mirror/postgresql
2
0
Fork 0
mirror of https://git.postgresql.org/git/postgresql.git synced 2025-01-30 19:00:29 +08:00
Code Issues Packages Projects Releases Wiki Activity

Update entry:

Browse Source 
< * 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
This commit is contained in:
Bruce Momjian 2006-12-12 22:31:19 +00:00
parent f18c57fdf1
commit 8283cd7663
2 changed files with 6 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
doc/TODO
View File

@ -2,7 +2,7 @@
PostgreSQL TODO List
====================
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
http://www.postgresql.org/docs/faqs.TODO.html.
@ -1187,7 +1187,8 @@ Optimizer / Executor
* Precompile SQL functions to avoid overhead
* Create utility to compute accurate random_page_cost value
* 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
This would be beneficial when there are few distinct values. This is

5
doc/src/FAQ/TODO.html
View File

@ -8,7 +8,7 @@
<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: Tue Dec 12 15:34:25 EST 2006
Last updated: Tue Dec 12 17:31:12 EST 2006
</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>.
@ -1073,7 +1073,8 @@ first.
</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
</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
<p> This would be beneficial when there are few distinct values. This is
already used by GROUP BY.