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Enable GEQO for more than six tables, from Martin.

This commit is contained in:
Bruce Momjian 1997-06-01 02:56:00 +00:00
parent 4d9b4dc973
commit 8bc7439ccf
2 changed files with 5 additions and 3 deletions
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4
src/backend/optimizer/path/allpaths.c
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@ -7,7 +7,7 @@
* *
* *
* IDENTIFICATION * IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/optimizer/path/allpaths.c,v 1.6 1997/04/29 04:37:22 vadim Exp $ * $Header: /cvsroot/pgsql/src/backend/optimizer/path/allpaths.c,v 1.7 1997/06/01 02:55:44 momjian Exp $
* *
*------------------------------------------------------------------------- *-------------------------------------------------------------------------
*/ */
@ -173,7 +173,7 @@ find_join_paths(Query *root, List *outer_rels, int levels_left)
* <utesch@aut.tu-freiberg.de> * * <utesch@aut.tu-freiberg.de> *
*******************************************/ *******************************************/
if ( _use_geqo_ ) if ( (_use_geqo_) || length(root->base_relation_list_) >= GEQO_RELS )
return lcons(geqo(root), NIL); /* returns *one* Rel, so lcons it */ return lcons(geqo(root), NIL); /* returns *one* Rel, so lcons it */
/******************************************* /*******************************************

4
src/include/optimizer/geqo.h
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@ -5,7 +5,7 @@
* *
* Copyright (c) 1994, Regents of the University of California * Copyright (c) 1994, Regents of the University of California
* *
* $Id: geqo.h,v 1.1 1997/02/19 12:58:28 scrappy Exp $ * $Id: geqo.h,v 1.2 1997/06/01 02:56:00 momjian Exp $
* *
*------------------------------------------------------------------------- *-------------------------------------------------------------------------
*/ */
@ -38,6 +38,8 @@
*/ */
#define ERX #define ERX
/* GEQO switch according to number of relations in a query */
#define GEQO_RELS 7
/* genetic algorithm parameters */ /* genetic algorithm parameters */