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Re: Are statistics gathered on function indexes? - Mailing list pgsql-admin

From Tom Lane
Subject Re: Are statistics gathered on function indexes?
Date
Msg-id 9703.1025298418@sss.pgh.pa.us
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In response to Re: Are statistics gathered on function indexes?  (Ray Ontko <rayo@ontko.com>)
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Ray Ontko <rayo@ontko.com> writes:
> Well, that explains the non-determinism, I guess.  It seems
> odd that if we aren't doing any updates to the data that analyze
> would give us different stats.  How does analyze pick the 3000
> rows it gets back, and should this vary from run to run if we
> aren't changing the table?

At random, and yes.  See the documentation ...

            regards, tom lane

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