Re: BUG #3657: Performance leaks when using between of two equal dates

>>> On Sat, Oct 6, 2007 at 11:28 AM, in message <24828.1191688097@sss.pgh.p=
a.us>,
Tom Lane <tgl@sss.pgh.pa.us> wrote:=20
> I've been wondering
> if it would be worth the trouble to introduce scalarlesel and
> scalargesel estimators ...
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FWIW, this is an issue we ran into:
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http://archives.postgresql.org/pgsql-performance/2006-03/msg00211.php
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We worked around it in our framework by checking for a range with equal
values and converting to an equality test before presenting it to the
database.
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-Kevin
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