Quelle  dml_tlws_by_table.test  Sprache: unbekannt

# Tests for PERFORMANCE_SCHEMA

--source include/not_embedded.inc
--source include/have_perfschema.inc

--disable_result_log
select * from performance_schema.table_lock_waits_summary_by_table
  limit 1;

select * from performance_schema.table_lock_waits_summary_by_table
  where object_name='FOO';
--enable_result_log

--error ER_TABLEACCESS_DENIED_ERROR
insert into performance_schema.table_lock_waits_summary_by_table
  set object_type='TABLE', object_name='FOO', object_schema='BAR',
  count_star=1, sum_timer_wait=2, min_timer_wait=3,
  avg_timer_wait=4, max_timer_wait=5;

--error ER_TABLEACCESS_DENIED_ERROR
update performance_schema.table_lock_waits_summary_by_table
  set count_star=12;

--error ER_TABLEACCESS_DENIED_ERROR
update performance_schema.table_lock_waits_summary_by_table
  set count_star=12 where object_name like "FOO";

--error ER_TABLEACCESS_DENIED_ERROR
delete from performance_schema.table_lock_waits_summary_by_table
  where count_star=1;

--error ER_TABLEACCESS_DENIED_ERROR
delete from performance_schema.table_lock_waits_summary_by_table;

-- error ER_TABLEACCESS_DENIED_ERROR
LOCK TABLES performance_schema.table_lock_waits_summary_by_table READ;
UNLOCK TABLES;

-- error ER_TABLEACCESS_DENIED_ERROR
LOCK TABLES performance_schema.table_lock_waits_summary_by_table 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='table_lock_waits_summary_by_table';