| From: | David Rowley <david(dot)rowley(at)2ndquadrant(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Performance improvement for joins where outer side is unique |
| Date: | 2017-04-02 09:21:06 |
| Message-ID: | CAKJS1f9QtHDfKy3JEeaBc5E29sPz5J3euiAQHB0oq4gzjoFuoA@mail.gmail.com |
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| Lists: | pgsql-hackers |
On 27 March 2017 at 15:51, David Rowley <david(dot)rowley(at)2ndquadrant(dot)com>
wrote:
> On 27 March 2017 at 09:28, David Rowley <david(dot)rowley(at)2ndquadrant(dot)com>
> wrote:
>
> > Patch is attached which fixes up the conflict between the expression
> > evaluation performance patch.
>
> Seems I forgot to commit locally before creating the patch... Here's
> the actual patch I meant to attach earlier.
I've attached an updated patch which updates the regression test output of
a recent commit to include the "Unique Inner" in the expected results.
I've also performed a pgindent run on the patch.
Tom, I'm wondering if you think you'll get time to look at this before the
feature freeze?
David
--
David Rowley http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
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