Re: [PATCHES] Approximate count(*)

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

You should mention that ANALYZE will also populate reltuples.

To be real anal, you should say pg_catalog.pg_class too. :)

Tom Lane asked:
>> 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?

Well, it already says "approximate", the value-laden word is "good".
Perhaps if that went away...

- --
Greg Sabino Mullane greg@turnstep.com
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