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I`m sorry, but why work around?<br>
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The overhead of "99%" of cases is so bigger? What about an "option"
like constraint exclusion...<br>
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I've worked around also, but would like to see this topic in a TODO or
further implementation.<br>
<br>
Thanks by patience.<br>
<br>
<br>
<br>
Kevin Grittner escreveu:
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<pre wrap="">On Sat, Oct 6, 2007 at 11:28 AM, in message <a class="moz-txt-link-rfc2396E" href="mailto:24828(dot)1191688097(at)sss(dot)pgh(dot)pa(dot)us"><24828(dot)1191688097(at)sss(dot)pgh(dot)pa(dot)us></a>,
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<pre wrap=""><!---->Tom Lane <a class="moz-txt-link-rfc2396E" href="mailto:tgl(at)sss(dot)pgh(dot)pa(dot)us"><tgl(at)sss(dot)pgh(dot)pa(dot)us></a> wrote:
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<pre wrap="">I've been wondering
if it would be worth the trouble to introduce scalarlesel and
scalargesel estimators ...
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<pre wrap=""><!---->
FWIW, this is an issue we ran into:
<a class="moz-txt-link-freetext" href="http://archives.postgresql.org/pgsql-performance/2006-03/msg00211.php">http://archives.postgresql.org/pgsql-performance/2006-03/msg00211.php</a>
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.
-Kevin
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