Avoid transaction overhead when there are no temp tables

to be deleted.

diff --git a/src/backend/utils/cache/temprel.c b/src/backend/utils/cache/temprel.c
index 13c78c6934e517011c8c21162b27715bf89acc62..75cfe14fbca3f1d9334513c19e1cf471d54fb10d 100644 (file)
--- a/src/backend/utils/cache/temprel.c
+++ b/src/backend/utils/cache/temprel.c
@@ -7,7 +7,7 @@
  *
  *
  * IDENTIFICATION
- *   $Header: /cvsroot/pgsql/src/backend/utils/cache/Attic/temprel.c,v 1.11 1999/09/04 19:55:50 momjian Exp $
+ *   $Header: /cvsroot/pgsql/src/backend/utils/cache/Attic/temprel.c,v 1.12 1999/09/04 21:45:48 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -79,6 +79,9 @@ remove_all_temp_relations(void)
    List       *l,
               *next;
 
+   if (temp_rels == NIL)
+       return;
+
    AbortOutOfAnyTransaction();
    StartTransactionCommand();
 
@@ -102,6 +105,7 @@ remove_all_temp_relations(void)
 
        l = next;
    }
+   temp_rels = NIL;
    CommitTransactionCommand();
 }