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Add to TODO: 

> * Improve how ANALYZE computes in-doubt tuples
>
>   http://archives.postgresql.org/pgsql-hackers/2007-11/msg00771.php
>
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Bruce Momjian 2008-04-03 16:37:07 +00:00
parent 51e1445f10
commit d3bf8c7097
2 changed files with 9 additions and 2 deletions
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doc/TODO
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@ -1,7 +1,7 @@
PostgreSQL TODO List
====================
Current maintainer: Bruce Momjian (bruce@momjian.us)
Last updated: Wed Apr 2 21:55:58 EDT 2008
Last updated: Thu Apr 3 12:36:59 EDT 2008
The most recent version of this document can be viewed at
http://www.postgresql.org/docs/faqs.TODO.html.
@ -1620,6 +1620,10 @@ Optimizer / Executor
* Improve ability to display optimizer analysis using OPTIMIZER_DEBUG
* Have EXPLAIN ANALYZE issue NOTICE messages when the estimated and
actual row counts differ by a specified percentage
* Improve how ANALYZE computes in-doubt tuples
http://archives.postgresql.org/pgsql-hackers/2007-11/msg00771.php
* Consider using hash buckets to do DISTINCT, rather than sorting
This would be beneficial when there are few distinct values. This is

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doc/src/FAQ/TODO.html
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<body bgcolor="#FFFFFF" text="#000000" link="#FF0000" vlink="#A00000" alink="#0000FF">
<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: Wed Apr 2 21:55:58 EDT 2008
Last updated: Thu Apr 3 12:36:59 EDT 2008
</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>.
@ -1398,6 +1398,9 @@ first. There is also a developer's wiki at<br/>
</li><li>Improve ability to display optimizer analysis using OPTIMIZER_DEBUG
</li><li>Have EXPLAIN ANALYZE issue NOTICE messages when the estimated and
actual row counts differ by a specified percentage
</li><li>Improve how ANALYZE computes in-doubt tuples
<p> <a href="http://archives.postgresql.org/pgsql-hackers/2007-11/msg00771.php">http://archives.postgresql.org/pgsql-hackers/2007-11/msg00771.php</a>
</p>
</li><li>Consider using hash buckets to do DISTINCT, rather than sorting
<p> This would be beneficial when there are few distinct values. This is
already used by GROUP BY.