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Re: constraints in algebra instead of calculus

From: Jon Heggland <jon.heggland_at_idi.ntnu.no>
Date: Tue, 19 Jun 2007 10:10:32 +0200
Message-ID: <f5831n$bii$1@orkan.itea.ntnu.no> 





David Cressey wrote:


> I can't see much use for grouping on all attributes.  It seems to me that

> this has to be a null operation.




Why?

-- 
Jon


Received on Tue Jun 19 2007 - 03:10:32 CDT












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