Re: Performance improvement for joins where outer side is unique

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 11:23:29
Message-ID: CAKJS1f8Vid9bH8kvNc9nafEny3dRNqpawaNcYVyFzq11zMg5=w@mail.gmail.com
Views: Raw Message | Whole Thread | Download mbox
Thread:
Lists: pgsql-hackers

On 2 April 2017 at 21:21, David Rowley <david(dot)rowley(at)2ndquadrant(dot)com> wrote:

> 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.
>

The patch must've fallen off. Attempt number 2 at attaching.

--
David Rowley http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services

Attachment Content-Type Size
unique_joins_2017-04-02.patch application/octet-stream 95.9 KB

In response to

Responses

Browse pgsql-hackers by date

  From Date Subject
Next Message David Rowley 2017-04-02 12:41:21 Re: BRIN cost estimate
Previous Message Robert Haas 2017-04-02 11:19:09 Re: Performance improvement for joins where outer side is unique