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Doc: Update FDW documentation about GetForeignUpperPaths().

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In commit d50d172e51, 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
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Etsuro Fujita
2019-05-09 19:50:15 +09:00
parent edbcbe277d
commit a0be05bab0
1 changed files with 3 additions and 1 deletions
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doc/src/sgml/fdwhandler.sgml
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@@ -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