> any thoughts/suggestions? > > the only thing that's different is the SUBSTRING_INDEX(MAX(CONCAT())) > construct, and i can't immediately see why that slows it down so > much... 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? --------------------------------------------------------------------- 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
