Re: GSoC idea - Simulated annealing to search for query plans

On 2015-02-26 20:23:33 -0500, Tom Lane wrote:
> Josh Berkus <josh@agliodbs.com> writes:
> > On 02/26/2015 01:59 PM, Grzegorz Parka wrote:
> >> I'm interested in one of old TODO items related to the optimizer -
> >> 'Consider compressed annealing to search for query plans'.
>
> > You might look at the earlier attempt to make the GEQO replacement
> > "pluggable".  That project failed to complete sufficiently to be a
> > feature though, but it did enough to show that our current GEQO
> > implementation was suboptimal.
>
> > I'm currently searching for this project ... it was a GSOC project, but
> > I think before they required posting to Google Code.
>
> I seem to recall somebody demo'ing a simulated-annealing GEQO replacement
> at PGCon a couple years back.  It never got to the point of being a
> submitted patch though.

Yea, it was Jan Urbański (CCed).

Greetings,

Andres Freund

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