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select * from performance_schema.events_waits_summary_by_instance
where event_name like 'Wait/Synch/%' limit 1;
select * from performance_schema.events_waits_summary_by_instance
where event_name='FOO';
select * from performance_schema.events_waits_summary_by_instance
order by count_star limit 1;
select * from performance_schema.events_waits_summary_by_instance
order by count_star desc limit 1;
select * from performance_schema.events_waits_summary_by_instance
where min_timer_wait > 0 order by count_star limit 1;
select * from performance_schema.events_waits_summary_by_instance
where min_timer_wait > 0 order by count_star desc limit 1;
insert into performance_schema.events_waits_summary_by_instance
set event_name='FOO', object_instance_begin=0,
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_waits_summary_by_instance'
update performance_schema.events_waits_summary_by_instance
set count_star=12;
ERROR 42000: UPDATE command denied to user 'root'@'localhost' for table 'events_waits_summary_by_instance'
update performance_schema.events_waits_summary_by_instance
set count_star=12 where event_name like "FOO";
ERROR 42000: UPDATE command denied to user 'root'@'localhost' for table 'events_waits_summary_by_instance'
delete from performance_schema.events_waits_summary_by_instance
where count_star=1;
ERROR 42000: DELETE command denied to user 'root'@'localhost' for table 'events_waits_summary_by_instance'
delete from performance_schema.events_waits_summary_by_instance;
ERROR 42000: DELETE command denied to user 'root'@'localhost' for table 'events_waits_summary_by_instance'
LOCK TABLES performance_schema.events_waits_summary_by_instance READ;
ERROR 42000: SELECT,LOCK TABL command denied to user 'root'@'localhost' for table 'events_waits_summary_by_instance'
UNLOCK TABLES;
LOCK TABLES performance_schema.events_waits_summary_by_instance WRITE;
ERROR 42000: SELECT,LOCK TABL command denied to user 'root'@'localhost' for table 'events_waits_summary_by_instance'
UNLOCK TABLES;
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