Jstr

mysql> explain category;+-------+-------------+------+-----+---------+----------------+| Field | Type        | Null | Key | Default | Extra          |+-------+-------------+------+-----+---------+----------------+| catid | int(11)     | NO   | PRI | NULL    | auto_increment || name  | varchar(30) | YES  | MUL | NULL    |                |+-------+-------------+------+-----+---------+----------------+