> okay, with gdb i can see that this column becomes a blob (thereby > not allowing heap tables to be used - which has got to be costing > me speed), is there any function i can use to 'cast' this column > to a fixed length? hrm, apparently LEFT(SUBSTRING(MAX(CONCAT())), N) will do that for me... sorry for thinking out loud ;-) --------------------------------------------------------------------- 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
