But (in at least some situations) is not appropriate to record that you know that you don't have a value?
I think the words of Donald Rumsfeld are appropriate here: "There are known knowns. These are things we know that we know. There are known unknowns. That is to say, there are things that we know we don't know. But there are also unknown unknowns. There are things we don't know we don't know." At 12:02 pm +0100 16/3/06, Martijn Tonies wrote: >Well, the question still is if you should store "unknown" at all ;) > >Not according to Date: you should store what is known. <snip> -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]