diff options
Diffstat (limited to 'doc/src')
| -rw-r--r-- | doc/src/sgml/config.sgml | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml index 3839c72c868..bd138236acc 100644 --- a/doc/src/sgml/config.sgml +++ b/doc/src/sgml/config.sgml @@ -5306,6 +5306,22 @@ ANY <replaceable class="parameter">num_sync</replaceable> ( <replaceable class=" </listitem> </varlistentry> + <varlistentry id="guc-enable_self_join_removal" xreflabel="enable_self_join_removal"> + <term><varname>enable_self_join_removal</varname> (<type>boolean</type>) + <indexterm> + <primary><varname>enable_self_join_removal</varname> configuration parameter</primary> + </indexterm> + </term> + <listitem> + <para> + Enables or disables the query planner's optimization which analyses + the query tree and replaces self joins with semantically equivalent + single scans. Takes into consideration only plain tables. + The default is <literal>on</literal>. + </para> + </listitem> + </varlistentry> + <varlistentry id="guc-enable-seqscan" xreflabel="enable_seqscan"> <term><varname>enable_seqscan</varname> (<type>boolean</type>) <indexterm> |