Re: Optimizing maximum/minimum queries (yet again) - Mailing list pgsql-hackers

From Tom Lane
Subject Re: Optimizing maximum/minimum queries (yet again)
Date
Msg-id 18864.1113017873@sss.pgh.pa.us
Whole thread Raw
In response to Re: Optimizing maximum/minimum queries (yet again)  (Bruno Wolff III)
List pgsql-hackers
Bruno Wolff III <> writes:
> Thinking about the case for NULLs some more, I am wondering if you are
> going to treat aggregates with strict state functions different than
> those that don't?

We only intend this to support MAX and MIN.  If you're inventing an
aggregate that doesn't play exactly by those rules, you don't get to
take advantage of the optimization.
        regards, tom lane


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