Small performance improvement in comparetup_heap.

diff --git a/src/backend/utils/sort/tuplesort.c b/src/backend/utils/sort/tuplesort.c
index be80b246a2b99949e0b8bcbdd2919437663bc6e3..7998372d4beebd064267a319d684f6d657284a90 100644 (file)
--- 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)