1 files changed, 0 insertions, 65 deletions
diff --git a/src/backend/optimizer/util/clauses.c b/src/backend/optimizer/util/clauses.c
index 663fa7cd339..d7ff17c363d 100644
--- a/src/backend/optimizer/util/clauses.c
+++ b/src/backend/optimizer/util/clauses.c
@@ -2157,71 +2157,6 @@ CommuteOpExpr(OpExpr *clause)
 }
 
 /*
- * CommuteRowCompareExpr: commute a RowCompareExpr clause
- *
- * XXX the clause is destructively modified!
- */
-void
-CommuteRowCompareExpr(RowCompareExpr *clause)
-{
-	List	   *newops;
-	List	   *temp;
-	ListCell   *l;
-
-	/* Sanity checks: caller is at fault if these fail */
-	if (!IsA(clause, RowCompareExpr))
-		elog(ERROR, "expected a RowCompareExpr");
-
-	/* Build list of commuted operators */
-	newops = NIL;
-	foreach(l, clause->opnos)
-	{
-		Oid			opoid = lfirst_oid(l);
-
-		opoid = get_commutator(opoid);
-		if (!OidIsValid(opoid))
-			elog(ERROR, "could not find commutator for operator %u",
-				 lfirst_oid(l));
-		newops = lappend_oid(newops, opoid);
-	}
-
-	/*
-	 * modify the clause in-place!
-	 */
-	switch (clause->rctype)
-	{
-		case ROWCOMPARE_LT:
-			clause->rctype = ROWCOMPARE_GT;
-			break;
-		case ROWCOMPARE_LE:
-			clause->rctype = ROWCOMPARE_GE;
-			break;
-		case ROWCOMPARE_GE:
-			clause->rctype = ROWCOMPARE_LE;
-			break;
-		case ROWCOMPARE_GT:
-			clause->rctype = ROWCOMPARE_LT;
-			break;
-		default:
-			elog(ERROR, "unexpected RowCompare type: %d",
-				 (int) clause->rctype);
-			break;
-	}
-
-	clause->opnos = newops;
-
-	/*
-	 * Note: we need not change the opfamilies list; we assume any btree
-	 * opfamily containing an operator will also contain its commutator.
-	 * Collations don't change either.
-	 */
-
-	temp = clause->largs;
-	clause->largs = clause->rargs;
-	clause->rargs = temp;
-}
-
-/*
  * Helper for eval_const_expressions: check that datatype of an attribute
  * is still what it was when the expression was parsed.  This is needed to
  * guard against improper simplification after ALTER COLUMN TYPE.  (XXX we