More info. If the tables look like this: customers ------------------ cust_id signup_date
orders ------------------ order_id cust_id order_date Then the SQL needs to accomplish something like this: select * from customers left join orders on customers.cust_id = orders.cust_id where signup_date < now() - interval 14 day and sum(if(order_date > now() - interval 14 day, 1, 0)) = 0 But that gives me "Invalid use of group function". -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/mysql?unsub=arch...@jab.org
