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<P>In pre-8.0 releases, indexes often can not be used unless the data
    types exactly match the index's column types.  This is particularly
    true of int2, int8, and numeric column indexes.</P>
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Bruce Momjian 2004-09-01 03:28:15 +00:00
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doc/FAQ
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Frequently Asked Questions (FAQ) for PostgreSQL
Last updated: Wed Aug 25 23:18:13 EDT 2004
Last updated: Tue Aug 31 23:28:02 EDT 2004
Current maintainer: Bruce Momjian (pgman@candle.pha.pa.us)
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section 4.12.
* The default C locale must be used during initdb.
In pre-8.0 releases, indexes often can not be used unless the data
types exactly match the index's column types. This is particularly
true of int2, int8, and numeric column indexes.
4.9) How do I see how the query optimizer is evaluating my query?
See the EXPLAIN manual page.

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doc/src/FAQ/FAQ.html
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alink="#0000ff">
<H1>Frequently Asked Questions (FAQ) for PostgreSQL</H1>
<P>Last updated: Wed Aug 25 23:18:13 EDT 2004</P>
<P>Last updated: Tue Aug 31 23:28:02 EDT 2004</P>
<P>Current maintainer: Bruce Momjian (<A href=
"mailto:pgman@candle.pha.pa.us">pgman@candle.pha.pa.us</A>)<BR>
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</UL>
<P>
<P>In pre-8.0 releases, indexes often can not be used unless the data
types exactly match the index's column types. This is particularly
true of int2, int8, and numeric column indexes.</P>
<H4><A name="4.9">4.9</A>) How do I see how the query optimizer is
evaluating my query?</H4>