PostgreSQL TODO List
====================
Current maintainer: Bruce Momjian (bruce@momjian.us)
-Last updated: Wed Jan 10 23:48:50 EST 2007
+Last updated: Sat Jan 13 10:13:24 EST 2007
The most recent version of this document can be viewed at
http://www.postgresql.org/docs/faqs.TODO.html.
http://archives.postgresql.org/pgsql-patches/2005-11/msg00045.php
- o Fix memory leak from exceptions
-
- http://archives.postgresql.org/pgsql-performance/2006-06/msg00305.php
-
o Fix problems with RETURN NEXT on tables with
dropped/added columns after function creation
one column or expression indexes, perhaps using per-index statistics
* -Allow the creation of indexes with mixed ascending/descending
specifiers
-* 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
* Consider compressing indexes by storing key values duplicated in
several rows as a single index entry
faster than a sequential scan it must avoid access to the heap
to obtain tuple visibility information.
-* Add estimated_count(*) to return an estimate of COUNT(*)
-
- This would use the planner ANALYZE statistics to return an estimated
- count.
- http://archives.postgresql.org/pgsql-hackers/2005-11/msg00943.php
-
* Allow data to be pulled directly from indexes
Currently indexes do not have enough tuple visibility information
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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: Wed Jan 10 23:48:50 EST 2007
+Last updated: Sat Jan 13 10:13:24 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>.
</p>
</li><li>Allow PL/RETURN to return row or record functions
<p> <a href="http://archives.postgresql.org/pgsql-patches/2005-11/msg00045.php">http://archives.postgresql.org/pgsql-patches/2005-11/msg00045.php</a>
-</p>
- </li><li>Fix memory leak from exceptions
-<p> <a href="http://archives.postgresql.org/pgsql-performance/2006-06/msg00305.php">http://archives.postgresql.org/pgsql-performance/2006-06/msg00305.php</a>
</p>
</li><li>Fix problems with RETURN NEXT on tables with
dropped/added columns after function creation
one column or expression indexes, perhaps using per-index statistics
</li><li>-<em>Allow the creation of indexes with mixed ascending/descending</em>
specifiers
- </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
</li><li>Consider compressing indexes by storing key values duplicated in
several rows as a single index entry
<p> This is difficult because it requires datatype-specific knowledge.
get a count directly from a unique index, but for this to be
faster than a sequential scan it must avoid access to the heap
to obtain tuple visibility information.
-</p>
- </li><li>Add estimated_count(*) to return an estimate of COUNT(*)
-<p> This would use the planner ANALYZE statistics to return an estimated
- count.
- <a href="http://archives.postgresql.org/pgsql-hackers/2005-11/msg00943.php">http://archives.postgresql.org/pgsql-hackers/2005-11/msg00943.php</a>
</p>
</li><li>Allow data to be pulled directly from indexes
<p> Currently indexes do not have enough tuple visibility information