Re: 7.3 support for IN

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От Martijn van Oosterhout
Тема Re: 7.3 support for IN
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Msg-id 20020719105202.C10333@svana.org
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Ответ на 7.3 support for IN  ("Gregory Wood" <gregw@com-stock.com>)
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On Thu, Jul 18, 2002 at 01:52:44PM -0400, Gregory Wood wrote:
> Before anyone starts thinking it, yes, I am aware that INs are really slow
> in PostgreSQL. That being said... I was doing some tests with big IN
> statements and various workarounds and was shocked at some of the results.

I hope those values were averaged out over a few runs. Measuring something as
16ms with a single run makes it statistically invalid. Maybe PostgreSQL
happened to lose it's timeslice just as the EXISTS query came along, blowing
any results completely out of the water.
--
Martijn van Oosterhout   <kleptog@svana.org>   http://svana.org/kleptog/
> There are 10 kinds of people in the world, those that can do binary
> arithmetic and those that can't.

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