Re: Query optimizer 8.0.1 (and 8.0)

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От Alvaro Herrera
Тема Re: Query optimizer 8.0.1 (and 8.0)
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Msg-id 20050207223133.GB30539@dcc.uchile.cl
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Ответ на Re: Query optimizer 8.0.1 (and 8.0)  (pgsql@mohawksoft.com)
Ответы Re: Query optimizer 8.0.1 (and 8.0)  (pgsql@mohawksoft.com)
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On Mon, Feb 07, 2005 at 05:16:56PM -0500, pgsql@mohawksoft.com wrote:
> > On Mon, Feb 07, 2005 at 13:28:04 -0500,
> >
> > What you are saying here is that if you want more accurate statistics, you
> > need to sample more rows. That is true. However, the size of the sample
> > is essentially only dependent on the accuracy you need and not the size
> > of the population, for large populations.
> >
> That's nonsense.

Huh, have you studied any statistics?

-- 
Alvaro Herrera (<alvherre[@]dcc.uchile.cl>)
"At least to kernel hackers, who really are human, despite occasional
rumors to the contrary" (LWN.net)


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