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

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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
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53
src/backend/optimizer/plan/planner.c
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@ -7,11 +7,12 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/optimizer/plan/planner.c,v 1.21 1998/01/15 18:59:48 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/optimizer/plan/planner.c,v 1.22 1998/02/13 03:36:59 vadim Exp $
*
*-------------------------------------------------------------------------
*/
#include <sys/types.h>
#include <string.h>
#include "postgres.h"
@ -30,6 +31,7 @@
#include "optimizer/plancat.h"
#include "optimizer/prep.h"
#include "optimizer/planmain.h"
#include "optimizer/subselect.h"
#include "optimizer/paths.h"
#include "optimizer/cost.h"
@ -56,10 +58,32 @@ extern Plan *make_groupPlan(List **tlist, bool tuplePerGroup,
*
*****************************************************************************/
Plan*
planner(Query *parse)
{
Plan *result_plan;
PlannerQueryLevel = 1;
PlannerVarParam = NULL;
PlannerParamVar = NULL;
PlannerInitPlan = NULL;
PlannerPlanId = 0;
result_plan = union_planner (parse);
Assert (PlannerQueryLevel == 1);
if ( PlannerPlanId > 0 )
{
result_plan->initPlan = PlannerInitPlan;
(void) SS_finalize_plan (result_plan);
}
result_plan->nParamExec = length (PlannerParamVar);
return (result_plan);
}
/*
* planner--
* Main query optimizer routine.
* union_planner--
*
* Invokes the planner on union queries if there are any left,
* recursing if necessary to get them all, then processes normal plans.
@ -68,14 +92,13 @@ extern Plan *make_groupPlan(List **tlist, bool tuplePerGroup,
*
*/
Plan *
planner(Query *parse)
union_planner(Query *parse)
{
List *tlist = parse->targetList;
List *rangetable = parse->rtable;
Plan *result_plan = (Plan *) NULL;
List *primary_qual;
Index rt_index;
@ -100,17 +123,25 @@ planner(Query *parse)
}
else
{
List **vpm = NULL;
tlist = preprocess_targetlist(tlist,
parse->commandType,
parse->resultRelation,
parse->rtable);
primary_qual = cnfify((Expr *) parse->qual, true);
if ( parse->rtable != NULL )
{
vpm = (List **) palloc (length (parse->rtable) * sizeof (List*));
memset (vpm, 0, length (parse->rtable) * sizeof (List*));
}
PlannerVarParam = lcons (vpm, PlannerVarParam);
result_plan = query_planner(parse,
parse->commandType,
tlist,
primary_qual);
parse->commandType,
tlist,
(List*) parse->qual);
PlannerVarParam = lnext (PlannerVarParam);
if ( vpm != NULL )
pfree (vpm);
}
/*