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From [email protected] (Tom Lane)
Subject pgsql-server/src/backend/executor nodeAgg.c
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Msg-id [email protected]
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CVSROOT:    /cvsroot
Module name:    pgsql-server
Changes by:    [email protected]    03/02/03 19:48:23

Modified files:
    src/backend/executor: nodeAgg.c

Log message:
    Detect duplicate aggregate calls and evaluate only one copy.  This
    speeds up some useful real-world cases like
    SELECT x, COUNT(*) FROM t GROUP BY x HAVING COUNT(*) > 100.

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