whoisgregg - 6:08 pm on Aug 19, 2010 (gmt 0)
You could create an additional column that has all hyphens removed from it.
UPDATE `table` SET `search_column` = REPLACE(`sku`, '-', '');
Then just run your queries against `search_column` instead of against `sku`. Whenever someone does an UPDATE/INSERT just make sure you are populating your `search_column` value properly. :)