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Extend EXPLAIN to support output in XML or JSON format.

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There are probably still some adjustments to be made in the details
of the output, but this gets the basic structure in place.

Robert Haas
This commit is contained in:
Tom Lane
2009-08-10 05:46:50 +00:00
parent 18894c401f
commit 9bd27b7c9e
12 changed files with 1153 additions and 364 deletions
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20
doc/src/sgml/auto-explain.sgml
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@@ -1,4 +1,4 @@
<!-- $PostgreSQL: pgsql/doc/src/sgml/auto-explain.sgml,v 1.3 2009/01/02 01:16:02 tgl Exp $ -->
<!-- $PostgreSQL: pgsql/doc/src/sgml/auto-explain.sgml,v 1.4 2009/08/10 05:46:50 tgl Exp $ -->
<sect1 id="auto-explain">
<title>auto_explain</title>
@@ -102,6 +102,24 @@ LOAD 'auto_explain';
</listitem>
</varlistentry>
<varlistentry>
<term>
<varname>auto_explain.log_format</varname> (<type>enum</type>)
</term>
<indexterm>
<primary><varname>auto_explain.log_format</> configuration parameter</primary>
</indexterm>
<listitem>
<para>
<varname>auto_explain.log_format</varname> selects the
<command>EXPLAIN</> output format to be used.
The allowed values are <literal>text</literal>, <literal>xml</literal>,
and <literal>json</literal>. The default is text.
Only superusers can change this setting.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>
<varname>auto_explain.log_nested_statements</varname> (<type>boolean</type>)