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pgsql-server: Hashed LEFT JOIN would miss outer tuples with no inner

From: tgl(at)svr1(dot)postgresql(dot)org (Tom Lane)
To: pgsql-committers(at)postgresql(dot)org
Subject: pgsql-server: Hashed LEFT JOIN would miss outer tuples with no inner
Date: 2004-09-17 18:29:40
Message-ID: 20040917182940.E33A5329DFC@svr1.postgresql.org (view raw or flat)
Thread:
Lists: pgsql-committers
Log Message:
-----------
Hashed LEFT JOIN would miss outer tuples with no inner match if the join
was large enough to be batched and the tuples fell into a batch where
there were no inner tuples at all.  Thanks to Xiaoyu Wang for finding a
test case that exposed this long-standing bug.

Tags:
----
REL7_2_STABLE

Modified Files:
--------------
    pgsql-server/src/backend/executor:
        nodeHashjoin.c (r1.39 -> r1.39.2.1)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/backend/executor/nodeHashjoin.c.diff?r1=1.39&r2=1.39.2.1)

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