select * from performance_schema.file_instances limit 1;
select * from performance_schema.file_instances
where file_name='FOO';
insert into performance_schema.file_instances
set file_name='FOO', event_name='BAR', open_count=12;
ERROR 42000: INSERT command denied to user 'root'@'localhost' for table 'file_instances'
update performance_schema.file_instances
set file_name='FOO';
ERROR 42000: UPDATE command denied to user 'root'@'localhost' for table 'file_instances'
delete from performance_schema.file_instances
where event_name like "wait/%";
ERROR 42000: DELETE command denied to user 'root'@'localhost' for table 'file_instances'
delete from performance_schema.file_instances;
ERROR 42000: DELETE command denied to user 'root'@'localhost' for table 'file_instances'
LOCK TABLES performance_schema.file_instances READ;
ERROR 42000: SELECT, LOCK TABLES command denied to user 'root'@'localhost' for table 'file_instances'
UNLOCK TABLES;
LOCK TABLES performance_schema.file_instances WRITE;
ERROR 42000: SELECT, LOCK TABLES command denied to user 'root'@'localhost' for table 'file_instances'
UNLOCK TABLES;