From 05404562fb2b850e4202de9b3fe769c17fa43903 Mon Sep 17 00:00:00 2001
From: "Vadim B. Mikheev" <vadim4o@yahoo.com>
Date: Mon, 2 Jun 1997 11:14:40 +0000
Subject: [PATCH] Use GEQO if _use_geqo_ is TRUE and # of relations is >=
_use_geqo_rels_ (both are settable via SET geqo TO ...).
---
src/backend/optimizer/path/allpaths.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index ac1f2b414d9..6469e7ecb68 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/optimizer/path/allpaths.c,v 1.7 1997/06/01 02:55:44 momjian Exp $
+ * $Header: /cvsroot/pgsql/src/backend/optimizer/path/allpaths.c,v 1.8 1997/06/02 11:14:40 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@@ -38,6 +38,7 @@ bool _use_geqo_ = true;
#else
bool _use_geqo_ = false;
#endif
+int32 _use_geqo_rels_ = GEQO_RELS;
static void find_rel_paths(Query *root, List *rels);
@@ -173,7 +174,7 @@ find_join_paths(Query *root, List *outer_rels, int levels_left)
* <utesch@aut.tu-freiberg.de> *
*******************************************/
- if ( (_use_geqo_) || length(root->base_relation_list_) >= GEQO_RELS )
+ if ( (_use_geqo_) && length(root->base_relation_list_) >= _use_geqo_rels_ )
return lcons(geqo(root), NIL); /* returns *one* Rel, so lcons it */
/*******************************************
--
GitLab