1alter table performance_schema.events_statements_summary_by_thread_by_event_name 2add column foo integer; 3ERROR 42000: Access denied for user 'root'@'localhost' to database 'performance_schema' 4truncate table performance_schema.events_statements_summary_by_thread_by_event_name; 5ALTER TABLE performance_schema.events_statements_summary_by_thread_by_event_name ADD INDEX test_index(THREAD_ID); 6ERROR 42000: Access denied for user 'root'@'localhost' to database 'performance_schema' 7CREATE UNIQUE INDEX test_index 8ON performance_schema.events_statements_summary_by_thread_by_event_name(THREAD_ID); 9ERROR 42000: Access denied for user 'root'@'localhost' to database 'performance_schema' 10