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select * from performance_schema.table_handles;
select * from performance_schema.table_handles
where object_name='foo';
OBJECT_TYPE OBJECT_SCHEMA OBJECT_NAME OBJECT_INSTANCE_BEGIN OWNER_THREAD_ID OWNER_EVENT_ID INTERNAL_LOCK EXTERNAL_LOCK
insert into performance_schema.table_handles
set object_name='FOO', owner_event_id=1;
ERROR 42000: INSERT command denied to user 'root'@'localhost' for table `performance_schema`.`table_handles`
update performance_schema.table_handles
set owner_event_id=12 where object_name='foo';
ERROR 42000: UPDATE command denied to user 'root'@'localhost' for table `performance_schema`.`table_handles`
delete from performance_schema.table_handles;
ERROR 42000: DELETE command denied to user 'root'@'localhost' for table `performance_schema`.`table_handles`
delete from performance_schema.table_handles
where timer_name='CYCLE';
ERROR 42000: DELETE command denied to user 'root'@'localhost' for table `performance_schema`.`table_handles`
LOCK TABLES performance_schema.table_handles READ;
ERROR 42000: SELECT, LOCK TABLES command denied to user 'root'@'localhost' for table `performance_schema`.`table_handles`
UNLOCK TABLES;
LOCK TABLES performance_schema.table_handles WRITE;
ERROR 42000: SELECT, LOCK TABLES command denied to user 'root'@'localhost' for table `performance_schema`.`table_handles`
UNLOCK TABLES;
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