1select * from performance_schema.events_statements_summary_by_user_by_event_name 2where event_name like 'statement/%' limit 1; 3select * from performance_schema.events_statements_summary_by_user_by_event_name 4where event_name='FOO'; 5insert into performance_schema.events_statements_summary_by_user_by_event_name 6set event_name='FOO', user='BAR', 7count_star=1, sum_timer_wait=2, min_timer_wait=3, 8avg_timer_wait=4, max_timer_wait=5; 9ERROR 42000: INSERT command denied to user 'root'@'localhost' for table 'events_statements_summary_by_user_by_event_name' 10update performance_schema.events_statements_summary_by_user_by_event_name 11set count_star=12; 12ERROR 42000: UPDATE command denied to user 'root'@'localhost' for table 'events_statements_summary_by_user_by_event_name' 13update performance_schema.events_statements_summary_by_user_by_event_name 14set count_star=12 where event_name like "FOO"; 15ERROR 42000: UPDATE command denied to user 'root'@'localhost' for table 'events_statements_summary_by_user_by_event_name' 16delete from performance_schema.events_statements_summary_by_user_by_event_name 17where count_star=1; 18ERROR 42000: DELETE command denied to user 'root'@'localhost' for table 'events_statements_summary_by_user_by_event_name' 19delete from performance_schema.events_statements_summary_by_user_by_event_name; 20ERROR 42000: DELETE command denied to user 'root'@'localhost' for table 'events_statements_summary_by_user_by_event_name' 21LOCK TABLES performance_schema.events_statements_summary_by_user_by_event_name READ; 22ERROR 42000: SELECT, LOCK TABLES command denied to user 'root'@'localhost' for table 'events_statements_summary_by_user_by_event_name' 23UNLOCK TABLES; 24LOCK TABLES performance_schema.events_statements_summary_by_user_by_event_name WRITE; 25ERROR 42000: SELECT, LOCK TABLES command denied to user 'root'@'localhost' for table 'events_statements_summary_by_user_by_event_name' 26UNLOCK TABLES; 27# 28# MDEV-25325 column_comment for performance_schema tables 29# 30select column_name, column_comment 31from information_schema.columns 32where table_schema='performance_schema' and table_name='events_statements_summary_by_user_by_event_name'; 33column_name column_comment 34USER User. Used together with EVENT_NAME for grouping events. 35EVENT_NAME Event name. Used together with USER for grouping events. 36COUNT_STAR Number of summarized events 37SUM_TIMER_WAIT Total wait time of the summarized events that are timed. 38MIN_TIMER_WAIT Minimum wait time of the summarized events that are timed. 39AVG_TIMER_WAIT Average wait time of the summarized events that are timed. 40MAX_TIMER_WAIT Maximum wait time of the summarized events that are timed. 41SUM_LOCK_TIME Sum of the LOCK_TIME column in the events_statements_current table. 42SUM_ERRORS Sum of the ERRORS column in the events_statements_current table. 43SUM_WARNINGS Sum of the WARNINGS column in the events_statements_current table. 44SUM_ROWS_AFFECTED Sum of the ROWS_AFFECTED column in the events_statements_current table. 45SUM_ROWS_SENT Sum of the ROWS_SENT column in the events_statements_current table. 46SUM_ROWS_EXAMINED Sum of the ROWS_EXAMINED column in the events_statements_current table. 47SUM_CREATED_TMP_DISK_TABLES Sum of the CREATED_TMP_DISK_TABLES column in the events_statements_current table. 48SUM_CREATED_TMP_TABLES Sum of the CREATED_TMP_TABLES column in the events_statements_current table. 49SUM_SELECT_FULL_JOIN Sum of the SELECT_FULL_JOIN column in the events_statements_current table. 50SUM_SELECT_FULL_RANGE_JOIN Sum of the SELECT_FULL_RANGE_JOIN column in the events_statements_current table. 51SUM_SELECT_RANGE Sum of the SELECT_RANGE column in the events_statements_current table. 52SUM_SELECT_RANGE_CHECK Sum of the SELECT_RANGE_CHECK column in the events_statements_current table. 53SUM_SELECT_SCAN Sum of the SELECT_SCAN column in the events_statements_current table. 54SUM_SORT_MERGE_PASSES Sum of the SORT_MERGE_PASSES column in the events_statements_current table. 55SUM_SORT_RANGE Sum of the SORT_RANGE column in the events_statements_current table. 56SUM_SORT_ROWS Sum of the SORT_ROWS column in the events_statements_current table. 57SUM_SORT_SCAN Sum of the SORT_SCAN column in the events_statements_current table. 58SUM_NO_INDEX_USED Sum of the NO_INDEX_USED column in the events_statements_current table. 59SUM_NO_GOOD_INDEX_USED Sum of the NO_GOOD_INDEX_USED column in the events_statements_current table. 60