On Wed, Oct 8, 2008 at 11:56 AM, Jim Lyons <[EMAIL PROTECTED]> wrote: > Indexes speed up joins. Foreign keys should be indexes themselves, so they > can also speed up joins. If the FK is not an index, it won't help. So, > index your FKs
If you add a FOREIGN KEY constraint in MySQL 5+ it adds an index automatically. - Perrin -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
