pgsql: Recent changes to allow hash join to exit early given empty input

From: tgl(at)postgresql(dot)org (Tom Lane)
To: pgsql-committers(at)postgresql(dot)org
Subject: pgsql: Recent changes to allow hash join to exit early given empty input
Date: 2005-11-28 17:14:23
Message-ID: 20051128171423.B19549DCB6F@postgresql.org
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Log Message:
-----------
Recent changes to allow hash join to exit early given empty input from
one child or the other had a problem: they did not leave the node in a
state that ExecReScanHashJoin would understand. In particular it would
tend to fail to reset the child plans when needed. Per report from
Mario Weilguni.

Modified Files:
--------------
pgsql/src/backend/executor:
nodeHashjoin.c (r1.77 -> r1.78)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/executor/nodeHashjoin.c.diff?r1=1.77&r2=1.78)

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