commit d69aeabcfcb58f349602a1b7392c611045c37465
Author: amit <amitlangote09@gmail.com>
Date:   Tue Sep 27 20:01:44 2016 +0900

    Consider multi-level partitioned tables in create_lateral_join_info().

diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index 84ce6b3..74734f2 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -14,6 +14,7 @@
  */
 #include "postgres.h"
 
+#include "catalog/pg_class.h"
 #include "catalog/pg_type.h"
 #include "nodes/nodeFuncs.h"
 #include "optimizer/clauses.h"
@@ -623,8 +624,19 @@ create_lateral_join_info(PlannerInfo *root)
 	for (rti = 1; rti < root->simple_rel_array_size; rti++)
 	{
 		RelOptInfo *brel = root->simple_rel_array[rti];
+		RangeTblEntry *rte = root->simple_rte_array[rti];
 
-		if (brel == NULL || brel->reloptkind != RELOPT_BASEREL)
+		if (brel == NULL)
+			continue;
+
+		/*
+		 * If an "other rel" RTE is a "partitioned table", we must propagate
+		 * the lateral info inherited from the parent to its children. That's
+		 * because they are not linked directly with the parent via
+		 * AppendRelInfo's (see expand_inherited_rte_internal()).
+		 */
+		if (brel->reloptkind != RELOPT_BASEREL &&
+			rte->relkind != RELKIND_PARTITIONED_TABLE)
 			continue;
 
 		if (root->simple_rte_array[rti]->inh)