Delete Subquery
| From: | Brock Jimmy D Contr 74 MDSS/SGSI | Date: | Mon, 14 Jun 2004 15:59:25 +0000 |
| Subject: | Delete Subquery | ||
| Groups: | php.db | ||
| Request: | Send a blank email to php-db+get-34781@lists.php.net to get a copy of this message | ||
I've been able to figure how to use a delete subquery to delete all rows, but how do I use a
delete subquery to delete only one row?
I have two tables: users and roles with the following fields:
Users:
userid
roleid
Roles:
roleid
I want to be able to delete a rowid from the roles table, but only if the roleid does not exist in
the users table.
thanks