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https://dev.mysql.com/doc/internals/en/class-procedure-add.html
Prototype: virtual void add(void); This member function is called once for every source row for a GROUP BY query.
https://dev.mysql.com/doc/internals/en/class-procedure-end-group.html
Prototype: virtual void end_group(void); This member function is called whenever the end of a group in a GROUP BY is detected, it is called after the call to add() for the last source row in the group but before sending the actual aggregated result ...
https://dev.mysql.com/doc/refman/8.4/en/sys-ps-setup-disable-background-threads.html
Produces a result set indicating how many background threads were disabled. Example mysql> CALL sys.ps_setup_disable_background_threads(); +--------------------------------+ | summary | +--------------------------------+ | Disabled 24 background ...
https://dev.mysql.com/doc/refman/8.4/en/sys-ps-setup-disable-consumer.html
Disables Performance Schema consumers with names that contain the argument. Parameters consumer VARCHAR(128): The value used to match consumer names, which are identified by using %consumer% as an operand for a LIKE pattern match. Example Disable ...
https://dev.mysql.com/doc/refman/8.4/en/sys-ps-setup-disable-instrument.html
Disables Performance Schema instruments with names that contain the argument. Parameters in_pattern VARCHAR(128): The value used to match instrument names, which are identified by using %in_pattern% as an operand for a LIKE pattern match. Example ...
https://dev.mysql.com/doc/refman/8.4/en/sys-ps-setup-disable-thread.html
Given a connection ID, disables Performance Schema instrumentation for the thread. This is a value of the type given in the PROCESSLIST_ID column of the Performance Schema threads table or the Id column of SHOW PROCESSLIST output. Example Disable a ...
https://dev.mysql.com/doc/refman/8.4/en/sys-ps-setup-enable-background-threads.html
Produces a result set indicating how many background threads were enabled. Example mysql> CALL sys.ps_setup_enable_background_threads(); +-------------------------------+ | summary | +-------------------------------+ | Enabled 24 background threads ...
https://dev.mysql.com/doc/refman/8.4/en/sys-ps-setup-enable-consumer.html
Enables Performance Schema consumers with names that contain the argument. Parameters consumer VARCHAR(128): The value used to match consumer names, which are identified by using %consumer% as an operand for a LIKE pattern match. Example Enable all ...
https://dev.mysql.com/doc/refman/8.4/en/sys-ps-setup-enable-instrument.html
Enables Performance Schema instruments with names that contain the argument. Parameters in_pattern VARCHAR(128): The value used to match instrument names, which are identified by using %in_pattern% as an operand for a LIKE pattern match. Example ...
https://dev.mysql.com/doc/refman/8.4/en/sys-ps-setup-enable-thread.html
Given a connection ID, enables Performance Schema instrumentation for the thread. This is a value of the type given in the PROCESSLIST_ID column of the Performance Schema threads table or the Id column of SHOW PROCESSLIST output. Example Enable a ...