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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.threads
where name like 'Thread/%' limit 1;
select * from performance_schema.threads
where name='FOO';
--enable_result_log
--error ER_TABLEACCESS_DENIED_ERROR
insert into performance_schema.threads
set name='FOO', thread_id=1, processlist_id=2;
--error ER_WRONG_PERFSCHEMA_USAGE
update performance_schema.threads
set thread_id=12;
--error ER_WRONG_PERFSCHEMA_USAGE
update performance_schema.threads
set thread_id=12 where PROCESSLIST_ID=connection_id();
update performance_schema.threads
set instrumented= 'NO' where PROCESSLIST_ID=connection_id();
select instrumented from performance_schema.threads
where PROCESSLIST_ID=connection_id();
update performance_schema.threads
set instrumented= 'YES' where PROCESSLIST_ID=connection_id();
select instrumented from performance_schema.threads
where PROCESSLIST_ID=connection_id();
--error ER_TABLEACCESS_DENIED_ERROR
delete from performance_schema.threads
where id=1;
--error ER_TABLEACCESS_DENIED_ERROR
delete from performance_schema.threads;
LOCK TABLES performance_schema.threads READ;
UNLOCK TABLES;
LOCK TABLES performance_schema.threads 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='threads';
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