From: Aaron Fischer Date: October 26 2007 3:27pm Subject: Comparing keys in two tables List-Archive: http://lists.mysql.com/mysql/209701 Message-Id: <7609BE5A-F9B6-4A6E-AEF1-6A99D1F94FAA@email.smith.edu> MIME-Version: 1.0 (Apple Message framework v752.2) Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Content-Transfer-Encoding: 7bit Greetings! I have a problem that it seems would best be solved using subqueries. However, I am working on a server that is running MySQL 3.23.58, so subqueries are not available to me. What I am trying to do: I have two tables, each containing approximately 37,000 records. I want to compare the index field in Table A to the index field in Table B. I would like to see all records where the index in Table A does not exist in Table B. Thoughts? Suggestions? Much appreciated! -Aaron