SELECT EVENT_ID FROM performance_schema.EVENTS_WAITS_CURRENT
WHERE THREAD_ID IN
(SELECT THREAD_ID FROM performance_schema.PROCESSLIST)
AND EVENT_NAME IN
(SELECT NAME FROM performance_schema.SETUP_INSTRUMENTS
WHERE NAME LIKE "wait/synch/%")
LIMIT 1;
create table test.t1(a int) engine=performance_schema;
ERROR HY000: Invalid performance_schema usage.
create table test.t1 like performance_schema.EVENTS_WAITS_CURRENT;
ERROR HY000: Invalid performance_schema usage.
create table performance_schema.t1(a int);
ERROR 42000: CREATE command denied to user 'root'@'localhost' for table 't1'
drop table if exists test.ghost;
create table test.ghost (a int, b int);
alter table test.ghost add index index_a(a);
alter table test.ghost add index index_b(b);
insert into test.ghost values (1, 3);
insert into test.ghost values (2, 4);
select * from test.ghost;
a	b
1	3
2	4
drop table test.ghost;
select * from performance_schema.FILE_INSTANCES
where file_name like "%ghost%";
FILE_NAME	EVENT_NAME	OPEN_COUNT