From 73dd71628562e6075e9601e4860429aa41e2c0dc Mon Sep 17 00:00:00 2001
From: Tom Lane <tgl@sss.pgh.pa.us>
Date: Wed, 1 Mar 2000 17:14:09 +0000
Subject: [PATCH] Small performance improvement in comparetup_heap.

---
 src/backend/utils/sort/tuplesort.c | 14 +++++---------
 1 file changed, 5 insertions(+), 9 deletions(-)

diff --git a/src/backend/utils/sort/tuplesort.c b/src/backend/utils/sort/tuplesort.c
index be80b246a2..7998372d4b 100644
--- a/src/backend/utils/sort/tuplesort.c
+++ b/src/backend/utils/sort/tuplesort.c
@@ -78,7 +78,7 @@
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/utils/sort/tuplesort.c,v 1.6 2000/02/18 06:32:30 tgl Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/utils/sort/tuplesort.c,v 1.7 2000/03/01 17:14:09 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -1632,20 +1632,16 @@ comparetup_heap(Tuplesortstate *state, const void *a, const void *b)
 	for (nkey = 0; nkey < state->nKeys; nkey++)
 	{
 		ScanKey		scanKey = state->scanKeys + nkey;
+		AttrNumber	attno = scanKey->sk_attno;
 		Datum		lattr,
 					rattr;
 		bool		isnull1,
 					isnull2;
 		int			result;
 
-		lattr = heap_getattr(ltup,
-							 scanKey->sk_attno,
-							 tupDesc,
-							 &isnull1);
-		rattr = heap_getattr(rtup,
-							 scanKey->sk_attno,
-							 tupDesc,
-							 &isnull2);
+		lattr = heap_getattr(ltup, attno, tupDesc, &isnull1);
+		rattr = heap_getattr(rtup, attno, tupDesc, &isnull2);
+
 		if (isnull1)
 		{
 			if (!isnull2)