alter table performance_schema.setup_objects add column foo integer;
ERROR 42000: Access denied for user 'root'@'localhost' to database 'performance_schema'
drop table if exists test.setup_objects;
create table test.setup_objects as
select * from performance_schema.setup_objects;
truncate table performance_schema.setup_objects;
select count(*) from performance_schema.setup_objects;
count(*)
0
insert into performance_schema.setup_objects
select * from test.setup_objects;
drop table test.setup_objects;
ALTER TABLE performance_schema.setup_objects ADD INDEX test_index(OBJECT_NAME);
ERROR 42000: Access denied for user 'root'@'localhost' to database 'performance_schema'
CREATE UNIQUE INDEX test_index ON performance_schema.setup_objects(OBJECT_NAME);
ERROR 42000: Access denied for user 'root'@'localhost' to database 'performance_schema'