1alter table performance_schema.events_waits_history add column foo integer; 2ERROR 42000: Access denied for user 'root'@'localhost' to database 'performance_schema' 3truncate table performance_schema.events_waits_history; 4ALTER TABLE performance_schema.events_waits_history ADD INDEX test_index(EVENT_ID); 5ERROR 42000: Access denied for user 'root'@'localhost' to database 'performance_schema' 6CREATE UNIQUE INDEX test_index ON performance_schema.events_waits_history(EVENT_ID); 7ERROR 42000: Access denied for user 'root'@'localhost' to database 'performance_schema' 8