config root man

# Tests for PERFORMANCE_SCHEMA

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

--disable_result_log 
select * from performance_schema.user_variables_by_thread
  where variable_name like 'foo%' limit 1;

select * from performance_schema.user_variables_by_thread
  where variable_name='FOO';
--enable_result_log

--error ER_TABLEACCESS_DENIED_ERROR
insert into performance_schema.user_variables_by_thread
  set thread_id=12, variable_name='foo', variable_value='bar';

--error ER_TABLEACCESS_DENIED_ERROR
update performance_schema.user_variables_by_thread
  set thread_id=12;

--error ER_TABLEACCESS_DENIED_ERROR
update performance_schema.user_variables_by_thread
  set thread_id=12 where variable_name like "FOO";

--error ER_TABLEACCESS_DENIED_ERROR
delete from performance_schema.user_variables_by_thread
  where thread_id=1;

--error ER_TABLEACCESS_DENIED_ERROR
delete from performance_schema.user_variables_by_thread;

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

-- error ER_TABLEACCESS_DENIED_ERROR
LOCK TABLES performance_schema.user_variables_by_thread WRITE;
UNLOCK TABLES;

DELIMITER |;
-- error ER_DBACCESS_DENIED_ERROR
CREATE TRIGGER test_uvar_trigger
    AFTER INSERT ON performance_schema.user_variables_by_thread
     FOR EACH ROW BEGIN
     set @a='OK';
END|
DELIMITER ;|