MySQL 9.3 Reference Manual Including MySQL NDB Cluster 9.3
Given a connection ID, enables Performance Schema instrumentation for the thread. Produces a result set indicating how many threads were enabled. Already enabled threads do not count.
in_connection_id BIGINT: 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.
Enable a specific connection by its connection ID:
mysql> CALL sys.ps_setup_enable_thread(225);
+------------------+
| summary |
+------------------+
| Enabled 1 thread |
+------------------+
Enable the current connection:
mysql> CALL sys.ps_setup_enable_thread(CONNECTION_ID());
+------------------+
| summary |
+------------------+
| Enabled 1 thread |
+------------------+