query: insert | update | delete | xid_event ; xid_event: START TRANSACTION | COMMIT | ROLLBACK | SAVEPOINT A | ROLLBACK TO SAVEPOINT A | RELEASE SAVEPOINT A | SET AUTOCOMMIT = ON | SET AUTOCOMMIT = OFF ; insert: INSERT INTO _table ( _field ) VALUES ( value ) ; update: UPDATE _table SET _field = value where; delete: DELETE FROM _table where LIMIT 1 ; where: WHERE _field > value | WHERE _field < value | WHERE _field = value ; value: _digit | _letter | _english | NULL ; _field: _field_no_pk ;