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Re: NULL-handling in aggregate(DISTINCT ...) - Mailing list pgsql-hackers

From Tom Lane
Subject Re: NULL-handling in aggregate(DISTINCT ...)
Date
Msg-id 24100.1258037606@sss.pgh.pa.us
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In response to Re: NULL-handling in aggregate(DISTINCT ...)  (Andrew Gierth <andrew@tao11.riddles.org.uk>)
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Andrew Gierth <andrew@tao11.riddles.org.uk> writes:
> A followup question: currently the code uses the "datum" interface for
> tuplesort. Obviously with multiple columns the slot interface is used
> instead; but is there any performance advantage for staying with the
> datum interface for the single-column case?

No idea ... measure it and see.
        regards, tom lane

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