1 files changed, 0 insertions, 75 deletions

diff --git a/src/backend/utils/cache/relcache.c b/src/backend/utils/cache/relcache.c
index 79cc3df590a..1b7b99548c5 100644
--- a/src/backend/utils/cache/relcache.c
+++ b/src/backend/utils/cache/relcache.c
@@ -2031,7 +2031,6 @@ RelationDestroyRelation(Relation relation, bool remember_tupdesc)
 			FreeTupleDesc(relation->rd_att);
 	}
 	list_free(relation->rd_indexlist);
-	list_free(relation->rd_fkeylist);
 	bms_free(relation->rd_indexattr);
 	bms_free(relation->rd_keyattr);
 	bms_free(relation->rd_idattr);
@@ -3958,79 +3957,6 @@ RelationGetIndexList(Relation relation)
 }
 
 /*
- * RelationGetFKeyList -- get a list of foreign key oids
- *
- * Use an index scan on pg_constraint to load in FK definitions,
- * intended for use within the planner, not for enforcing FKs.
- *
- * Data is ordered by Oid, though this is not critical at this point
- * since we do not lock the referenced relations.
- */
-List *
-RelationGetFKeyList(Relation relation)
-{
-	Relation	conrel;
-	SysScanDesc conscan;
-	ScanKeyData skey;
-	HeapTuple	htup;
-	List	   *result;
-	List	   *oldlist;
-	MemoryContext oldcxt;
-
-	/* Quick exit if we already computed the list. */
-	if (relation->rd_fkeylist)
-		return list_copy(relation->rd_fkeylist);
-
-	/* Fast path if no FKs... if it doesn't have a trigger, it can't have a FK */
-	if (!relation->rd_rel->relhastriggers)
-		return NIL;
-	/*
-	 * We build the list we intend to return (in the caller's context) while
-	 * doing the scan.  After successfully completing the scan, we copy that
-	 * list into the relcache entry.  This avoids cache-context memory leakage
-	 * if we get some sort of error partway through.
-	 */
-	result = NIL;
-
-	/* Prepare to scan pg_constraint for entries having conrelid = this rel. */
-	ScanKeyInit(&skey,
-				Anum_pg_constraint_conrelid,
-				BTEqualStrategyNumber, F_OIDEQ,
-				ObjectIdGetDatum(RelationGetRelid(relation)));
-
-	conrel = heap_open(ConstraintRelationId, AccessShareLock);
-	conscan = systable_beginscan(conrel, ConstraintRelidIndexId, true,
-								 NULL, 1, &skey);
-
-	while (HeapTupleIsValid(htup = systable_getnext(conscan)))
-	{
-		Form_pg_constraint constraint = (Form_pg_constraint) GETSTRUCT(htup);
-
-		/* return only foreign keys */
-		if (constraint->contype != CONSTRAINT_FOREIGN)
-			continue;
-
-		/* Add FK's OID to result list in the proper order */
-		result = insert_ordered_oid(result, HeapTupleGetOid(htup));
-	}
-
-	systable_endscan(conscan);
-
-	heap_close(conrel, AccessShareLock);
-
-	/* Now save a copy of the completed list in the relcache entry. */
-	oldcxt = MemoryContextSwitchTo(CacheMemoryContext);
-	oldlist = relation->rd_fkeylist;
-	relation->rd_fkeylist = list_copy(result);
-	MemoryContextSwitchTo(oldcxt);
-
-	/* Don't leak the old list, if there is one */
-	list_free(oldlist);
-
-	return result;
-}
-
-/*
  * insert_ordered_oid
  *		Insert a new Oid into a sorted list of Oids, preserving ordering
  *
@@ -4994,7 +4920,6 @@ load_relcache_init_file(bool shared)
 		rel->rd_indexattr = NULL;
 		rel->rd_keyattr = NULL;
 		rel->rd_idattr = NULL;
-		rel->rd_fkeylist = NIL;
 		rel->rd_createSubid = InvalidSubTransactionId;
 		rel->rd_newRelfilenodeSubid = InvalidSubTransactionId;
 		rel->rd_amcache = NULL;