Re: idea for concurrent seqscans

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От Jim C. Nasby
Тема Re: idea for concurrent seqscans
Дата
Msg-id 20050226000353.GQ84483@decibel.org
обсуждение исходный текст
Ответ на Re: idea for concurrent seqscans  (Tom Lane <tgl@sss.pgh.pa.us>)
Ответы Re: idea for concurrent seqscans  (Jeff Davis <jdavis-pgsql@empires.org>)
Re: idea for concurrent seqscans  (Bruce Momjian <pgman@candle.pha.pa.us>)
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On Fri, Feb 25, 2005 at 01:30:57PM -0500, Tom Lane wrote:
> Jeff Davis <jdavis-pgsql@empires.org> writes:
> > I didn't consider that. Is there a reason the regression tests assume
> > the results will be returned in a certain order (or a consistent order)?
> 
> We use diff as the checking tool.

Doesn't the SQL spec specifically state that the only time you'll get
results in a deterministic order is if you use ORDER BY? Assuming
otherwise seems a bad idea (though at least in the case of testing it
makes the test more strenuous rather than less...)
-- 
Jim C. Nasby, Database Consultant               decibel@decibel.org 
Give your computer some brain candy! www.distributed.net Team #1828

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