select * from performance_schema.events_statements_summary_by_account_by_event_name
where event_name like 'statement/%' limit 1;
select * from performance_schema.events_statements_summary_by_account_by_event_name
where event_name='FOO';
insert into performance_schema.events_statements_summary_by_account_by_event_name
set event_name='FOO', user='BAR', host='BAZ',
count_star=1, sum_timer_wait=2, min_timer_wait=3,
avg_timer_wait=4, max_timer_wait=5;
ERROR 42000: INSERT command denied to user 'root'@'localhost' for table 'events_statements_summary_by_account_by_event_name'
update performance_schema.events_statements_summary_by_account_by_event_name
set count_star=12;
ERROR 42000: UPDATE command denied to user 'root'@'localhost' for table 'events_statements_summary_by_account_by_event_name'
update performance_schema.events_statements_summary_by_account_by_event_name
set count_star=12 where event_name like "FOO";
ERROR 42000: UPDATE command denied to user 'root'@'localhost' for table 'events_statements_summary_by_account_by_event_name'
delete from performance_schema.events_statements_summary_by_account_by_event_name
where count_star=1;
ERROR 42000: DELETE command denied to user 'root'@'localhost' for table 'events_statements_summary_by_account_by_event_name'
delete from performance_schema.events_statements_summary_by_account_by_event_name;
ERROR 42000: DELETE command denied to user 'root'@'localhost' for table 'events_statements_summary_by_account_by_event_name'
LOCK TABLES performance_schema.events_statements_summary_by_account_by_event_name READ;
ERROR 42000: SELECT, LOCK TABLES command denied to user 'root'@'localhost' for table 'events_statements_summary_by_account_by_event_name'
UNLOCK TABLES;
LOCK TABLES performance_schema.events_statements_summary_by_account_by_event_name WRITE;
ERROR 42000: SELECT, LOCK TABLES command denied to user 'root'@'localhost' for table 'events_statements_summary_by_account_by_event_name'
UNLOCK TABLES;
#
# MDEV-25325 column_comment for performance_schema tables
#
select column_name, column_comment 
from information_schema.columns 
where table_schema='performance_schema' and table_name='events_statements_summary_by_account_by_event_name';
column_name	column_comment
USER	User. Used together with HOST and EVENT_NAME for grouping events.
HOST	Host. Used together with USER and EVENT_NAME for grouping events.
EVENT_NAME	Event name. Used together with USER and HOST for grouping events.
COUNT_STAR	Number of summarized events
SUM_TIMER_WAIT	Total wait time of the summarized events that are timed.
MIN_TIMER_WAIT	Minimum wait time of the summarized events that are timed.
AVG_TIMER_WAIT	Average wait time of the summarized events that are timed.
MAX_TIMER_WAIT	Maximum wait time of the summarized events that are timed.
SUM_LOCK_TIME	Sum of the LOCK_TIME column in the events_statements_current table.
SUM_ERRORS	Sum of the ERRORS column in the events_statements_current table.
SUM_WARNINGS	Sum of the WARNINGS column in the events_statements_current table.
SUM_ROWS_AFFECTED	Sum of the ROWS_AFFECTED column in the events_statements_current table.
SUM_ROWS_SENT	Sum of the ROWS_SENT column in the events_statements_current table.
SUM_ROWS_EXAMINED	Sum of the ROWS_EXAMINED column in the events_statements_current table.
SUM_CREATED_TMP_DISK_TABLES	Sum of the CREATED_TMP_DISK_TABLES column in the events_statements_current table.
SUM_CREATED_TMP_TABLES	Sum of the CREATED_TMP_TABLES column in the events_statements_current table.
SUM_SELECT_FULL_JOIN	Sum of the SELECT_FULL_JOIN column in the events_statements_current table.
SUM_SELECT_FULL_RANGE_JOIN	Sum of the SELECT_FULL_RANGE_JOIN column in the events_statements_current table.
SUM_SELECT_RANGE	Sum of the SELECT_RANGE column in the events_statements_current table.
SUM_SELECT_RANGE_CHECK	Sum of the SELECT_RANGE_CHECK column in the events_statements_current table.
SUM_SELECT_SCAN	Sum of the SELECT_SCAN column in the events_statements_current table.
SUM_SORT_MERGE_PASSES	Sum of the SORT_MERGE_PASSES column in the events_statements_current table.
SUM_SORT_RANGE	Sum of the SORT_RANGE column in the events_statements_current table.
SUM_SORT_ROWS	Sum of the SORT_ROWS column in the events_statements_current table.
SUM_SORT_SCAN	Sum of the SORT_SCAN column in the events_statements_current table.
SUM_NO_INDEX_USED	Sum of the NO_INDEX_USED column in the events_statements_current table.
SUM_NO_GOOD_INDEX_USED	Sum of the NO_GOOD_INDEX_USED column in the events_statements_current table.