From 480f1f4329f1bf8bfbbcda8ed233851e1b110ad4 Mon Sep 17 00:00:00 2001
From: Robert Haas
Date: Tue, 15 Aug 2017 10:49:06 -0400
Subject: Teach adjust_appendrel_attrs(_multilevel) to do multiple
 translations.

Currently, child relations are always base relations, so when we
translate parent relids to child relids, we only need to translate
a singler relid.  However, the proposed partition-wise join feature
will create child joins, which will mean we need to translate a set
of parent relids to the corresponding child relids.  This is
preliminary refactoring to make that possible.

Ashutosh Bapat.  Review and testing of the larger patch set of which
this is a part by Amit Langote, Rajkumar Raghuwanshi, Rafia Sabih,
Thomas Munro, Dilip Kumar, and me.  Some adjustments, mostly
cosmetic, by me.

Discussion: http://postgr.es/m/CA+TgmobQK80vtXjAsPZWWXd7c8u13G86gmuLupN+uUJjA+i4nA@mail.gmail.com
---
 src/include/optimizer/prep.h | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

(limited to 'src/include/optimizer')

diff --git a/src/include/optimizer/prep.h b/src/include/optimizer/prep.h
index faad46b5e4e..4be0afd5660 100644
--- a/src/include/optimizer/prep.h
+++ b/src/include/optimizer/prep.h
@@ -53,9 +53,13 @@ extern RelOptInfo *plan_set_operations(PlannerInfo *root);
 extern void expand_inherited_tables(PlannerInfo *root);
 
 extern Node *adjust_appendrel_attrs(PlannerInfo *root, Node *node,
-					   AppendRelInfo *appinfo);
+					   int nappinfos, AppendRelInfo **appinfos);
 
 extern Node *adjust_appendrel_attrs_multilevel(PlannerInfo *root, Node *node,
-								  RelOptInfo *child_rel);
+								  Relids child_relids,
+								  Relids top_parent_relids);
+
+extern AppendRelInfo **find_appinfos_by_relids(PlannerInfo *root,
+						Relids relids, int *nappinfos);
 
 #endif							/* PREP_H */
-- 
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