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Re: pgsql: Support RIGHT and FULL OUTER JOIN in hash joins.

From: Robert Haas <robertmhaas(at)gmail(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: pgsql-committers(at)postgresql(dot)org
Subject: Re: pgsql: Support RIGHT and FULL OUTER JOIN in hash joins.
Date: 2010-12-31 02:02:01
Message-ID: AANLkTi=MDaMvTDhzQiSa3LaMGXx_8ScgPaRramzFxd7M@mail.gmail.com (view raw or flat)
Thread:
Lists: pgsql-committers
On Thu, Dec 30, 2010 at 8:26 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> Support RIGHT and FULL OUTER JOIN in hash joins.

This is cool, but on first blush your changes to
add_paths_to_joinrel() appear to be total nonsense.  I think the
problem is that have_nonmergeable_clause is really a misnomer - it's
not clear until you read through the whole diff that this won't get
set for inner/left joins.

-- 
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

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Subject: Re: pgsql: Support RIGHT and FULL OUTER JOIN in hash joins.
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