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> * -Use index to restrict rows returned by multi-key index when used with
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Bruce Momjian 2005-06-14 03:20:10 +00:00
parent 2ee0d5549f
commit 189f89cb0e
2 changed files with 4 additions and 4 deletions
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doc/TODO
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@ -2,7 +2,7 @@
PostgreSQL TODO List PostgreSQL TODO List
==================== ====================
Current maintainer: Bruce Momjian (pgman@candle.pha.pa.us) Current maintainer: Bruce Momjian (pgman@candle.pha.pa.us)
Last updated: Wed Jun 8 23:00:21 EDT 2005 Last updated: Mon Jun 13 23:19:51 EDT 2005
The most recent version of this document can be viewed at The most recent version of this document can be viewed at
http://www.postgresql.org/docs/faqs.TODO.html. http://www.postgresql.org/docs/faqs.TODO.html.
@ -307,7 +307,7 @@ Indexes
BY col {DESC} LIMIT 1. Completing this item involves doing this BY col {DESC} LIMIT 1. Completing this item involves doing this
transformation automatically. transformation automatically.
* Use index to restrict rows returned by multi-key index when used with * -Use index to restrict rows returned by multi-key index when used with
non-consecutive keys to reduce heap accesses non-consecutive keys to reduce heap accesses
For an index on col1,col2,col3, and a WHERE clause of col1 = 5 and For an index on col1,col2,col3, and a WHERE clause of col1 = 5 and

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doc/src/FAQ/TODO.html
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<body bgcolor="#FFFFFF" text="#000000" link="#FF0000" vlink="#A00000" alink="#0000FF"> <body bgcolor="#FFFFFF" text="#000000" link="#FF0000" vlink="#A00000" alink="#0000FF">
<h1><a name="section_1">PostgreSQL TODO List</a></h1> <h1><a name="section_1">PostgreSQL TODO List</a></h1>
<p>Current maintainer: Bruce Momjian (<a href="mailto:pgman@candle.pha.pa.us">pgman@candle.pha.pa.us</a>)<br/> <p>Current maintainer: Bruce Momjian (<a href="mailto:pgman@candle.pha.pa.us">pgman@candle.pha.pa.us</a>)<br/>
Last updated: Wed Jun 8 23:00:21 EDT 2005 Last updated: Mon Jun 13 23:19:51 EDT 2005
</p> </p>
<p>The most recent version of this document can be viewed at<br/> <p>The most recent version of this document can be viewed at<br/>
<a href="http://www.postgresql.org/docs/faqs.TODO.html">http://www.postgresql.org/docs/faqs.TODO.html</a>. <a href="http://www.postgresql.org/docs/faqs.TODO.html">http://www.postgresql.org/docs/faqs.TODO.html</a>.
@ -287,7 +287,7 @@ first.
BY col {DESC} LIMIT 1. Completing this item involves doing this BY col {DESC} LIMIT 1. Completing this item involves doing this
transformation automatically. transformation automatically.
</p> </p>
</li><li>Use index to restrict rows returned by multi-key index when used with </li><li>-<em>Use index to restrict rows returned by multi-key index when used with</em>
non-consecutive keys to reduce heap accesses non-consecutive keys to reduce heap accesses
<p> For an index on col1,col2,col3, and a WHERE clause of col1 = 5 and <p> For an index on col1,col2,col3, and a WHERE clause of col1 = 5 and
col3 = 9, spin though the index checking for col1 and col3 matches, col3 = 9, spin though the index checking for col1 and col3 matches,