select * from performance_schema.data_lock_waits;
select * from performance_schema.data_lock_waits
where blocking_thread_id='foo';
ENGINE	REQUESTING_ENGINE_LOCK_ID	REQUESTING_ENGINE_TRANSACTION_ID	REQUESTING_THREAD_ID	REQUESTING_EVENT_ID	REQUESTING_OBJECT_INSTANCE_BEGIN	BLOCKING_ENGINE_LOCK_ID	BLOCKING_ENGINE_TRANSACTION_ID	BLOCKING_THREAD_ID	BLOCKING_EVENT_ID	BLOCKING_OBJECT_INSTANCE_BEGIN
Warnings:
Warning	1292	Truncated incorrect DOUBLE value: 'foo'
insert into performance_schema.data_lock_waits
set blocking_engine='FOO', blocking_thread_id=1;
ERROR 42000: INSERT command denied to user 'root'@'localhost' for table 'data_lock_waits'
update performance_schema.data_lock_waits
set blocking_thread_id=12 where blocking_engine='foo';
ERROR 42000: UPDATE command denied to user 'root'@'localhost' for table 'data_lock_waits'
delete from performance_schema.data_lock_waits;
ERROR 42000: DELETE command denied to user 'root'@'localhost' for table 'data_lock_waits'
delete from performance_schema.data_lock_waits
where blocking_engine='CYCLE';
ERROR 42000: DELETE command denied to user 'root'@'localhost' for table 'data_lock_waits'
LOCK TABLES performance_schema.data_lock_waits READ;
ERROR 42000: SELECT, LOCK TABLES command denied to user 'root'@'localhost' for table 'data_lock_waits'
UNLOCK TABLES;
LOCK TABLES performance_schema.data_lock_waits WRITE;
ERROR 42000: SELECT, LOCK TABLES command denied to user 'root'@'localhost' for table 'data_lock_waits'
UNLOCK TABLES;