alter table performance_schema.events_statements_summary_by_digest
add column foo integer;
ERROR 42000: Access denied for user 'root'@'localhost' to database 'performance_schema'
truncate table performance_schema.events_statements_summary_by_digest;
ALTER TABLE performance_schema.events_statements_summary_by_digest ADD INDEX test_index(DIGEST);
ERROR 42000: Access denied for user 'root'@'localhost' to database 'performance_schema'
CREATE UNIQUE INDEX test_index
ON performance_schema.events_statements_summary_by_digest(DIGEST);
ERROR 42000: Access denied for user 'root'@'localhost' to database 'performance_schema'