database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-11-15 03:41:20 +03:00
Code Activity

Old planner() becomes union_planner(); new planner() makes initialization

Browse Source 
of some global variables to support subselects and calls union_planner().
Calls to SS_replace_correlation_vars() and SS_process_sublinks() in
query_planner() before planning.
Get rid of #ifdef INDEXSCAN_PATCH in createplan.c.
This commit is contained in:
Vadim B. Mikheev
1998-02-13 03:37:04 +00:00
parent a3f1c3673f
commit 4a6e3a6a9f
6 changed files with 625 additions and 20 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
src/backend/optimizer/plan/planmain.c
View File

@@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/optimizer/plan/planmain.c,v 1.18 1998/02/10 04:01:12 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/optimizer/plan/planmain.c,v 1.19 1998/02/13 03:36:57 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@@ -22,7 +22,9 @@
#include "nodes/makefuncs.h"
#include "optimizer/planmain.h"
#include "optimizer/subselect.h"
#include "optimizer/internal.h"
#include "optimizer/prep.h"
#include "optimizer/paths.h"
#include "optimizer/clauses.h"
#include "optimizer/keys.h"
@@ -72,7 +74,18 @@ query_planner(Query *root,
List *var_only_tlist = NIL;
List *level_tlist = NIL;
Plan *subplan = NULL;
if ( PlannerQueryLevel > 1 )
{
/* should copy be made ? */
tlist = (List *) SS_replace_correlation_vars ((Node*)tlist);
qual = (List *) SS_replace_correlation_vars ((Node*)qual);
}
if (root->hasSubLinks)
qual = (List *) SS_process_sublinks ((Node*) qual);
qual = cnfify((Expr *) qual, true);
/*
* A command without a target list or qualification is an error,
* except for "delete foo".
@@ -145,7 +158,7 @@ query_planner(Query *root,
if (constant_qual != NULL)
{
return ((Plan *) make_result(tlist,
(Node *) constant_qual,
(Node *) constant_qual,
(Plan *) scan));
}
else