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Patch: improve selectivity estimation for IN/NOT IN - Mailing list pgsql-hackers

From Daniele Varrazzo
Subject Patch: improve selectivity estimation for IN/NOT IN
Date
Msg-id CA+mi_8aPEAzBgWZpNTABGM=cSq7mRMyPWbMsU8eGmUfH75OTLA@mail.gmail.com
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Responses Re: Patch: improve selectivity estimation for IN/NOT IN  (Tom Lane <tgl@sss.pgh.pa.us>)
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Hello,

the attached patch improves the array selectivity estimation for = ANY
and <> ALL, hence for the IN/NOT IN operators, to avoid the
shortcoming described in
<http://archives.postgresql.org/pgsql-performance/2012-03/msg00006.php>.

Cheers,

-- Daniele
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