Now that I've given your problem more thoughts (and searched for similar stuff), I think what you need is generating a cross table resp. pivot table. Related to this, I am thinking of a query using Conditional Expressions like COUNT ( CASE WHEN ... THEN 1 ELSE NULL) in order to use GROUP BY. Together with Richard's idea of using a function age_range(date) it seems realizable. I'm not yet ready to make a more detailed proposal, but you might want to think about it in the meantime, too.
Regards, Christoph ---------------------------(end of broadcast)--------------------------- TIP 1: subscribe and unsubscribe commands go to [EMAIL PROTECTED]
