MYSQL-delete update insert

1.

INSERT INTO rental VALUES (33220,'2005-8-24 23:56:33',140,130,'2005-8-31 10:21:58',2,'2006-3-13 21:30:53');

2.

UPDATE rental SET customer_id =120 WHERE rental_id =33220;

3.DELETE 子句

DELETE FROM rental WHERE rental_id=33220;