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https://dev.mysql.com/doc/refman/5.7/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/5.7/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/5.7/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/5.7/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/5.7/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 ...
https://dev.mysql.com/doc/refman/5.7/en/sys-ps-setup-reload-saved.html
Reloads a Performance Schema configuration saved earlier within the same session using ps_setup_save(). That is a restricted operation, so the procedure requires privileges sufficient to set restricted session variables. This procedure disables ...
https://dev.mysql.com/doc/refman/5.7/en/sys-ps-setup-save.html
This enables you to alter the configuration temporarily for debugging or other purposes, then restore it to the previous state by invoking the ps_setup_reload_saved() procedure. To prevent other simultaneous calls to save the configuration, ...This ...
https://dev.mysql.com/doc/refman/5.7/en/sys-ps-thread-stack.html
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", ... Returns ...
https://dev.mysql.com/doc/refman/5.7/en/while.html
For the rules regarding label use, see Section 13.6.2, “Statement Labels”. [begin_label:] WHILE search_condition DO statement_list END WHILE [end_label] The statement list within a WHILE statement is repeated as long as the search_condition ...
https://dev.mysql.com/doc/refman/5.7/en/create-function-loadable.html
CREATE FUNCTION requires the INSERT privilege for the mysql system database because it adds a row to the mysql.func system table to register the function. For more information, see Section 5.6.1, “Installing and Uninstalling Loadable Functions”.