28.4.5.13 The ps_is_thread_instrumented() Function

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.

Parameters

  • in_connection_id BIGINT UNSIGNED: The connection ID. 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.

Return Value

An ENUM('YES','NO','UNKNOWN') value.

Example
mysql> SELECT sys.ps_is_thread_instrumented(43);
+-----------------------------------+
| sys.ps_is_thread_instrumented(43) |
+-----------------------------------+
| UNKNOWN                           |
+-----------------------------------+
mysql> SELECT sys.ps_is_thread_instrumented(CONNECTION_ID());
+------------------------------------------------+
| sys.ps_is_thread_instrumented(CONNECTION_ID()) |
+------------------------------------------------+
| YES                                            |
+------------------------------------------------+