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# Tests for PERFORMANCE_SCHEMA
--source include/not_embedded.inc
--source include/have_perfschema.inc
--disable_result_log
select * from performance_schema.metadata_locks;
--enable_result_log
select * from performance_schema.metadata_locks
where object_name='foo';
--error ER_TABLEACCESS_DENIED_ERROR
insert into performance_schema.metadata_locks
set object_name='FOO', owner_thread_id=1;
--error ER_TABLEACCESS_DENIED_ERROR
update performance_schema.metadata_locks
set owner_thread_id=12 where object_name='foo';
--error ER_TABLEACCESS_DENIED_ERROR
delete from performance_schema.metadata_locks;
--error ER_TABLEACCESS_DENIED_ERROR
delete from performance_schema.metadata_locks
where timer_name='CYCLE';
-- error ER_TABLEACCESS_DENIED_ERROR
LOCK TABLES performance_schema.metadata_locks READ;
UNLOCK TABLES;
-- error ER_TABLEACCESS_DENIED_ERROR
LOCK TABLES performance_schema.metadata_locks WRITE;
UNLOCK TABLES;
--echo #
--echo # MDEV-25325 column_comment for performance_schema tables
--echo #
select column_name, column_comment
from information_schema.columns
where table_schema='performance_schema' and table_name='metadata_locks';
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