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Search Results
https://dev.mysql.com/doc/refman/5.7/en/sys-format-time.html
Given a Performance Schema latency or wait time in picoseconds, converts it to human-readable format and returns a string consisting of a value and a units indicator. Depending on the size of the value, the units part is ps (picoseconds), ns ...
https://dev.mysql.com/doc/refman/5.7/en/sys-list-drop.html
Removes a value from a comma-separated list of values and returns the result. For more information, see the description of list_add() Parameters in_list TEXT: The list to be modified.
https://dev.mysql.com/doc/refman/5.7/en/sys-ps-is-account-enabled.html
Returns YES or NO to indicate whether Performance Schema instrumentation for a given account is enabled. Parameters in_host VARCHAR(60): The host name of the account to check. Example mysql> SELECT sys.ps_is_account_enabled('localhost', 'root'); ...
https://dev.mysql.com/doc/refman/5.7/en/sys-ps-is-instrument-default-enabled.html
Returns YES or NO to indicate whether a given Performance Schema instrument is enabled by default. Example mysql> SELECT sys.ps_is_instrument_default_enabled('memory/innodb/row_log_buf'); ...
https://dev.mysql.com/doc/refman/5.7/en/sys-ps-is-instrument-default-timed.html
Returns YES or NO to indicate whether a given Performance Schema instrument is timed by default. Example mysql> SELECT sys.ps_is_instrument_default_timed('memory/innodb/row_log_buf'); ...
https://dev.mysql.com/doc/refman/5.7/en/sys-ps-is-thread-instrumented.html
Returns YES or NO to indicate whether Performance Schema instrumentation for a given connection ID is enabled, UNKNOWN if the ID is unknown, or NULL if the ID is NULL. This is a value of the type given in the PROCESSLIST_ID column of the ...
https://dev.mysql.com/doc/refman/5.7/en/sys-ps-thread-account.html
Given a Performance Schema thread ID, returns the user_name@host_name account associated with the thread. Parameters in_thread_id BIGINT UNSIGNED: The thread ID for which to return the account. The value should match the THREAD_ID column from some ...
https://dev.mysql.com/doc/refman/5.7/en/sys-ps-thread-id.html
Returns the Performance Schema thread ID assigned to a given connection ID, or the thread ID for the current connection if the connection ID is NULL. Parameters in_connection_id BIGINT UNSIGNED: The ID of the connection for which to return the ...
https://dev.mysql.com/doc/refman/5.7/en/sys-ps-thread-stack.html
Returns a JSON formatted stack of all statements, stages, and events within the Performance Schema for a given thread ID. The value should match the THREAD_ID column from some Performance Schema threads table row. row *************************** ...
https://dev.mysql.com/doc/refman/5.7/en/sys-sys-get-config.html
Given a configuration option name, returns the option value from the sys_config table, or the provided default value (which may be NULL) if the option does not exist in the table. If sys_get_config() returns the default value and that value is ...