Re: POC: GROUP BY optimization - Mailing list pgsql-hackers

From Andres Freund
Subject Re: POC: GROUP BY optimization
Date
Msg-id 20190131112407.zpbysdvghjyh4z47@alap3.anarazel.de
Whole thread Raw
In response to Re: POC: GROUP BY optimization  (Dmitry Dolgov <9erthalion6@gmail.com>)
Responses Re: POC: GROUP BY optimization  (Dmitry Dolgov <9erthalion6@gmail.com>)
List pgsql-hackers
On 2018-11-29 17:56:53 +0100, Dmitry Dolgov wrote:
> > On Tue, Oct 2, 2018 at 4:16 AM Michael Paquier <michael@paquier.xyz> wrote:
> >
> > On Sat, Jun 30, 2018 at 09:19:13AM +1200, Gavin Flower wrote:
> > > Additionally put an upper limit threshold on the number of combinations to
> > > check, fairly large by default?
> > >
> > > If first threshold is exceeded, could consider checking out a few more
> > > selected at random from paths not yet checked, to avoid any bias caused by
> > > stopping a systematic search.  This might prove important when N! is fairly
> > > large.
> >
> > Please note that the latest patch available does not apply, so this has
> > been moved to next CF 2018-11, waiting for input from its author.
> 
> Unfortunately, patch still has some conflicts, could you please rebase it?

As nothing has happened since, I'm marking this as returned with
feedback.

Greetings,

Andres Freund


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