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< * Have EXPLAIN ANALYZE highlight poor optimizer estimates
> * Have EXPLAIN ANALYZE issue NOTICE messages when the estimated and
>   actual row counts differ by a specified percentage
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Bruce Momjian 2006-12-12 22:31:19 +00:00
parent f18c57fdf1
commit 8283cd7663
2 changed files with 6 additions and 4 deletions
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doc/TODO
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PostgreSQL TODO List PostgreSQL TODO List
==================== ====================
Current maintainer: Bruce Momjian (bruce@momjian.us) Current maintainer: Bruce Momjian (bruce@momjian.us)
Last updated: Tue Dec 12 15:34:25 EST 2006 Last updated: Tue Dec 12 17:31:12 EST 2006
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.
@ -1187,7 +1187,8 @@ Optimizer / Executor
* Precompile SQL functions to avoid overhead * Precompile SQL functions to avoid overhead
* Create utility to compute accurate random_page_cost value * Create utility to compute accurate random_page_cost value
* Improve ability to display optimizer analysis using OPTIMIZER_DEBUG * Improve ability to display optimizer analysis using OPTIMIZER_DEBUG
* Have EXPLAIN ANALYZE highlight poor optimizer estimates * Have EXPLAIN ANALYZE issue NOTICE messages when the estimated and
actual row counts differ by a specified percentage
* Consider using hash buckets to do DISTINCT, rather than sorting * Consider using hash buckets to do DISTINCT, rather than sorting
This would be beneficial when there are few distinct values. This is 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"> <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:bruce@momjian.us">bruce@momjian.us</a>)<br/> <p>Current maintainer: Bruce Momjian (<a href="mailto:bruce@momjian.us">bruce@momjian.us</a>)<br/>
Last updated: Tue Dec 12 15:34:25 EST 2006 Last updated: Tue Dec 12 17:31:12 EST 2006
</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>.
@ -1073,7 +1073,8 @@ first.
</li><li>Precompile SQL functions to avoid overhead </li><li>Precompile SQL functions to avoid overhead
</li><li>Create utility to compute accurate random_page_cost value </li><li>Create utility to compute accurate random_page_cost value
</li><li>Improve ability to display optimizer analysis using OPTIMIZER_DEBUG </li><li>Improve ability to display optimizer analysis using OPTIMIZER_DEBUG
</li><li>Have EXPLAIN ANALYZE highlight poor optimizer estimates </li><li>Have EXPLAIN ANALYZE issue NOTICE messages when the estimated and
actual row counts differ by a specified percentage
</li><li>Consider using hash buckets to do DISTINCT, rather than sorting </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 <p> This would be beneficial when there are few distinct values. This is
already used by GROUP BY. already used by GROUP BY.