26.4.5.10 The ps_is_consumer_enabled() Function
Returns YES
or NO
to indicate whether a given Performance Schema consumer is enabled, or NULL
if the argument is NULL
. If the argument is not a valid consumer name, an error occurs. (Prior to MySQL 5.7.28, the function returns NULL
if the argument is not a valid consumer name.)
This function accounts for the consumer hierarchy, so a consumer is not considered enabled unless all consumers on which depends are also enabled. For information about the consumer hierarchy, see Section 25.4.7, “Pre-Filtering by Consumer”.
mysql> SELECT sys.ps_is_consumer_enabled('thread_instrumentation');
+------------------------------------------------------+
| sys.ps_is_consumer_enabled('thread_instrumentation') |
+------------------------------------------------------+
| YES |
+------------------------------------------------------+