PostgreSQL TODO List
====================
Current maintainer: Bruce Momjian (bruce@momjian.us)
-Last updated: Sun Apr 29 03:17:05 EDT 2007
+Last updated: Fri May 4 23:14:29 EDT 2007
The most recent version of this document can be viewed at
http://www.postgresql.org/docs/faqs.TODO.html.
====================
* Improve selectivity functions for geometric operators
-* Allow ORDER BY ... LIMIT # to select high/low value without sort or
+* -Allow ORDER BY ... LIMIT # to select high/low value without sort or
index using a sequential scan for highest/lowest values
-
- Right now, if no index exists, ORDER BY ... LIMIT # requires we sort
- all values to return the high/low value. Instead The idea is to do a
- sequential scan to find the high/low value, thus avoiding the sort.
- MIN/MAX already does this, but not for LIMIT > 1.
-
* Precompile SQL functions to avoid overhead
* Create utility to compute accurate random_page_cost value
* Improve ability to display optimizer analysis using OPTIMIZER_DEBUG
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<h1><a name="section_1">PostgreSQL TODO List</a></h1>
<p>Current maintainer: Bruce Momjian (<a href="mailto:bruce@momjian.us">bruce@momjian.us</a>)<br/>
-Last updated: Sun Apr 29 03:17:05 EDT 2007
+Last updated: Fri May 4 23:14:29 EDT 2007
</p>
<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>.
<ul>
<li>Improve selectivity functions for geometric operators
- </li><li>Allow ORDER BY ... LIMIT # to select high/low value without sort or
+ </li><li>-<em>Allow ORDER BY ... LIMIT # to select high/low value without sort or</em>
index using a sequential scan for highest/lowest values
-<p> Right now, if no index exists, ORDER BY ... LIMIT # requires we sort
- all values to return the high/low value. Instead The idea is to do a
- sequential scan to find the high/low value, thus avoiding the sort.
- MIN/MAX already does this, but not for LIMIT > 1.
-</p>
</li><li>Precompile SQL functions to avoid overhead
</li><li>Create utility to compute accurate random_page_cost value
</li><li>Improve ability to display optimizer analysis using OPTIMIZER_DEBUG
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