Re: Different query plans on same servers - Mailing list pgsql-performance

From Tom Lane
Subject Re: Different query plans on same servers
Date
Msg-id 14289.1323201649@sss.pgh.pa.us
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In response to Different query plans on same servers  (Mario Splivalo <mario.splivalo@megafon.hr>)
Responses Re: Different query plans on same servers
Re: Different query plans on same servers
Re: Different query plans on same servers
List pgsql-performance
Mario Splivalo <mario.splivalo@megafon.hr> writes:
> I have 8.4.8 on producion and 8.4.9 on test, could that explain the
> difference in plans chosen?

I'd wonder first if you have the same statistics settings on both.
The big problem here is that the estimation of the join size is bad
(8588 versus 0).

            regards, tom lane

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