Re: Performance improvement for joins where outer side is unique

From: David Rowley <david(dot)rowley(at)2ndquadrant(dot)com>
To: Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>
Cc: Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>, Simon Riggs <simon(at)2ndquadrant(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Performance improvement for joins where outer side is unique
Date: 2016-03-06 00:14:29
Message-ID: CAKJS1f8w4X6HNfQWjP+D+gMuB1o+uz_kamJyOPzYDpn7kskMmw@mail.gmail.com
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On 5 March 2016 at 10:43, Alvaro Herrera <alvherre(at)2ndquadrant(dot)com> wrote:
> I wonder why do we have two identical copies of clause_sides_match_join ...

Yeah, I noticed the same a while back, and posted about it. Here was
the response:
http://www.postgresql.org/message-id/26820.1405522310@sss.pgh.pa.us

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

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