Hi Matt, For the query style you would replace "ON" with "WHERE". You won't use "ON" unless you use "JOIN"; they come together. SELECT u.*, a.city FROM users u, addresses a WHERE u.id=a.user_id Marc F. ""Matt Monaco"" <mmonaco3@xxxxxxx> wrote in message news:99.57.21657.2CE8B834@xxxxxxxxxxxxxxx > When using JOINS by the simply supplying a comma separated list of tables > in the FROM clause, is the ON argument normally associated with a join > intended to be addressed in the WHERE clause, or should ON still be used? > > // Comma separated join > SELECT u.*, a.city FROM users u, addresses a WHERE u.id=a.user_id; > > // Actual JOIN clause > SELECT u.*, a.city FROM users u INNER JOIN addresses a ON u.id=a.user_id; > > > // Query style in question > SELECT u.*, a.city FROM users u, addresses a ON u.id=a.user_id; > > If not ON, is there at least another viable argument? The reason I'm > interested is for a query involving 5 or 6 tables and WHERE arguments > which do not deal with the relationships. I would like to assure the > efficiency of this query. > > > Thanks in advance, > Matt -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
