Doc: Update FDW documentation about GetForeignUpperPaths().

Etsuro Fujita · Etsuro Fujita · commit a0be05bab062 · 2019-05-09T19:50:15.000+09:00
In commit d50d172, which added support for LIMIT/OFFSET pushdown in postgres_fdw, a new struct was introduced as the extra parameter of GetForeignUpperPaths() set for UPPERREL_FINAL, but I forgot to update the documentation to mention that. Author: Etsuro Fujita Discussion: https://postgr.es/m/CAPmGK17uSXQDe31oRb-z1nYyT6vVzkstZkA3_Wbq38U92b9BmQ%40mail.gmail.com
diff --git a/doc/src/sgml/fdwhandler.sgml b/doc/src/sgml/fdwhandler.sgml
@@ -387,7 +387,9 @@ GetForeignUpperPaths(PlannerInfo *root,
      step.  The <literal>extra</literal> parameter provides additional details,
      currently, it is set only for <literal>UPPERREL_PARTIAL_GROUP_AGG</literal>
      or <literal>UPPERREL_GROUP_AGG</literal>, in which case it points to a
-     <literal>GroupPathExtraData</literal> structure.
+     <literal>GroupPathExtraData</literal> structure;
+     or for <literal>UPPERREL_FINAL</literal>, in which case it points to a
+     <literal>FinalPathExtraData</literal> structure.
      (Note that <structname>ForeignPath</structname> paths added
      to <literal>output_rel</literal> would typically not have any direct dependency
      on paths of the <literal>input_rel</literal>, since their processing is expected
