+ Leap seconds information for time zones
+ utf8_general_ci
+
+
+ Time zone names
+ utf8_general_ci
+
+
+ Time zone transitions
+ utf8_general_ci
+
+
+ Time zone transition types
+ utf8_general_ci
+
+
+ Users and global privileges
+ utf8_bin
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+ utf8mb4_bin
+
+
+ PERFORMANCE_SCHEMA
+ utf8mb4_bin
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ PERFORMANCE_SCHEMA
+
+
+ 账户表
+ utf8mb4_general_ci
+
+
+ 日程--业务表
+ utf8_general_ci
+
+
+ 排班信息暂存表
+ utf8_general_ci
+
+
+ 岗位-业务表
+ utf8_general_ci
+
+
+ 班组--业务表
+ utf8_general_ci
+
+
+ 数据资源_范围表
+ utf8_general_ci
+
+
+ 数据权限_角色表
+ utf8_general_ci
+
+
+ utf8_general_ci
+
+
+ 资质
+ utf8_general_ci
+
+
+ 角色
+ utf8_general_ci
+
+
+ 排班规则
+ utf8_general_ci
+
+
+ 日程
+ utf8_general_ci
+
+
+ 岗位
+ utf8_general_ci
+
+
+ 规则岗位
+ utf8_general_ci
+
+
+ （班组下）的岗位
+ utf8_general_ci
+
+
+ 班组
+ utf8_general_ci
+
+
+ 岗位与员工关联 表-业务表
+ utf8_general_ci
+
+
+ 班组岗位关联--业务表
+ utf8_general_ci
+
+
+ 角色与数据权限关联表
+ utf8_general_ci
+
+
+ 关联表_数据权限_角色和组织
+ utf8_general_ci
+
+
+ 全局用户关联
+ utf8_general_ci
+
+
+ 科室班组关联
+ utf8_general_ci
+
+
+ 角色与数据权限关联表
+ utf8_general_ci
+
+
+ 角色资源关联
+ utf8_general_ci
+
+
+ 规则岗位关联
+ utf8_general_ci
+
+
+ 规则班组关联
+ utf8_general_ci
+
+
+ 日程规则关联
+ utf8_general_ci
+
+
+ 岗位资质关联
+ utf8_general_ci
+
+
+ 班组岗位关联
+ utf8_general_ci
+
+
+ 参数配置表
+ utf8mb4_general_ci
+
+
+ 配置参数值管理
+ utf8mb4_general_ci
+
+
+ 数据资源范围表
+ utf8_general_ci
+
+
+ 字典数据表
+ utf8mb4_general_ci
+
+
+ 字典类型表
+ utf8mb4_general_ci
+
+
+ 附件资源信息
+ utf8mb4_general_ci
+
+
+ pss-uat@%
+
+
+ 城市代码
+ utf8_general_ci
+
+
+ 部门表
+ utf8_general_ci
+
+
+ 预警时间配置表
+ utf8mb4_general_ci
+
+
+ 航班信息表
+ utf8mb4_general_ci
+
+
+ 航班三字码字典表
+ utf8_general_ci
+
+
+ 特殊旅客信息表
+ utf8mb4_general_ci
+
+
+ 服务工单表
+ utf8mb4_general_ci
+
+
+ 特殊服务类型字典表
+ utf8mb4_general_ci
+
+
+ 系统菜单管理
+ utf8_general_ci
+
+
+ 系统用户与角色对应关系
+ utf8_general_ci
+
+
+ 系统角色
+ utf8_general_ci
+
+
+ 系统角色与菜单对应关系
+ utf8_general_ci
+
+
+ utf8_general_ci
+
+
+
+ 1361
+ mysql.sys@localhost
+
+
+ 867
+ mysql.sys@localhost
+
+
+ 1154
+ mysql.sys@localhost
+
+
+ 1062
+ mysql.sys@localhost
+
+
+ 1619
+ mysql.sys@localhost
+
+
+ 1786
+ mysql.sys@localhost
+
+
+ 754
+ mysql.sys@localhost
+
+
+ 846
+ mysql.sys@localhost
+
+
+ 2174
+ mysql.sys@localhost
+
+
+ 1729
+ mysql.sys@localhost
+
+
+ 1588
+ mysql.sys@localhost
+
+
+ 953
+ mysql.sys@localhost
+
+
+ 2004
+ mysql.sys@localhost
+
+
+ 1925
+ mysql.sys@localhost
+
+
+ 1334
+ mysql.sys@localhost
+
+
+ 1297
+ mysql.sys@localhost
+
+
+ 1009
+ mysql.sys@localhost
+
+
+ 1297
+ mysql.sys@localhost
+
+
+ 1281
+ mysql.sys@localhost
+
+
+ 208
+ mysql.sys@localhost
+
+
+ 3475
+ mysql.sys@localhost
+
+
+ 2810
+ mysql.sys@localhost
+
+
+ 338
+ mysql.sys@localhost
+
+
+ 1845
+ mysql.sys@localhost
+
+
+ 1394
+ mysql.sys@localhost
+
+
+ 1057
+ mysql.sys@localhost
+
+
+ 1693
+ mysql.sys@localhost
+
+
+ 1673
+ mysql.sys@localhost
+
+
+ 1295
+ mysql.sys@localhost
+
+
+ 1836
+ mysql.sys@localhost
+
+
+ 731
+ mysql.sys@localhost
+
+
+ 664
+ mysql.sys@localhost
+
+
+ 1341
+ mysql.sys@localhost
+
+
+ 616
+ mysql.sys@localhost
+
+
+ 2841
+ mysql.sys@localhost
+
+
+ 1495
+ mysql.sys@localhost
+
+
+ 2301
+ mysql.sys@localhost
+
+
+ 1153
+ mysql.sys@localhost
+
+
+ 1700
+ mysql.sys@localhost
+
+
+ 1685
+ mysql.sys@localhost
+
+
+ 1610
+ mysql.sys@localhost
+
+
+ 867
+ mysql.sys@localhost
+
+
+ 1148
+ mysql.sys@localhost
+
+
+ 1062
+ mysql.sys@localhost
+
+
+ 1619
+ mysql.sys@localhost
+
+
+ 1786
+ mysql.sys@localhost
+
+
+ 60
+ mysql.sys@localhost
+
+
+ 1354
+ mysql.sys@localhost
+
+
+ 1298
+ mysql.sys@localhost
+
+
+ 1263
+ mysql.sys@localhost
+
+
+ 1354
+ mysql.sys@localhost
+
+
+ 902
+ mysql.sys@localhost
+
+
+ 1234
+ mysql.sys@localhost
+
+
+ 846
+ mysql.sys@localhost
+
+
+ 1112
+ mysql.sys@localhost
+
+
+ 1020
+ mysql.sys@localhost
+
+
+ 1556
+ mysql.sys@localhost
+
+
+ 1723
+ mysql.sys@localhost
+
+
+ 730
+ mysql.sys@localhost
+
+
+ 822
+ mysql.sys@localhost
+
+
+ 2122
+ mysql.sys@localhost
+
+
+ 1645
+ mysql.sys@localhost
+
+
+ 1457
+ mysql.sys@localhost
+
+
+ 848
+ mysql.sys@localhost
+
+
+ 1810
+ mysql.sys@localhost
+
+
+ 1711
+ mysql.sys@localhost
+
+
+ 1270
+ mysql.sys@localhost
+
+
+ 1209
+ mysql.sys@localhost
+
+
+ 919
+ mysql.sys@localhost
+
+
+ 1209
+ mysql.sys@localhost
+
+
+ 1193
+ mysql.sys@localhost
+
+
+ 186
+ mysql.sys@localhost
+
+
+ 2631
+ mysql.sys@localhost
+
+
+ 510
+ mysql.sys@localhost
+
+
+ 215
+ mysql.sys@localhost
+
+
+ 1057
+ mysql.sys@localhost
+
+
+ 636
+ mysql.sys@localhost
+
+
+ 1310
+ mysql.sys@localhost
+
+
+ 1647
+ mysql.sys@localhost
+
+
+ 1083
+ mysql.sys@localhost
+
+
+ 1579
+ mysql.sys@localhost
+
+
+ 710
+ mysql.sys@localhost
+
+
+ 1403
+ mysql.sys@localhost
+
+
+ 2731
+ mysql.sys@localhost
+
+
+ 1469
+ mysql.sys@localhost
+
+
+ 2233
+ mysql.sys@localhost
+
+
+ 1064
+ mysql.sys@localhost
+
+
+ 1653
+ mysql.sys@localhost
+
+
+ 1638
+ mysql.sys@localhost
+
+
+ 1503
+ mysql.sys@localhost
+
+
+ 846
+ mysql.sys@localhost
+
+
+ 1106
+ mysql.sys@localhost
+
+
+ 1020
+ mysql.sys@localhost
+
+
+ 1556
+ mysql.sys@localhost
+
+
+ 1723
+ mysql.sys@localhost
+
+
+ 1234
+ mysql.sys@localhost
+
+
+ 1214
+ mysql.sys@localhost
+
+
+ 1200
+ mysql.sys@localhost
+
+
+ 1291
+ mysql.sys@localhost
+
+
+ 839
+ mysql.sys@localhost
+
+
+
+ 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> SHOW DATABASES;
+ +--------------------+
+ | Database |
+ +--------------------+
+ | information_schema |
+ | mysql |
+ | performance_schema |
+ | sys |
+ | test |
+ +--------------------+
+ 5 rows in set (0.00 sec)
+
+ 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 DATABASES;
+ +--------------------+
+ | Database |
+ +--------------------+
+ | information_schema |
+ | mysql |
+ | performance_schema |
+ | ps |
+ | sys |
+ | test |
+ +--------------------+
+ 6 rows in set (0.00 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 |
+ ...
+
+ 1938
+ mysql.sys@localhost
+ procedure
+ modifies-sql-data
+ 0
+
+
+
+ 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. This requires the SUPER privilege.
+ * full - enables all settings. This will have a big impact on the
+ performance - be careful using this option. This requires
+ the SUPER privilege.
+ 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;
+
+ 38730
+ mysql.sys@localhost
+ procedure
+ reads-sql-data
+ 0
+
+
+
+ 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 UTF8MB4):
+ The query to execute.
+
+
+ Configuration Options
+
+ sys.debug
+ Whether to provide debugging output.
+ Default is 'OFF'. Set to 'ON' to include.
+
+
+ Example
+
+ mysql> CALL sys.execute_prepared_stmt('SELECT * FROM sys.sys_config');
+ +------------------------+-------+---------------------+--------+
+ | variable | value | set_time | set_by |
+ +------------------------+-------+---------------------+--------+
+ | statement_truncate_len | 64 | 2015-06-30 13:06:00 | NULL |
+ +------------------------+-------+---------------------+--------+
+ 1 row in set (0.00 sec)
+
+ Query OK, 0 rows affected (0.00 sec)
+
+ 592
+ mysql.sys@localhost
+ procedure
+ reads-sql-data
+ 0
+
+
+
+ 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)
+
+ 103
+ mysql.sys@localhost
+ function
+ no-sql
+ 1
+ 0
+
+
+
+ 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)
+
+ 126
+ mysql.sys@localhost
+ function
+ no-sql
+ 1
+ 0
+
+
+
+ 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)
+
+ 524
+ mysql.sys@localhost
+ function
+ no-sql
+ 1
+ 0
+
+
+
+ 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 UTF8MB4
+
+ 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)
+
+ 2748
+ mysql.sys@localhost
+ function
+ no-sql
+ 1
+ 0
+
+
+
+ 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)
+
+ 404
+ mysql.sys@localhost
+ function
+ no-sql
+ 1
+ 0
+
+
+
+ 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 CHARSET UTF8MB4
+
+ 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)
+
+ 899
+ mysql.sys@localhost
+ function
+ no-sql
+ 1
+ 0
+
+
+
+ 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)
+
+
+ 344
+ mysql.sys@localhost
+ function
+ 1
+ 0
+
+
+
+ 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> 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)
+
+ 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)
+
+
+ 405
+ mysql.sys@localhost
+ function
+ 1
+ 0
+
+
+
+ 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(32):
+ 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)
+
+ 197
+ mysql.sys@localhost
+ function
+ reads-sql-data
+ 1
+ 0
+
+
+
+ Description
+
+ Determines whether a consumer is enabled (taking the consumer hierarchy into consideration)
+ within the Performance Schema.
+
+ An exception with errno 3047 is thrown if an unknown consumer name is passed to the function.
+ A consumer name of NULL returns NULL.
+
+ 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)
+
+ 1329
+ mysql.sys@localhost
+ function
+ reads-sql-data
+ 1
+ 0
+
+
+
+ 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)
+
+ 416
+ mysql.sys@localhost
+ function
+ reads-sql-data
+ 1
+ 0
+
+
+
+ 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)
+
+ 358
+ mysql.sys@localhost
+ function
+ reads-sql-data
+ 1
+ 0
+
+
+
+ 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 |
+ +------------------------------------------------+
+
+ 302
+ mysql.sys@localhost
+ function
+ reads-sql-data
+ 0
+
+
+
+ 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)
+
+ 203
+ mysql.sys@localhost
+ procedure
+ modifies-sql-data
+ 0
+
+
+
+ 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)
+
+ 214
+ mysql.sys@localhost
+ procedure
+ modifies-sql-data
+ 0
+
+
+
+ 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)
+
+ 234
+ mysql.sys@localhost
+ procedure
+ modifies-sql-data
+ 0
+
+
+
+ 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)
+
+ 206
+ mysql.sys@localhost
+ procedure
+ modifies-sql-data
+ 0
+
+
+
+ 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)
+
+ 203
+ mysql.sys@localhost
+ procedure
+ modifies-sql-data
+ 0
+
+
+
+ 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)
+
+ 214
+ mysql.sys@localhost
+ procedure
+ modifies-sql-data
+ 0
+
+
+
+ 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)
+
+ 235
+ mysql.sys@localhost
+ procedure
+ modifies-sql-data
+ 0
+
+
+
+ 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)
+
+ 206
+ mysql.sys@localhost
+ procedure
+ modifies-sql-data
+ 0
+
+
+
+ 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)
+
+ 2467
+ mysql.sys@localhost
+ procedure
+ modifies-sql-data
+ 0
+
+
+
+ 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)
+
+ 4028
+ mysql.sys@localhost
+ procedure
+ modifies-sql-data
+ 0
+
+
+
+ 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)
+
+ 1273
+ mysql.sys@localhost
+ procedure
+ modifies-sql-data
+ 0
+
+
+
+ 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)
+
+ +----------------------------------+
+ | disabled_consumers |
+ +----------------------------------+
+ | events_stages_current |
+ | events_stages_history |
+ | events_stages_history_long |
+ | events_statements_history |
+ | events_statements_history_long |
+ | events_transactions_history |
+ | events_transactions_history_long |
+ | events_waits_current |
+ | events_waits_history |
+ | events_waits_history_long |
+ +----------------------------------+
+ 10 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)
+
+ 986
+ mysql.sys@localhost
+ procedure
+ reads-sql-data
+ 0
+
+
+
+ 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)
+
+ 133
+ mysql.sys@localhost
+ procedure
+ reads-sql-data
+ 1
+ 0
+
+
+
+ Description
+
+ Shows all currently disabled instruments.
+
+ Parameters
+
+ None
+
+ Example
+
+ mysql> CALL sys.ps_setup_show_disabled_instruments();
+
+ 146
+ mysql.sys@localhost
+ procedure
+ reads-sql-data
+ 1
+ 0
+
+
+
+ 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_consumers |
+ +---------------------------+
+ | events_statements_current |
+ | global_instrumentation |
+ | thread_instrumentation |
+ | statements_digest |
+ +---------------------------+
+ 4 rows in set (0.05 sec)
+
+ +---------------------------------+-------------+
+ | enabled_threads | thread_type |
+ +---------------------------------+-------------+
+ | sql/main | BACKGROUND |
+ | sql/thread_timer_notifier | BACKGROUND |
+ | innodb/io_ibuf_thread | BACKGROUND |
+ | innodb/io_log_thread | BACKGROUND |
+ | innodb/io_read_thread | BACKGROUND |
+ | innodb/io_read_thread | BACKGROUND |
+ | innodb/io_write_thread | BACKGROUND |
+ | innodb/io_write_thread | BACKGROUND |
+ | innodb/page_cleaner_thread | BACKGROUND |
+ | innodb/srv_lock_timeout_thread | BACKGROUND |
+ | innodb/srv_error_monitor_thread | BACKGROUND |
+ | innodb/srv_monitor_thread | BACKGROUND |
+ | innodb/srv_master_thread | BACKGROUND |
+ | innodb/srv_purge_thread | BACKGROUND |
+ | innodb/srv_worker_thread | BACKGROUND |
+ | innodb/srv_worker_thread | BACKGROUND |
+ | innodb/srv_worker_thread | BACKGROUND |
+ | innodb/buf_dump_thread | BACKGROUND |
+ | innodb/dict_stats_thread | BACKGROUND |
+ | sql/signal_handler | BACKGROUND |
+ | sql/compress_gtid_table | FOREGROUND |
+ | root@localhost | FOREGROUND |
+ +---------------------------------+-------------+
+ 22 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)
+
+ 983
+ mysql.sys@localhost
+ procedure
+ reads-sql-data
+ 1
+ 0
+
+
+
+ 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)
+
+ 132
+ mysql.sys@localhost
+ procedure
+ reads-sql-data
+ 1
+ 0
+
+
+
+ Description
+
+ Shows all currently enabled instruments.
+
+ Parameters
+
+ None
+
+ Example
+
+ mysql> CALL sys.ps_setup_show_enabled_instruments();
+
+ 145
+ mysql.sys@localhost
+ procedure
+ reads-sql-data
+ 1
+ 0
+
+
+
+ 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;
+
+ 11603
+ mysql.sys@localhost
+ procedure
+ reads-sql-data
+ 0
+
+
+
+ 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 thread_id, processlist_user, processlist_host from performance_schema.threads where type = 'foreground';
+ +-----------+------------------+------------------+
+ | thread_id | processlist_user | processlist_host |
+ +-----------+------------------+------------------+
+ | 23 | NULL | NULL |
+ | 30 | root | localhost |
+ | 31 | msandbox | localhost |
+ | 32 | msandbox | localhost |
+ +-----------+------------------+------------------+
+ 4 rows in set (0.00 sec)
+
+ mysql> select sys.ps_thread_account(31);
+ +---------------------------+
+ | sys.ps_thread_account(31) |
+ +---------------------------+
+ | msandbox@localhost |
+ +---------------------------+
+ 1 row in set (0.00 sec)
+
+ 185
+ mysql.sys@localhost
+ function
+ reads-sql-data
+ 0
+
+
+
+ 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)
+
+ 138
+ mysql.sys@localhost
+ function
+ reads-sql-data
+ 0
+
+
+
+ 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:
+ ...
+
+ 4021
+ mysql.sys@localhost
+ function
+ reads-sql-data
+ 0
+
+
+
+ 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)
+
+ 3336
+ mysql.sys@localhost
+ function
+ reads-sql-data
+ 0
+
+
+
+ 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 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(64)):
+ 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)
+
+ +----+-------------+--------------+-------+---------------+-----------+---------+-------------+------+-------+
+ | id | select_type | table | type | possible_keys | key | key_len | ref | rows | Extra |
+ +----+-------------+--------------+-------+---------------+-----------+---------+-------------+------+-------+
+ | 1 | SIMPLE | hibeventhe0_ | const | fixedTime | fixedTime | 775 | const,const | 1 | NULL |
+ +----+-------------+--------------+-------+---------------+-----------+---------+-------------+------+-------+
+ 1 row in set (9.27 sec)
+
+ Query OK, 0 rows affected (9.28 sec)
+
+ 4332
+ mysql.sys@localhost
+ procedure
+ modifies-sql-data
+ 0
+
+
+
+ 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)
+
+ 7606
+ mysql.sys@localhost
+ procedure
+ modifies-sql-data
+ 0
+
+
+
+ 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)
+
+ 880
+ mysql.sys@localhost
+ procedure
+ modifies-sql-data
+ 1
+ 0
+
+
+
+ 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 CHARSET UTF8MB4
+
+ 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)
+
+ 69
+ mysql.sys@localhost
+ function
+ no-sql
+ 1
+ 0
+
+
+
+ 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 | +-------------------+-------+------------+---------------+-------------+---------------+-------------------+-------------------+----------------------------------+ ...
+ 19260
+ mysql.sys@localhost
+ procedure
+ 0
+
+
+
+ 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
+
+ mysql> SELECT sys.sys_get_config('statement_truncate_len', 128) AS Value;
+ +-------+
+ | Value |
+ +-------+
+ | 64 |
+ +-------+
+ 1 row in set (0.00 sec)
+
+ 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)
+
+ IF (@sys.statement_truncate_len IS NULL) THEN
+ SET @sys.statement_truncate_len = sys.sys_get_config('statement_truncate_len', 64);
+ END IF;
+
+ 221
+ mysql.sys@localhost
+ function
+ reads-sql-data
+ 1
+ 0
+
+
+
+ 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 existance of the table in.
+
+ in_table (VARCHAR(64)):
+ The name of the table to check the existance 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, 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.
+
+ 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)
+
+ +------------+
+ | @exists |
+ +------------+
+ | TEMPORARY |
+ +------------+
+ 1 row in set (0.00 sec)
+
+ mysql> CALL sys.table_exists('db1', 't2', @exists); SELECT @exists;
+ Query OK, 0 rows affected (0.00 sec)
+
+ +------------+
+ | @exists |
+ +------------+
+ | BASE TABLE |
+ +------------+
+ 1 row in set (0.01 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)
+
+ 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)
+
+ 1178
+ mysql.sys@localhost
+ procedure
+ 0
+
+
+
+ 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)
+
+ 77
+ mysql.sys@localhost
+ function
+ no-sql
+ 0
+
+
+
+ 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)
+
+ 103
+ mysql.sys@localhost
+ function
+ no-sql
+ 0
+
+
+
+ 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)
+
+ 78
+ mysql.sys@localhost
+ function
+ no-sql
+ 0
+
+