From: "Frank Bax" > I have a table with datetime field and I would like to select all data > older than "X" weeks, where "X" is a variable in my php script.
SELECT (.....) WHERE `datetime_field` < NOW() - INTERVAL (7*X) DAY This way you compare the datetime field with a constant (the expression results in a constant), so MySQL can use an index if there is one for the datetime field. Regards, Jigal. -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
