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Home -> Community -> Usenet -> c.d.o.server -> Re: Deadly sins againts database performance/scalability
Cris Carampa wrote:
> Marc Blum wrote:
>
>> (1) SELECT DISTINCT ...
Nothing when used appropriately. It has a cost associated with it and thus should only be used when it is required to produce the correct result.
-- Daniel Morgan http://www.outreach.washington.edu/ext/certificates/oad/oad_crs.asp http://www.outreach.washington.edu/ext/certificates/aoa/aoa_crs.asp damorgan_at_x.washington.edu (replace 'x' with a 'u' to reply)Received on Fri Nov 28 2003 - 12:21:09 CST