1 files changed, 0 insertions, 41 deletions
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index 8232f45c587..20df2152eaa 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -33,7 +33,6 @@
 #include "parser/analyze.h"
 #include "rewrite/rewriteManip.h"
 #include "utils/lsyscache.h"
-#include "utils/typcache.h"
 
 /* These parameters are set by GUC */
 int			from_collapse_limit;
@@ -78,7 +77,6 @@ static bool check_equivalence_delay(PlannerInfo *root,
 static bool check_redundant_nullability_qual(PlannerInfo *root, Node *clause);
 static void check_mergejoinable(RestrictInfo *restrictinfo);
 static void check_hashjoinable(RestrictInfo *restrictinfo);
-static void check_resultcacheable(RestrictInfo *restrictinfo);
 
 
 /*****************************************************************************
@@ -2211,13 +2209,6 @@ distribute_restrictinfo_to_rels(PlannerInfo *root,
 			check_hashjoinable(restrictinfo);
 
 			/*
-			 * Likewise, check if the clause is suitable to be used with a
-			 * Result Cache node to cache inner tuples during a parameterized
-			 * nested loop.
-			 */
-			check_resultcacheable(restrictinfo);
-
-			/*
 			 * Add clause to the join lists of all the relevant relations.
 			 */
 			add_join_clause_to_rels(root, restrictinfo, relids);
@@ -2459,7 +2450,6 @@ build_implied_join_equality(PlannerInfo *root,
 	/* Set mergejoinability/hashjoinability flags */
 	check_mergejoinable(restrictinfo);
 	check_hashjoinable(restrictinfo);
-	check_resultcacheable(restrictinfo);
 
 	return restrictinfo;
 }
@@ -2707,34 +2697,3 @@ check_hashjoinable(RestrictInfo *restrictinfo)
 		!contain_volatile_functions((Node *) restrictinfo))
 		restrictinfo->hashjoinoperator = opno;
 }
-
-/*
- * check_resultcacheable
- *	  If the restrictinfo's clause is suitable to be used for a Result Cache
- *	  node, set the hasheqoperator to the hash equality operator that will be
- *	  needed during caching.
- */
-static void
-check_resultcacheable(RestrictInfo *restrictinfo)
-{
-	TypeCacheEntry *typentry;
-	Expr	   *clause = restrictinfo->clause;
-	Node	   *leftarg;
-
-	if (restrictinfo->pseudoconstant)
-		return;
-	if (!is_opclause(clause))
-		return;
-	if (list_length(((OpExpr *) clause)->args) != 2)
-		return;
-
-	leftarg = linitial(((OpExpr *) clause)->args);
-
-	typentry = lookup_type_cache(exprType(leftarg), TYPECACHE_HASH_PROC |
-													TYPECACHE_EQ_OPR);
-
-	if (!OidIsValid(typentry->hash_proc) || !OidIsValid(typentry->eq_opr))
-		return;
-
-	restrictinfo->hasheqoperator = typentry->eq_opr;
-}