Re: POC: GROUP BY optimization

> 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?