Re: [HACKERS] advanced partition matching algorithm forpartition-wise join - Mailing list pgsql-hackers

From Etsuro Fujita
Subject Re: [HACKERS] advanced partition matching algorithm forpartition-wise join
Date
Msg-id CAPmGK14-7WNAbxn1j_aYcgm2vWOgYCufUJVDPs1B1P3jHOeEKg@mail.gmail.com
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In response to Re: [HACKERS] advanced partition matching algorithm forpartition-wise join  (Thomas Munro <thomas.munro@gmail.com>)
Responses Re: [HACKERS] advanced partition matching algorithm forpartition-wise join  (amul sul <sulamul@gmail.com>)
List pgsql-hackers
On Mon, Jul 1, 2019 at 6:50 PM Thomas Munro <thomas.munro@gmail.com> wrote:
> On Sat, May 18, 2019 at 12:20 AM Robert Haas <robertmhaas@gmail.com> wrote:
> > On Tue, May 14, 2019 at 12:24 AM Amit Langote
> > <Langote_Amit_f8@lab.ntt.co.jp> wrote:
> > > He did mention that cases where the nullable side is provably empty can be
> > > handled by simply returning the path of the non-nullable side with
> > > suitable projection path added on top to emit NULLs for the columns of the
> > > nullable-side.  If we teach populate_joinrel_with_paths() and underlings
> > > about that, then we can allow partitionwise join even in the case where
> > > the nullable side has some partitions missing.
> >
> > Yes, I think that would be a good approach to pursue.
>
> Hi Ashutosh, Amul, Fujita-san,
>
> Could we please have a fresh rebase for the new Commitfest?

Will do unless Ashutosh, Amul, or anyone wants to.

Thanks!

Best regards,
Etsuro Fujita



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