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Finish implementation of hashed aggregation. Add enable_hashagg GUC

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parameter to allow it to be forced off for comparison purposes.
Add ORDER BY clauses to a bunch of regression test queries that will
otherwise produce randomly-ordered output in the new regime.
This commit is contained in:
Tom Lane
2002-11-21 00:42:20 +00:00
parent 2676e11fdf
commit 6c1d4662af
25 changed files with 457 additions and 190 deletions
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13
doc/src/sgml/runtime.sgml
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@@ -1,5 +1,5 @@
<!--
$Header: /cvsroot/pgsql/doc/src/sgml/runtime.sgml,v 1.156 2002/11/15 03:22:30 momjian Exp $
$Header: /cvsroot/pgsql/doc/src/sgml/runtime.sgml,v 1.157 2002/11/21 00:42:18 tgl Exp $
-->
<Chapter Id="runtime">
@@ -670,6 +670,17 @@ env PGOPTIONS='-c geqo=off' psql
</listitem>
</varlistentry>
<varlistentry>
<term><varname>ENABLE_HASHAGG</varname> (<type>boolean</type>)</term>
<listitem>
<para>
Enables or disables the query planner's use of hashed aggregation
plan types. The default is on. This is used for debugging the query
planner.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><varname>ENABLE_HASHJOIN</varname> (<type>boolean</type>)</term>
<listitem>