Folks,

Please find enclosed a patch that shows how to get a quick
approximation of count(*) on a table.

Cheers,
D
--
David Fetter david@fetter.org http://fetter.org/
phone: +1 510 893 6100 mobile: +1 415 235 3778

Remember to vote!


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David Fetter <david@fetter.org> writes:
> Please find enclosed a patch that shows how to get a quick
> approximation of count(*) on a table.

I'm not sure we should be encouraging people to look at reltuples...
for one thing, it's deliberately a moving average under 8.0.

regards, tom lane

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On Thu, Mar 24, 2005 at 12:34:51PM -0500, Tom Lane wrote:
> David Fetter <david@fetter.org> writes:
> > Please find enclosed a patch that shows how to get a quick
> > approximation of count(*) on a table.
>
> I'm not sure we should be encouraging people to look at reltuples...
> for one thing, it's deliberately a moving average under 8.0.

Should there be more caveats?

Cheers,
D
--
David Fetter david@fetter.org http://fetter.org/
phone: +1 510 893 6100 mobile: +1 415 235 3778

Remember to vote!

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