Re: Very poor estimates from planner

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От Rod Taylor
Тема Re: Very poor estimates from planner
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Msg-id 1068076940.53233.11.camel@jester
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Ответ на Re: Very poor estimates from planner  (Tom Lane <tgl@sss.pgh.pa.us>)
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On Wed, 2003-11-05 at 18:57, Tom Lane wrote:
> Rod Taylor <rbt@rbt.ca> writes:
> >> I'm not sure if that will actually change the default_statistics_target
>
> > Hmm.. I was under the impression that it would work for any tables that
> > haven't otherwise been overridden.
>
> It will.  I think Scott is recalling the original circa-7.2
> implementation, where it wouldn't.  If you're unsure that you
> affected it, check out the actual sizes of the array values in pg_stats.

The plan does change when I remove it and re-analyze it.

Either way, it's off by a factor of a 10^5 or so.

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