The table with the content to create the overall analyzis for. The following values
                                 can be used:
                                   - A table name - use the content of that table.
                                   - NOW()        - create a fresh snapshot and overwrite the existing snapshot.
                                   - NULL         - use the last stored snapshot.
                 * delta         The table name is mandatory and specified the reference view to compare the currently
                                 stored snapshot against. If no snapshot exists, a new will be created.
                 * create_table  The name of the regular table to create.
                 * create_tmp    The name of the temporary table to create.
                 * save          The name of the table to save the currently stored snapshot into.

in_views (SET (''with_runtimes_in_95th_percentile'', ''analysis'', ''with_errors_or_warnings'',
                            ''with_full_table_scans'', ''with_sorting'', ''with_temp_tables'', ''custom''))
               Which views to include:

* with_runtimes_in_95th_percentile  Based on the sys.statements_with_runtimes_in_95th_percentile view
                 * analysis                          Based on the sys.statement_analysis view
                 * with_errors_or_warnings           Based on the sys.statements_with_errors_or_warnings view
                 * with_full_table_scans             Based on the sys.statements_with_full_table_scans view
                 * with_sorting                      Based on the sys.statements_with_sorting view
                 * with_temp_tables                  Based on the sys.statements_with_temp_tables view
                 * custom                            Use a custom view. This view must be specified in @sys.statement_performance_analyzer.view to an existing view or a query

Default is to include all except ''custom''.

Configuration Options
             ----------------------

sys.statement_performance_analyzer.limit
               The maximum number of rows to include for the views that does not have a built-in limit (e.g. the 95th percentile view).
               If not set the limit is 100.

sys.statement_performance_analyzer.view
               Used together with the ''custom'' view. If the value contains a space, it is considered a query, otherwise it must be
               an existing view querying the performance_schema.events_statements_summary_by_digest table. There cannot be any limit
               clause including in the query or view definition if @sys.statement_performance_analyzer.limit > 0.
               If specifying a view, use the same format as for in_table.

sys.debug
               Whether to provide debugging output.
               Default is ''OFF''. Set to ''ON'' to include.

Example
             --------

To create a report with the queries in the 95th percentile since last truncate of performance_schema.events_statements_summary_by_digest
             and the delta for a 1 minute period:

1. Create a temporary table to store the initial snapshot.
                2. Create the initial snapshot.
                3. Save the initial snapshot in the temporary table.
                4. Wait one minute.
                5. Create a new snapshot.
                6. Perform analyzis based on the new snapshot.
                7. Perform analyzis based on the delta between the initial and new snapshots.

mysql> CALL sys.statement_performance_analyzer(''create_tmp'', ''mydb.tmp_digests_ini'', NULL);
             Query OK, 0 rows affected (0.08 sec)

mysql> CALL sys.statement_performance_analyzer(''snapshot'', NULL, NULL);
             Query OK, 0 rows affected (0.02 sec)

mysql> CALL sys.statement_performance_analyzer(''save'', ''mydb.tmp_digests_ini'', NULL);
             Query OK, 0 rows affected (0.00 sec)

mysql> DO SLEEP(60);
             Query OK, 0 rows affected (1 min 0.00 sec)

mysql> CALL sys.statement_performance_analyzer(''snapshot'', NULL, NULL);
             Query OK, 0 rows affected (0.02 sec)

mysql> CALL sys.statement_performance_analyzer(''overall'', NULL, ''with_runtimes_in_95th_percentile'');
             +-----------------------------------------+
             | Next Output                             |
             +-----------------------------------------+
             | Queries with Runtime in 95th Percentile |
             +-----------------------------------------+
             1 row in set (0.05 sec)

...

mysql> CALL sys.statement_performance_analyzer(''delta'', ''mydb.tmp_digests_ini'', ''with_runtimes_in_95th_percentile'');
             +-----------------------------------------+
             | Next Output                             |
             +-----------------------------------------+
             | Queries with Runtime in 95th Percentile |
             +-----------------------------------------+
             1 row in set (0.03 sec)

...

To create an overall report of the 95th percentile queries and the top 10 queries with full table scans:

mysql> CALL sys.statement_performance_analyzer(''snapshot'', NULL, NULL);
             Query OK, 0 rows affected (0.01 sec)

mysql> SET @sys.statement_performance_analyzer.limit = 10;
             Query OK, 0 rows affected (0.00 sec)

mysql> CALL sys.statement_performance_analyzer(''overall'', NULL, ''with_runtimes_in_95th_percentile,with_full_table_scans'');
             +-----------------------------------------+
             | Next Output                             |
             +-----------------------------------------+
             | Queries with Runtime in 95th Percentile |
             +-----------------------------------------+
             1 row in set (0.01 sec)

...

+-------------------------------------+
             | Next Output                         |
             +-------------------------------------+
             | Top 10 Queries with Full Table Scan |
             +-------------------------------------+
             1 row in set (0.09 sec)

...

Use a custom view showing the top 10 query sorted by total execution time refreshing the view every minute using
             the watch command in Linux.

mysql> CREATE OR REPLACE VIEW mydb.my_statements AS
                 -> SELECT sys.format_statement(DIGEST_TEXT) AS query,
                 ->        SCHEMA_NAME AS db,
                 ->        COUNT_STAR AS exec_count,
                 ->        sys.format_time(SUM_TIMER_WAIT) AS total_latency,
                 ->        sys.format_time(AVG_TIMER_WAIT) AS avg_latency,
                 ->        ROUND(IFNULL(SUM_ROWS_SENT / NULLIF(COUNT_STAR, 0), 0)) AS rows_sent_avg,
                 ->        ROUND(IFNULL(SUM_ROWS_EXAMINED / NULLIF(COUNT_STAR, 0), 0)) AS rows_examined_avg,
                 ->        ROUND(IFNULL(SUM_ROWS_AFFECTED / NULLIF(COUNT_STAR, 0), 0)) AS rows_affected_avg,
                 ->        DIGEST AS digest
                 ->   FROM performance_schema.events_statements_summary_by_digest
                 -> ORDER BY SUM_TIMER_WAIT DESC;
             Query OK, 0 rows affected (0.01 sec)

mysql> CALL sys.statement_performance_analyzer(''create_table'', ''mydb.digests_prev'', NULL);
             Query OK, 0 rows affected (0.10 sec)

shell$ watch -n 60 "mysql sys --table -e \"
             > SET @sys.statement_performance_analyzer.view = ''mydb.my_statements'';
             > SET @sys.statement_performance_analyzer.limit = 10;
             > CALL statement_performance_analyzer(''snapshot'', NULL, NULL);
             > CALL statement_performance_analyzer(''delta'', ''mydb.digests_prev'', ''custom'');
             > CALL statement_performance_analyzer(''save'', ''mydb.digests_prev'', NULL);
             > \""

Every 60.0s: mysql sys --table -e "                                                                                                   ...  Mon Dec 22 10:58:51 2014

+----------------------------------+
             | Next Output                      |
             +----------------------------------+
             | Top 10 Queries Using Custom View |
             +----------------------------------+
             +-------------------+-------+------------+---------------+-------------+---------------+-------------------+-------------------+----------------------------------+
             | query             | db    | exec_count | total_latency | avg_latency | rows_sent_avg | rows_examined_avg | rows_affected_avg | digest                           |
             +-------------------+-------+------------+---------------+-------------+---------------+-------------------+-------------------+----------------------------------+
             ...
            '
    SQL SECURITY INVOKER
    NOT DETERMINISTIC
    CONTAINS SQL
BEGIN
    DECLARE v_table_exists, v_tmp_digests_table_exists, v_custom_view_exists ENUM('', 'BASE TABLE', 'VIEW', 'TEMPORARY') DEFAULT '';
    DECLARE v_this_thread_enabled ENUM('YES', 'NO');
    DECLARE v_force_new_snapshot BOOLEAN DEFAULT FALSE;
    DECLARE v_digests_table VARCHAR(133);
    DECLARE v_quoted_table, v_quoted_custom_view VARCHAR(133) DEFAULT '';
    DECLARE v_table_db, v_table_name, v_custom_db, v_custom_name VARCHAR(64);
    DECLARE v_digest_table_template, v_checksum_ref, v_checksum_table text;
    DECLARE v_sql longtext;
    -- Maximum supported length for MESSAGE_TEXT with the SIGNAL command is 128 chars.
    DECLARE v_error_msg VARCHAR(128);

-- Don't instrument this thread
    SELECT INSTRUMENTED INTO v_this_thread_enabled FROM performance_schema.threads WHERE PROCESSLIST_ID = CONNECTION_ID();
    IF (v_this_thread_enabled = 'YES') THEN
        CALL sys.ps_setup_disable_thread(CONNECTION_ID());
    END IF;

-- Temporary table are used - disable sql_log_bin if necessary to prevent them replicating
    SET @log_bin := @@sql_log_bin;
    IF (@log_bin = 1) THEN
        SET sql_log_bin = 0;
    END IF;

-- Set configuration options
    IF (@sys.statement_performance_analyzer.limit IS NULL) THEN
        SET @sys.statement_performance_analyzer.limit = sys.sys_get_config('statement_performance_analyzer.limit', '100');
    END IF;
    IF (@sys.debug IS NULL) THEN
        SET @sys.debug                                = sys.sys_get_config('debug'                               , 'OFF');
    END IF;

-- If in_table is set, break in_table into a db and table component and check whether it exists
    -- in_table = NOW() is considered like it's not set.
    IF (in_table = 'NOW()') THEN
        SET v_force_new_snapshot = TRUE,
            in_table             = NULL;
    ELSEIF (in_table IS NOT NULL) THEN
        IF (NOT INSTR(in_table, '.')) THEN
            -- No . in the table name - use current database
            -- DATABASE() will be the database of the procedure
            SET v_table_db   = DATABASE(),
                v_table_name = in_table;
        ELSE
            SET v_table_db   = SUBSTRING_INDEX(in_table, '.', 1);
            SET v_table_name = SUBSTRING(in_table, CHAR_LENGTH(v_table_db)+2);
        END IF;

SET v_quoted_table = CONCAT('`', v_table_db, '`.`', v_table_name, '`');

IF (@sys.debug = 'ON') THEN
            SELECT CONCAT('in_table is: db = ''', v_table_db, ''', table = ''', v_table_name, '''') AS 'Debug';
        END IF;

IF (v_table_db = DATABASE() AND (v_table_name = 'tmp_digests' OR v_table_name = 'tmp_digests_delta')) THEN
            SET v_error_msg = CONCAT('Invalid value for in_table: ', v_quoted_table, ' is reserved table name.');
            SIGNAL SQLSTATE '45000'
               SET MESSAGE_TEXT = v_error_msg;
        END IF;

CALL sys.table_exists(v_table_db, v_table_name, v_table_exists);
        IF (@sys.debug = 'ON') THEN
            SELECT CONCAT('v_table_exists = ', v_table_exists) AS 'Debug';
        END IF;

IF (v_table_exists = 'BASE TABLE') THEN
            -- Verify that the table has the correct table definition
            -- This can only be done for base tables as temporary aren't in information_schema.COLUMNS.
            -- This also minimises the risk of using a production table.
            SET v_checksum_ref = (
                 SELECT GROUP_CONCAT(CONCAT(COLUMN_NAME, COLUMN_TYPE) ORDER BY ORDINAL_POSITION) AS Checksum
                   FROM information_schema.COLUMNS
                  WHERE TABLE_SCHEMA = 'performance_schema' AND TABLE_NAME = 'events_statements_summary_by_digest'
                ),
                v_checksum_table = (
                 SELECT GROUP_CONCAT(CONCAT(COLUMN_NAME, COLUMN_TYPE) ORDER BY ORDINAL_POSITION) AS Checksum
                   FROM information_schema.COLUMNS
                  WHERE TABLE_SCHEMA = v_table_db AND TABLE_NAME = v_table_name
                );

IF (v_checksum_ref <> v_checksum_table) THEN
                -- The table does not have the correct definition, so abandon
                SET v_error_msg = CONCAT('The table ',
                                         IF(CHAR_LENGTH(v_quoted_table) > 93, CONCAT('...', SUBSTRING(v_quoted_table, -90)), v_quoted_table),
                                         ' has the wrong definition.');
                SIGNAL SQLSTATE '45000'
                   SET MESSAGE_TEXT = v_error_msg;
            END IF;
        END IF;
    END IF;

IF (in_views IS NULL OR in_views = '') THEN
        -- Set to default
        SET in_views = 'with_runtimes_in_95th_percentile,analysis,with_errors_or_warnings,with_full_table_scans,with_sorting,with_temp_tables';
    END IF;

-- Validate settings
    CALL sys.table_exists(DATABASE(), 'tmp_digests', v_tmp_digests_table_exists);
    IF (@sys.debug = 'ON') THEN
        SELECT CONCAT('v_tmp_digests_table_exists = ', v_tmp_digests_table_exists) AS 'Debug';
    END IF;

CASE
        WHEN in_action IN ('snapshot', 'overall') THEN
            -- in_table must be NULL, NOW(), or an existing table
            IF (in_table IS NOT NULL) THEN
                IF (NOT v_table_exists IN ('TEMPORARY', 'BASE TABLE')) THEN
                    SET v_error_msg = CONCAT('The ', in_action, ' action requires in_table to be NULL, NOW() or specify an existing table.',
                                             ' The table ',
                                             IF(CHAR_LENGTH(v_quoted_table) > 16, CONCAT('...', SUBSTRING(v_quoted_table, -13)), v_quoted_table),
                                             ' does not exist.');
                    SIGNAL SQLSTATE '45000'
                       SET MESSAGE_TEXT = v_error_msg;
                END IF;
            END IF;

WHEN in_action IN ('delta', 'save') THEN
            -- in_table must be an existing table
            IF (v_table_exists NOT IN ('TEMPORARY', 'BASE TABLE')) THEN
                SET v_error_msg = CONCAT('The ', in_action, ' action requires in_table to be an existing table.',
                                         IF(in_table IS NOT NULL, CONCAT(' The table ',
                                             IF(CHAR_LENGTH(v_quoted_table) > 39, CONCAT('...', SUBSTRING(v_quoted_table, -36)), v_quoted_table),
                                             ' does not exist.'), ''));
                SIGNAL SQLSTATE '45000'
                   SET MESSAGE_TEXT = v_error_msg;
            END IF;
            
            IF (in_action = 'delta' AND v_tmp_digests_table_exists <> 'TEMPORARY') THEN
                SIGNAL SQLSTATE '45000'
                   SET MESSAGE_TEXT = 'An existing snapshot generated with the statement_performance_analyzer() must exist.';
            END IF;
        WHEN in_action = 'create_tmp' THEN
            -- in_table must not exists as a temporary table
            IF (v_table_exists = 'TEMPORARY') THEN
                SET v_error_msg = CONCAT('Cannot create the table ',
                                         IF(CHAR_LENGTH(v_quoted_table) > 72, CONCAT('...', SUBSTRING(v_quoted_table, -69)), v_quoted_table),
                                         ' as it already exists.');
                SIGNAL SQLSTATE '45000'
                   SET MESSAGE_TEXT = v_error_msg;
            END IF;

WHEN in_action = 'create_table' THEN
            -- in_table must not exists at all
            IF (v_table_exists <> '') THEN
                SET v_error_msg = CONCAT('Cannot create the table ',
                                         IF(CHAR_LENGTH(v_quoted_table) > 52, CONCAT('...', SUBSTRING(v_quoted_table, -49)), v_quoted_table),
                                         ' as it already exists',
                                         IF(v_table_exists = 'TEMPORARY', ' as a temporary table.', '.'));
                SIGNAL SQLSTATE '45000'
                   SET MESSAGE_TEXT = v_error_msg;
            END IF;

WHEN in_action = 'cleanup' THEN
            -- doesn't use any of the arguments 
            DO (SELECT 1);
        ELSE
            SIGNAL SQLSTATE '45000'
               SET MESSAGE_TEXT = 'Unknown action. Supported actions are: cleanup, create_table, create_tmp, delta, overall, save, snapshot';
    END CASE;

SET v_digest_table_template = 'CREATE %{TEMPORARY}TABLE %{TABLE_NAME} (
  `SCHEMA_NAME` varchar(64) DEFAULT NULL,
  `DIGEST` varchar(32) DEFAULT NULL,
  `DIGEST_TEXT` longtext,
  `COUNT_STAR` bigint(20) unsigned NOT NULL,
  `SUM_TIMER_WAIT` bigint(20) unsigned NOT NULL,
  `MIN_TIMER_WAIT` bigint(20) unsigned NOT NULL,
  `AVG_TIMER_WAIT` bigint(20) unsigned NOT NULL,
  `MAX_TIMER_WAIT` bigint(20) unsigned NOT NULL,
  `SUM_LOCK_TIME` bigint(20) unsigned NOT NULL,
  `SUM_ERRORS` bigint(20) unsigned NOT NULL,
  `SUM_WARNINGS` bigint(20) unsigned NOT NULL,
  `SUM_ROWS_AFFECTED` bigint(20) unsigned NOT NULL,
  `SUM_ROWS_SENT` bigint(20) unsigned NOT NULL,
  `SUM_ROWS_EXAMINED` bigint(20) unsigned NOT NULL,
  `SUM_CREATED_TMP_DISK_TABLES` bigint(20) unsigned NOT NULL,
  `SUM_CREATED_TMP_TABLES` bigint(20) unsigned NOT NULL,
  `SUM_SELECT_FULL_JOIN` bigint(20) unsigned NOT NULL,
  `SUM_SELECT_FULL_RANGE_JOIN` bigint(20) unsigned NOT NULL,
  `SUM_SELECT_RANGE` bigint(20) unsigned NOT NULL,
  `SUM_SELECT_RANGE_CHECK` bigint(20) unsigned NOT NULL,
  `SUM_SELECT_SCAN` bigint(20) unsigned NOT NULL,
  `SUM_SORT_MERGE_PASSES` bigint(20) unsigned NOT NULL,
  `SUM_SORT_RANGE` bigint(20) unsigned NOT NULL,
  `SUM_SORT_ROWS` bigint(20) unsigned NOT NULL,
  `SUM_SORT_SCAN` bigint(20) unsigned NOT NULL,
  `SUM_NO_INDEX_USED` bigint(20) unsigned NOT NULL,
  `SUM_NO_GOOD_INDEX_USED` bigint(20) unsigned NOT NULL,
  `FIRST_SEEN` timestamp NULL DEFAULT NULL,
  `LAST_SEEN` timestamp NULL DEFAULT NULL,
  INDEX (SCHEMA_NAME, DIGEST)
) DEFAULT CHARSET=utf8';

-- Do the action
    -- The actions snapshot, ... requires a fresh snapshot - create it now
    IF (v_force_new_snapshot
           OR in_action = 'snapshot'
           OR (in_action = 'overall' AND in_table IS NULL)
           OR (in_action = 'save' AND v_tmp_digests_table_exists <> 'TEMPORARY')
       ) THEN
        IF (v_tmp_digests_table_exists = 'TEMPORARY') THEN
            IF (@sys.debug = 'ON') THEN
                SELECT 'DROP TEMPORARY TABLE IF EXISTS tmp_digests' AS 'Debug';
            END IF;
            DROP TEMPORARY TABLE IF EXISTS tmp_digests;
        END IF;
        CALL sys.execute_prepared_stmt(REPLACE(REPLACE(v_digest_table_template, '%{TEMPORARY}', 'TEMPORARY '), '%{TABLE_NAME}', 'tmp_digests'));

SET v_sql = CONCAT('INSERT INTO tmp_digests SELECT * FROM ',
                           IF(in_table IS NULL OR in_action = 'save', 'performance_schema.events_statements_summary_by_digest', v_quoted_table));
        CALL sys.execute_prepared_stmt(v_sql);
    END IF;

-- Go through the remaining actions
    IF (in_action IN ('create_table', 'create_tmp')) THEN
        IF (in_action = 'create_table') THEN
            CALL sys.execute_prepared_stmt(REPLACE(REPLACE(v_digest_table_template, '%{TEMPORARY}', ''), '%{TABLE_NAME}', v_quoted_table));
        ELSE
            CALL sys.execute_prepared_stmt(REPLACE(REPLACE(v_digest_table_template, '%{TEMPORARY}', 'TEMPORARY '), '%{TABLE_NAME}', v_quoted_table));
        END IF;
    ELSEIF (in_action = 'save') THEN
        CALL sys.execute_prepared_stmt(CONCAT('DELETE FROM ', v_quoted_table));
        CALL sys.execute_prepared_stmt(CONCAT('INSERT INTO ', v_quoted_table, ' SELECT * FROM tmp_digests'));
    ELSEIF (in_action = 'cleanup') THEN
        DROP TEMPORARY TABLE IF EXISTS sys.tmp_digests;
        DROP TEMPORARY TABLE IF EXISTS sys.tmp_digests_delta;
    ELSEIF (in_action IN ('overall', 'delta')) THEN
        -- These are almost the same - for delta calculate the delta in tmp_digests_delta and use that instead of tmp_digests.
        -- And overall allows overriding the table to use.
        IF (in_action = 'overall') THEN
            IF (in_table IS NULL) THEN
                SET v_digests_table = 'tmp_digests';
            ELSE
                SET v_digests_table = v_quoted_table;
            END IF;
        ELSE
            SET v_digests_table = 'tmp_digests_delta';
            DROP TEMPORARY TABLE IF EXISTS tmp_digests_delta;
            CREATE TEMPORARY TABLE tmp_digests_delta LIKE tmp_digests;
            SET v_sql = CONCAT('INSERT INTO tmp_digests_delta
SELECT `d_end`.`SCHEMA_NAME`,
       `d_end`.`DIGEST`,
       `d_end`.`DIGEST_TEXT`,
       `d_end`.`COUNT_STAR`-IFNULL(`d_start`.`COUNT_STAR`, 0) AS ''COUNT_STAR'',
       `d_end`.`SUM_TIMER_WAIT`-IFNULL(`d_start`.`SUM_TIMER_WAIT`, 0) AS ''SUM_TIMER_WAIT'',
       `d_end`.`MIN_TIMER_WAIT` AS ''MIN_TIMER_WAIT'',
       IFNULL((`d_end`.`SUM_TIMER_WAIT`-IFNULL(`d_start`.`SUM_TIMER_WAIT`, 0))/NULLIF(`d_end`.`COUNT_STAR`-IFNULL(`d_start`.`COUNT_STAR`, 0), 0), 0) AS ''AVG_TIMER_WAIT'',
       `d_end`.`MAX_TIMER_WAIT` AS ''MAX_TIMER_WAIT'',
       `d_end`.`SUM_LOCK_TIME`-IFNULL(`d_start`.`SUM_LOCK_TIME`, 0) AS ''SUM_LOCK_TIME'',
       `d_end`.`SUM_ERRORS`-IFNULL(`d_start`.`SUM_ERRORS`, 0) AS ''SUM_ERRORS'',
       `d_end`.`SUM_WARNINGS`-IFNULL(`d_start`.`SUM_WARNINGS`, 0) AS ''SUM_WARNINGS'',
       `d_end`.`SUM_ROWS_AFFECTED`-IFNULL(`d_start`.`SUM_ROWS_AFFECTED`, 0) AS ''SUM_ROWS_AFFECTED'',
       `d_end`.`SUM_ROWS_SENT`-IFNULL(`d_start`.`SUM_ROWS_SENT`, 0) AS ''SUM_ROWS_SENT'',
       `d_end`.`SUM_ROWS_EXAMINED`-IFNULL(`d_start`.`SUM_ROWS_EXAMINED`, 0) AS ''SUM_ROWS_EXAMINED'',
       `d_end`.`SUM_CREATED_TMP_DISK_TABLES`-IFNULL(`d_start`.`SUM_CREATED_TMP_DISK_TABLES`, 0) AS ''SUM_CREATED_TMP_DISK_TABLES'',
       `d_end`.`SUM_CREATED_TMP_TABLES`-IFNULL(`d_start`.`SUM_CREATED_TMP_TABLES`, 0) AS ''SUM_CREATED_TMP_TABLES'',
       `d_end`.`SUM_SELECT_FULL_JOIN`-IFNULL(`d_start`.`SUM_SELECT_FULL_JOIN`, 0) AS ''SUM_SELECT_FULL_JOIN'',
       `d_end`.`SUM_SELECT_FULL_RANGE_JOIN`-IFNULL(`d_start`.`SUM_SELECT_FULL_RANGE_JOIN`, 0) AS ''SUM_SELECT_FULL_RANGE_JOIN'',
       `d_end`.`SUM_SELECT_RANGE`-IFNULL(`d_start`.`SUM_SELECT_RANGE`, 0) AS ''SUM_SELECT_RANGE'',
       `d_end`.`SUM_SELECT_RANGE_CHECK`-IFNULL(`d_start`.`SUM_SELECT_RANGE_CHECK`, 0) AS ''SUM_SELECT_RANGE_CHECK'',
       `d_end`.`SUM_SELECT_SCAN`-IFNULL(`d_start`.`SUM_SELECT_SCAN`, 0) AS ''SUM_SELECT_SCAN'',
       `d_end`.`SUM_SORT_MERGE_PASSES`-IFNULL(`d_start`.`SUM_SORT_MERGE_PASSES`, 0) AS ''SUM_SORT_MERGE_PASSES'',
       `d_end`.`SUM_SORT_RANGE`-IFNULL(`d_start`.`SUM_SORT_RANGE`, 0) AS ''SUM_SORT_RANGE'',
       `d_end`.`SUM_SORT_ROWS`-IFNULL(`d_start`.`SUM_SORT_ROWS`, 0) AS ''SUM_SORT_ROWS'',
       `d_end`.`SUM_SORT_SCAN`-IFNULL(`d_start`.`SUM_SORT_SCAN`, 0) AS ''SUM_SORT_SCAN'',
       `d_end`.`SUM_NO_INDEX_USED`-IFNULL(`d_start`.`SUM_NO_INDEX_USED`, 0) AS ''SUM_NO_INDEX_USED'',
       `d_end`.`SUM_NO_GOOD_INDEX_USED`-IFNULL(`d_start`.`SUM_NO_GOOD_INDEX_USED`, 0) AS ''SUM_NO_GOOD_INDEX_USED'',
       `d_end`.`FIRST_SEEN`,
       `d_end`.`LAST_SEEN`
  FROM tmp_digests d_end
       LEFT OUTER JOIN ', v_quoted_table, ' d_start ON `d_start`.`DIGEST` = `d_end`.`DIGEST`
                                                    AND (`d_start`.`SCHEMA_NAME` = `d_end`.`SCHEMA_NAME`
                                                          OR (`d_start`.`SCHEMA_NAME` IS NULL AND `d_end`.`SCHEMA_NAME` IS NULL)
                                                        )
 WHERE `d_end`.`COUNT_STAR`-IFNULL(`d_start`.`COUNT_STAR`, 0) > 0');
            CALL sys.execute_prepared_stmt(v_sql);
        END IF;

IF (FIND_IN_SET('with_runtimes_in_95th_percentile', in_views)) THEN
            SELECT 'Queries with Runtime in 95th Percentile' AS 'Next Output';

DROP TEMPORARY TABLE IF EXISTS tmp_digest_avg_latency_distribution1;
            DROP TEMPORARY TABLE IF EXISTS tmp_digest_avg_latency_distribution2;
            DROP TEMPORARY TABLE IF EXISTS tmp_digest_95th_percentile_by_avg_us;

CREATE TEMPORARY TABLE tmp_digest_avg_latency_distribution1 (
              cnt bigint unsigned NOT NULL,
              avg_us decimal(21,0) NOT NULL,
              PRIMARY KEY (avg_us)
            ) ENGINE=InnoDB;

SET v_sql = CONCAT('INSERT INTO tmp_digest_avg_latency_distribution1
SELECT COUNT(*) cnt, 
       ROUND(avg_timer_wait/1000000) AS avg_us
  FROM ', v_digests_table, '
 GROUP BY avg_us');
            CALL sys.execute_prepared_stmt(v_sql);

CREATE TEMPORARY TABLE tmp_digest_avg_latency_distribution2 LIKE tmp_digest_avg_latency_distribution1;
            INSERT INTO tmp_digest_avg_latency_distribution2 SELECT * FROM tmp_digest_avg_latency_distribution1;

CREATE TEMPORARY TABLE tmp_digest_95th_percentile_by_avg_us (
              avg_us decimal(21,0) NOT NULL,
              percentile decimal(46,4) NOT NULL,
              PRIMARY KEY (avg_us)
            ) ENGINE=InnoDB;

SET v_sql = CONCAT('INSERT INTO tmp_digest_95th_percentile_by_avg_us
SELECT s2.avg_us avg_us,
       IFNULL(SUM(s1.cnt)/NULLIF((SELECT COUNT(*) FROM ', v_digests_table, '), 0), 0) percentile
  FROM tmp_digest_avg_latency_distribution1 AS s1
       JOIN tmp_digest_avg_latency_distribution2 AS s2 ON s1.avg_us <= s2.avg_us
 GROUP BY s2.avg_us
HAVING percentile > 0.95
 ORDER BY percentile
 LIMIT 1');
            CALL sys.execute_prepared_stmt(v_sql);

SET v_sql =
                REPLACE(
                    REPLACE(
                        (SELECT VIEW_DEFINITION
                           FROM information_schema.VIEWS
                          WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'statements_with_runtimes_in_95th_percentile'
                        ),
                        '`performance_schema`.`events_statements_summary_by_digest`',
                        v_digests_table
                    ),
                    'sys.x$ps_digest_95th_percentile_by_avg_us',
                    '`sys`.`x$ps_digest_95th_percentile_by_avg_us`'
              );
            CALL sys.execute_prepared_stmt(v_sql);

DROP TEMPORARY TABLE tmp_digest_avg_latency_distribution1;
            DROP TEMPORARY TABLE tmp_digest_avg_latency_distribution2;
            DROP TEMPORARY TABLE tmp_digest_95th_percentile_by_avg_us;
        END IF;

IF (FIND_IN_SET('analysis', in_views)) THEN
            SELECT CONCAT('Top ', @sys.statement_performance_analyzer.limit, ' Queries Ordered by Total Latency') AS 'Next Output';
            SET v_sql =
                REPLACE(
                    (SELECT VIEW_DEFINITION
                       FROM information_schema.VIEWS
                      WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'statement_analysis'
                    ),
                    '`performance_schema`.`events_statements_summary_by_digest`',
                    v_digests_table
                );
            IF (@sys.statement_performance_analyzer.limit > 0) THEN
                SET v_sql = CONCAT(v_sql, ' LIMIT ', @sys.statement_performance_analyzer.limit);
            END IF;
            CALL sys.execute_prepared_stmt(v_sql);
        END IF;

IF (FIND_IN_SET('with_errors_or_warnings', in_views)) THEN
            SELECT CONCAT('Top ', @sys.statement_performance_analyzer.limit, ' Queries with Errors') AS 'Next Output';
            SET v_sql =
                REPLACE(
                    (SELECT VIEW_DEFINITION
                       FROM information_schema.VIEWS
                      WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'statements_with_errors_or_warnings'
                    ),
                    '`performance_schema`.`events_statements_summary_by_digest`',
                    v_digests_table
                );
            IF (@sys.statement_performance_analyzer.limit > 0) THEN
                SET v_sql = CONCAT(v_sql, ' LIMIT ', @sys.statement_performance_analyzer.limit);
            END IF;
            CALL sys.execute_prepared_stmt(v_sql);
        END IF;

IF (FIND_IN_SET('with_full_table_scans', in_views)) THEN
            SELECT CONCAT('Top ', @sys.statement_performance_analyzer.limit, ' Queries with Full Table Scan') AS 'Next Output';
            SET v_sql =
                REPLACE(
                    (SELECT VIEW_DEFINITION
                       FROM information_schema.VIEWS
                      WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'statements_with_full_table_scans'
                    ),
                    '`performance_schema`.`events_statements_summary_by_digest`',
                    v_digests_table
                );
            IF (@sys.statement_performance_analyzer.limit > 0) THEN
                SET v_sql = CONCAT(v_sql, ' LIMIT ', @sys.statement_performance_analyzer.limit);
            END IF;
            CALL sys.execute_prepared_stmt(v_sql);
        END IF;

IF (FIND_IN_SET('with_sorting', in_views)) THEN
            SELECT CONCAT('Top ', @sys.statement_performance_analyzer.limit, ' Queries with Sorting') AS 'Next Output';
            SET v_sql =
                REPLACE(
                    (SELECT VIEW_DEFINITION
                       FROM information_schema.VIEWS
                      WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'statements_with_sorting'
                    ),
                    '`performance_schema`.`events_statements_summary_by_digest`',
                    v_digests_table
                );
            IF (@sys.statement_performance_analyzer.limit > 0) THEN
                SET v_sql = CONCAT(v_sql, ' LIMIT ', @sys.statement_performance_analyzer.limit);
            END IF;
            CALL sys.execute_prepared_stmt(v_sql);
        END IF;

IF (FIND_IN_SET('with_temp_tables', in_views)) THEN
            SELECT CONCAT('Top ', @sys.statement_performance_analyzer.limit, ' Queries with Internal Temporary Tables') AS 'Next Output';
            SET v_sql =
                REPLACE(
                    (SELECT VIEW_DEFINITION
                       FROM information_schema.VIEWS
                      WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'statements_with_temp_tables'
                    ),
                    '`performance_schema`.`events_statements_summary_by_digest`',
                    v_digests_table
                );
            IF (@sys.statement_performance_analyzer.limit > 0) THEN
                SET v_sql = CONCAT(v_sql, ' LIMIT ', @sys.statement_performance_analyzer.limit);
            END IF;
            CALL sys.execute_prepared_stmt(v_sql);
        END IF;

IF (FIND_IN_SET('custom', in_views)) THEN
            SELECT CONCAT('Top ', @sys.statement_performance_analyzer.limit, ' Queries Using Custom View') AS 'Next Output';

IF (@sys.statement_performance_analyzer.view IS NULL) THEN
                SET @sys.statement_performance_analyzer.view = sys.sys_get_config('statement_performance_analyzer.view', NULL);
            END IF;
            IF (@sys.statement_performance_analyzer.view IS NULL) THEN
                SIGNAL SQLSTATE '45000'
                   SET MESSAGE_TEXT = 'The @sys.statement_performance_analyzer.view user variable must be set with the view or query to use.';
            END IF;

IF (NOT INSTR(@sys.statement_performance_analyzer.view, ' ')) THEN
                -- No spaces, so can't be a query
                IF (NOT INSTR(@sys.statement_performance_analyzer.view, '.')) THEN
                    -- No . in the table name - use current database
                    -- DATABASE() will be the database of the procedure
                    SET v_custom_db   = DATABASE(),
                        v_custom_name = @sys.statement_performance_analyzer.view;
                ELSE
                    SET v_custom_db   = SUBSTRING_INDEX(@sys.statement_performance_analyzer.view, '.', 1);
                    SET v_custom_name = SUBSTRING(@sys.statement_performance_analyzer.view, CHAR_LENGTH(v_custom_db)+2);
                END IF;

CALL sys.table_exists(v_custom_db, v_custom_name, v_custom_view_exists);
                IF (v_custom_view_exists <> 'VIEW') THEN
                    SIGNAL SQLSTATE '45000'
                       SET MESSAGE_TEXT = 'The @sys.statement_performance_analyzer.view user variable is set but specified neither an existing view nor a query.';
                END IF;

SET v_sql =
                    REPLACE(
                        (SELECT VIEW_DEFINITION
                           FROM information_schema.VIEWS
                          WHERE TABLE_SCHEMA = v_custom_db AND TABLE_NAME = v_custom_name
                        ),
                        '`performance_schema`.`events_statements_summary_by_digest`',
                        v_digests_table
                    );
            ELSE
                SET v_sql = REPLACE(@sys.statement_performance_analyzer.view, '`performance_schema`.`events_statements_summary_by_digest`', v_digests_table);
            END IF;

IF (@sys.statement_performance_analyzer.limit > 0) THEN
                SET v_sql = CONCAT(v_sql, ' LIMIT ', @sys.statement_performance_analyzer.limit);
            END IF;

CALL sys.execute_prepared_stmt(v_sql);
        END IF;
    END IF;

-- Restore INSTRUMENTED for this thread
    IF (v_this_thread_enabled = 'YES') THEN
        CALL sys.ps_setup_enable_thread(CONNECTION_ID());
    END IF;

IF (@log_bin = 1) THEN
        SET sql_log_bin = @log_bin;
    END IF;
END$$

DELIMITER ;
-- Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
-- 
-- This program is free software; you can redistribute it and/or modify
-- it under the terms of the GNU General Public License as published by
-- the Free Software Foundation; version 2 of the License.
-- 
-- This program is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-- GNU General Public License for more details.
-- 
-- You should have received a copy of the GNU General Public License
-- along with this program; if not, write to the Free Software
-- Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

DROP PROCEDURE IF EXISTS table_exists;

DELIMITER $$

CREATE DEFINER='mariadb.sys'@'localhost' PROCEDURE table_exists (
        IN in_db VARCHAR(64), IN in_table VARCHAR(64),
        OUT out_exists ENUM('', 'BASE TABLE', 'VIEW', 'TEMPORARY', 'SEQUENCE', 'SYSTEM VIEW')
    )
    COMMENT '
             Description
             -----------

Tests whether the table specified in in_db and in_table exists either as a regular
             table, or as a temporary table. The returned value corresponds to the table that
             will be used, so if there''s both a temporary and a permanent table with the given
             name, then ''TEMPORARY'' will be returned.

Parameters
             -----------

in_db (VARCHAR(64)):
               The database name to check for the existence of the table in.

in_table (VARCHAR(64)):
               The name of the table to check the existence of.

out_exists ENUM('''', ''BASE TABLE'', ''VIEW'', ''TEMPORARY''):
               The return value: whether the table exists. The value is one of:
                 * ''''             - the table does not exist neither as a base table, view, sequence nor temporary table.
                 * ''BASE TABLE''   - the table name exists as a permanent base table table.
                 * ''VIEW''         - the table name exists as a view.
                 * ''TEMPORARY''    - the table name exists as a temporary table.
                 * ''SEQUENCE''     - the table name exists as a sequence.
                 * ''SYSTEM VIEW''  - the table name exists as a system view.

Example
             --------

mysql> CREATE DATABASE db1;
             Query OK, 1 row affected (0.07 sec)

mysql> use db1;
             Database changed
             mysql> CREATE TABLE t1 (id INT PRIMARY KEY);
             Query OK, 0 rows affected (0.08 sec)
             
             mysql> CREATE TABLE t2 (id INT PRIMARY KEY);
             Query OK, 0 rows affected (0.08 sec)
             
             mysql> CREATE view v_t1 AS SELECT * FROM t1;
             Query OK, 0 rows affected (0.00 sec)
             
             mysql> CREATE TEMPORARY TABLE t1 (id INT PRIMARY KEY);
             Query OK, 0 rows affected (0.00 sec)
             
             mysql> CALL sys.table_exists(''db1'', ''t1'', @exists); SELECT @exists;
             Query OK, 0 rows affected (0.00 sec)

mysql> CALL sys.table_exists(''db1'', ''v_t1'', @exists); SELECT @exists;
             Query OK, 0 rows affected (0.00 sec)

+---------+
             | @exists |
             +---------+
             | VIEW    |
             +---------+
             1 row in set (0.00 sec)

MariaDB [sys]> CALL sys.table_exists(''db1'', ''s'', @exists); SELECT @exists;
             Query OK, 0 rows affected (0.006 sec)

+----------+
             | @exists  |
             +----------+
             | SEQUENCE |
             +----------+
             1 row in set (0.000 sec)

MariaDB [sys]> CALL table_exists(''information_schema'', ''user_variables'', @exists); SELECT @exists;
             Query OK, 0 rows affected (0.003 sec)

+-------------+
             | @exists     |
             +-------------+
             | SYSTEM VIEW |
             +-------------+
             1 row in set (0.001 sec)

mysql> CALL sys.table_exists(''db1'', ''t3'', @exists); SELECT @exists;
             Query OK, 0 rows affected (0.01 sec)

+---------+
             | @exists |
             +---------+
             |         |
             +---------+
             1 row in set (0.00 sec)
            '
    SQL SECURITY INVOKER
    NOT DETERMINISTIC
    CONTAINS SQL
BEGIN
    DECLARE v_error BOOLEAN DEFAULT FALSE;
    DECLARE db_quoted VARCHAR(64);
    DECLARE table_quoted VARCHAR(64);
    DECLARE v_table_type VARCHAR(16) DEFAULT '';
    DECLARE v_system_db BOOLEAN
        DEFAULT LOWER(in_db) IN ('information_schema', 'performance_schema');
    DECLARE CONTINUE HANDLER FOR 1050 SET v_error = TRUE;
    DECLARE CONTINUE HANDLER FOR 1146 SET v_error = TRUE;

SET out_exists = '';
    SET db_quoted = sys.quote_identifier(in_db);
    SET table_quoted = sys.quote_identifier(in_table);

-- Verify whether the table name exists as a normal table
    IF (EXISTS(SELECT 1 FROM information_schema.TABLES WHERE TABLE_SCHEMA = in_db AND TABLE_NAME = in_table)) THEN
        -- Unfortunately the only way to determine whether there is also a temporary table is to try to create
        -- a temporary table with the same name. If it succeeds the table didn't exist as a temporary table.
        IF v_system_db = FALSE THEN
            SET @sys.tmp.table_exists.SQL = CONCAT('CREATE TEMPORARY TABLE ',
                                                    db_quoted,
                                                    '.',
                                                    table_quoted,
                                                    '(id INT PRIMARY KEY)');
            PREPARE stmt_create_table FROM @sys.tmp.table_exists.SQL;
            EXECUTE stmt_create_table;
            DEALLOCATE PREPARE stmt_create_table;

-- The temporary table was created, i.e. it didn't exist. Remove it again so we don't leave garbage around.
            SET @sys.tmp.table_exists.SQL = CONCAT('DROP TEMPORARY TABLE ',
                                                                db_quoted,
                                                                '.',
                                                                table_quoted);
            PREPARE stmt_drop_table FROM @sys.tmp.table_exists.SQL;
            EXECUTE stmt_drop_table;
            DEALLOCATE PREPARE stmt_drop_table;
        END IF;
        IF (v_error) THEN
            SET out_exists = 'TEMPORARY';
        ELSE
            SET v_table_type = (SELECT TABLE_TYPE FROM information_schema.TABLES WHERE TABLE_SCHEMA = in_db AND TABLE_NAME = in_table);
            -- Don't fail on table_type='SYSTEM VERSIONED'
            -- but return 'BASE TABLE' for compatibility with existing tooling
            IF v_table_type = 'SYSTEM VERSIONED' THEN
                SET out_exists = 'BASE TABLE';
            ELSE
                SET out_exists = v_table_type;
            END IF;
        END IF;
    ELSE
        -- Check whether a temporary table exists with the same name.
        -- If it does it's possible to SELECT from the table without causing an error.
        -- If it does not exist even a PREPARE using the table will fail.
        IF v_system_db = FALSE THEN
            SET @sys.tmp.table_exists.SQL = CONCAT('SELECT COUNT(*) FROM ',
                                                            db_quoted,
                                                            '.',
                                                            table_quoted);
            PREPARE stmt_select FROM @sys.tmp.table_exists.SQL;
            IF (NOT v_error) THEN
                DEALLOCATE PREPARE stmt_select;
                SET out_exists = 'TEMPORARY';
            END IF;
        END IF;
    END IF;
END$$

DELIMITER ;

SET @@sql_log_bin = @sql_log_bin;
use mysql;

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