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>
>   A more complex solution would be to save multiple plans for different
>   cardinality and use the appropriate plan based on the EXECUTE values.
>
This commit is contained in:
Bruce Momjian 2005-12-22 23:05:32 +00:00
parent 656beff590
commit 2f1a78e200
2 changed files with 9 additions and 2 deletions
doc
TODO
src/FAQ
TODO.html

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doc/TODO

@ -2,7 +2,7 @@
PostgreSQL TODO List
====================
Current maintainer: Bruce Momjian (pgman@candle.pha.pa.us)
Last updated: Sat Dec 17 14:03:20 EST 2005
Last updated: Thu Dec 22 18:05:31 EST 2005
The most recent version of this document can be viewed at
http://www.postgresql.org/docs/faqs.TODO.html.
@ -718,6 +718,10 @@ Dependency Checking
* Flush cached query plans when the dependent objects change,
when the cardinality of parameters changes dramatically, or
when new ANALYZE statistics are available
A more complex solution would be to save multiple plans for different
cardinality and use the appropriate plan based on the EXECUTE values.
* Track dependencies in function bodies and recompile/invalidate
This is particularly important for references to temporary tables

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doc/src/FAQ/TODO.html

@ -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:pgman@candle.pha.pa.us">pgman@candle.pha.pa.us</a>)<br/>
Last updated: Sat Dec 17 14:03:20 EST 2005
Last updated: Thu Dec 22 18:05:31 EST 2005
</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>.
@ -655,6 +655,9 @@ first.
<li>Flush cached query plans when the dependent objects change,
when the cardinality of parameters changes dramatically, or
when new ANALYZE statistics are available
<p> A more complex solution would be to save multiple plans for different
cardinality and use the appropriate plan based on the EXECUTE values.
</p>
</li><li>Track dependencies in function bodies and recompile/invalidate
<p> This is particularly important for references to temporary tables
in PL/PgSQL because PL/PgSQL caches query plans. The only workaround