pgsql-server: Arrange for hash join to skip scanning the outer relation

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От tgl@svr1.postgresql.org (Tom Lane)
Тема pgsql-server: Arrange for hash join to skip scanning the outer relation
Дата
Msg-id 20040922191353.E1EDD329E8E@svr1.postgresql.org
обсуждение исходный текст
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Log Message:
-----------
Arrange for hash join to skip scanning the outer relation if it detects
that the inner one is completely empty.  Per recent discussion.  Also some
cosmetic cleanups in nearby code.

Modified Files:
--------------
    pgsql-server/src/backend/executor:
        nodeHash.c (r1.86 -> r1.87)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/backend/executor/nodeHash.c.diff?r1=1.86&r2=1.87)
        nodeHashjoin.c (r1.65 -> r1.66)

(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/backend/executor/nodeHashjoin.c.diff?r1=1.65&r2=1.66)
    pgsql-server/src/include/executor:
        hashjoin.h (r1.32 -> r1.33)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/include/executor/hashjoin.h.diff?r1=1.32&r2=1.33)

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