Perhaps this is more of a general SQL question than a MySQL specific one, and I may be exposing my ignorance by asking this, but I figure it's worth a shot.
I have two tables, 'a' and 'b'. Each contains a value 'c'. I want to select all 'a' rows where a.c is not in the set of b.c. Is this possible using a single query? What I do now is select all the b.c values, build up a where clause from those results, then select from a, but it's an extra query I'd rather not do. Thanks for any help anyone out there can provide. -Moishe --------------------------------------------------------------------- Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail <[EMAIL PROTECTED]> To unsubscribe, e-mail <[EMAIL PROTECTED]> Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
