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< * Allow the creation of indexes with mixed ascending/descending
> * -Allow the creation of indexes with mixed ascending/descending
<
<   This is possible now by creating an operator class with reversed sort
<   operators.  One complexity is that NULLs would then appear at the start
<   of the result set, and this might affect certain sort types, like
<   merge join.
<
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Bruce Momjian 2007-01-09 03:43:32 +00:00
parent 833f9cb7b8
commit b0452cd87d
2 changed files with 4 additions and 15 deletions
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10
doc/TODO
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@ -2,7 +2,7 @@
PostgreSQL TODO List
====================
Current maintainer: Bruce Momjian (bruce@momjian.us)
Last updated: Sat Jan 6 17:55:06 EST 2007
Last updated: Mon Jan 8 22:43:23 EST 2007
The most recent version of this document can be viewed at
http://www.postgresql.org/docs/faqs.TODO.html.
@ -882,14 +882,8 @@ Indexes
* Allow accurate statistics to be collected on indexes with more than
one column or expression indexes, perhaps using per-index statistics
* Allow the creation of indexes with mixed ascending/descending
* -Allow the creation of indexes with mixed ascending/descending
specifiers
This is possible now by creating an operator class with reversed sort
operators. One complexity is that NULLs would then appear at the start
of the result set, and this might affect certain sort types, like
merge join.
* Allow constraint_exclusion to work for UNIONs like it does for
inheritance, allow it to work for UPDATE and DELETE statements, and allow
it to be used for all statements with little performance impact

9
doc/src/FAQ/TODO.html
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@ -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: Sat Jan 6 17:55:06 EST 2007
Last updated: Mon Jan 8 22:43:23 EST 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>.
@ -796,13 +796,8 @@ first.
</p>
</li><li>Allow accurate statistics to be collected on indexes with more than
one column or expression indexes, perhaps using per-index statistics
</li><li>Allow the creation of indexes with mixed ascending/descending
</li><li>-<em>Allow the creation of indexes with mixed ascending/descending</em>
specifiers
<p> This is possible now by creating an operator class with reversed sort
operators. One complexity is that NULLs would then appear at the start
of the result set, and this might affect certain sort types, like
merge join.
</p>
</li><li>Allow constraint_exclusion to work for UNIONs like it does for
inheritance, allow it to work for UPDATE and DELETE statements, and allow
it to be used for all statements with little performance impact