Re: Re: Reusing abbreviated keys during second pass of ordered [set] aggregates

From: Peter Geoghegan <pg(at)heroku(dot)com>
To: Andreas Karlsson <andreas(at)proxel(dot)se>
Cc: Jeff Janes <jeff(dot)janes(at)gmail(dot)com>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Re: Reusing abbreviated keys during second pass of ordered [set] aggregates
Date: 2015-12-07 03:28:48
Message-ID: CAM3SWZQz5Yg0qF-y7Gqt81NMZsC2pYuUfREuW8T2peCj50N3iw@mail.gmail.com
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On Sun, Dec 6, 2015 at 7:14 PM, Andreas Karlsson <andreas(at)proxel(dot)se> wrote:
> I can also confirm the roughly 25% speedup in the best case (numerics which
> are all distinct) with no measurable slowdown in the worst case.
>
> Given this speedup and the small size of the patch I think we should apply
> it. I will set this patch to "Ready for Commiter".

Thanks for the review, Andreas.

--
Peter Geoghegan

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