On Fri, Apr 11, 2008 at 6:47 AM, Ben Clewett <[EMAIL PROTECTED]> wrote: > A COUNT() forces the system to read every row in order to count them... That is not strictly the case. A count(field) can use an index scan rather than a sequential scan, which may or may not be faster. Also some count(field) can queries be optimized away if a field is NOT NULL and the type is myisam.
Posting a >Show status; might be useful. DDL is always helpful... -- Rob Wultsch [EMAIL PROTECTED] wultsch (aim) -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
