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: Robert Haas <robertmhaas(at)gmail(dot)com>, Haribabu Kommi <kommi(dot)haribabu(at)gmail(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Performance improvement for joins where outer side is unique
Date: 2017-01-18 23:29:15
Message-ID: CAKJS1f9-WLTw78EkUgwbDLXz0Cn8qu6xHme-p4XNXO_Pwvm8OQ@mail.gmail.com
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On 19 January 2017 at 11:06, David Rowley <david(dot)rowley(at)2ndquadrant(dot)com> wrote:
> Old patch no longer applies, so I've attached a rebased patch. This
> also re-adds a comment line which I mistakenly removed.

(meanwhile Andres commits 69f4b9c)

I should've waited a bit longer.

Here's another that fixes the new conflicts.

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

Attachment Content-Type Size
unique_joins_2017-01-19a.patch text/x-patch 77.2 KB

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