I want to get a list of all products that either exist or do not exist. In other words, if prod.prod_pub_prod_id exists then I want to report its prod_num; if it doesn't, then I want to report the product ID with a blank value for the prod_num. I'm currently using a temporary table to do this, but it feels inelegant to me. Is there any way to do this without a temporary table?
Here's what I'm doing now: DROP TEMPORARY TABLE IF EXISTS prod_exists; CREATE TEMPORARY TABLE `giiexpr_db`.`prod_exists` ( `prod_pub_prod_id` VARCHAR( 255 ) NOT NULL , PRIMARY KEY ( `prod_pub_prod_id` ) ) ENGINE = MYISAM; INSERT INTO prod_exists VALUES ("MCP-1018"), ("MCP-1024"), ... ("MCP-1031") ; SELECT prod_exists.prod_pub_prod_id, IF(prod.prod_num IS NOT NULL,prod.prod_num,"") as GII_prod_ID FROM prod_exists LEFT JOIN prod ON prod_exists.prod_pub_prod_id = prod.prod_pub_prod_id WHERE (prod.prod_discont = 0 OR prod.prod_discont IS NULL) ORDER BY prod_exists.prod_pub_prod_id; This works fine, but is there a better way to do it? Regards, Jerry Schwartz The Infoshop by Global Information Incorporated 195 Farmington Ave. Farmington, CT 06032 860.674.8796 / FAX: 860.674.8341 www.the-infoshop.com www.giiexpress.com www.etudes-marche.com -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]