From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
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To: | pgsql-committers(at)postgresql(dot)org |
Subject: | pgsql: Remove useless "rough estimate" path from mcelem_array_contained |
Date: | 2012-03-04 21:03:47 |
Message-ID: | E1S4Iap-0002XE-Ud@gemulon.postgresql.org |
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Lists: | pgsql-committers |
Remove useless "rough estimate" path from mcelem_array_contained_selec.
The code in this function that tried to cope with a missing count histogram
was quite ineffective for anything except a perfectly flat distribution.
Furthermore, since we were already punting for missing MCELEM slot, it's
rather useless to sweat over missing DECHIST: there are no cases where
ANALYZE will create the first but not the second. So just simplify the
code by punting rather than pretending we can do something useful.
Branch
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master
Details
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http://git.postgresql.org/pg/commitdiff/e2eed7891008cbf2b7d3868b3d77751b33ed09ad
Modified Files
--------------
src/backend/utils/adt/array_selfuncs.c | 138 ++++++++++++++-----------------
1 files changed, 62 insertions(+), 76 deletions(-)
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