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Diffstat (limited to 'src/backend/optimizer/plan/planmain.c')
-rw-r--r--src/backend/optimizer/plan/planmain.c138
1 files changed, 69 insertions, 69 deletions
diff --git a/src/backend/optimizer/plan/planmain.c b/src/backend/optimizer/plan/planmain.c
index 630ed12d2a1..029b34a24e7 100644
--- a/src/backend/optimizer/plan/planmain.c
+++ b/src/backend/optimizer/plan/planmain.c
@@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/optimizer/plan/planmain.c,v 1.5 1997/09/07 04:44:02 momjian Exp $
+ * $Header: /cvsroot/pgsql/src/backend/optimizer/plan/planmain.c,v 1.6 1997/09/08 02:24:37 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@@ -38,10 +38,10 @@
#include "utils/mcxt.h"
#include "utils/lsyscache.h"
-static Plan *subplanner(Query * root, List * flat_tlist, List * qual);
-static Result *make_result(List * tlist, Node * resconstantqual, Plan * subplan);
+static Plan *subplanner(Query * root, List * flat_tlist, List * qual);
+static Result *make_result(List * tlist, Node * resconstantqual, Plan * subplan);
-static Plan *
+static Plan *
make_groupPlan(List ** tlist, bool tuplePerGroup,
List * groupClause, Plan * subplan);
@@ -62,17 +62,17 @@ make_groupPlan(List ** tlist, bool tuplePerGroup,
*
* Returns a query plan.
*/
-Plan *
+Plan *
query_planner(Query * root,
int command_type,
List * tlist,
List * qual)
{
- List *constant_qual = NIL;
- List *flattened_tlist = NIL;
- List *level_tlist = NIL;
- Plan *subplan = (Plan *) NULL;
- Agg *aggplan = NULL;
+ List *constant_qual = NIL;
+ List *flattened_tlist = NIL;
+ List *level_tlist = NIL;
+ Plan *subplan = (Plan *) NULL;
+ Agg *aggplan = NULL;
/*
* A command without a target list or qualification is an error,
@@ -132,36 +132,36 @@ query_planner(Query * root,
switch (command_type)
{
- case CMD_SELECT:
- case CMD_INSERT:
- return ((Plan *) make_result(tlist,
- (Node *) constant_qual,
- (Plan *) NULL));
- break;
-
- case CMD_DELETE:
- case CMD_UPDATE:
- {
- SeqScan *scan = make_seqscan(tlist,
+ case CMD_SELECT:
+ case CMD_INSERT:
+ return ((Plan *) make_result(tlist,
+ (Node *) constant_qual,
+ (Plan *) NULL));
+ break;
+
+ case CMD_DELETE:
+ case CMD_UPDATE:
+ {
+ SeqScan *scan = make_seqscan(tlist,
(List *) NULL,
root->resultRelation,
(Plan *) NULL);
- if (constant_qual != NULL)
- {
- return ((Plan *) make_result(tlist,
- (Node *) constant_qual,
- (Plan *) scan));
+ if (constant_qual != NULL)
+ {
+ return ((Plan *) make_result(tlist,
+ (Node *) constant_qual,
+ (Plan *) scan));
+ }
+ else
+ {
+ return ((Plan *) scan);
+ }
}
- else
- {
- return ((Plan *) scan);
- }
- }
- break;
+ break;
- default:
- return ((Plan *) NULL);
+ default:
+ return ((Plan *) NULL);
}
}
@@ -180,7 +180,7 @@ query_planner(Query * root,
*/
if (root->groupClause != NULL)
{
- bool tuplePerGroup;
+ bool tuplePerGroup;
/*
* decide whether how many tuples per group the Group node needs
@@ -223,7 +223,7 @@ query_planner(Query * root,
*/
if (constant_qual)
{
- Plan *plan;
+ Plan *plan;
plan = (Plan *) make_result(tlist,
(Node *) constant_qual,
@@ -277,13 +277,13 @@ query_planner(Query * root,
* Returns a subplan.
*
*/
-static Plan *
+static Plan *
subplanner(Query * root,
List * flat_tlist,
List * qual)
{
- Rel *final_relation;
- List *final_relation_list;
+ Rel *final_relation;
+ List *final_relation_list;
/*
* Initialize the targetlist and qualification, adding entries to
@@ -323,7 +323,7 @@ subplanner(Query * root,
if (XfuncMode != XFUNC_OFF && XfuncMode != XFUNC_NOPM &&
XfuncMode != XFUNC_NOPULL && !final_relation->pruneable)
{
- List *pathnode;
+ List *pathnode;
foreach(pathnode, final_relation->pathlist)
{
@@ -353,13 +353,13 @@ subplanner(Query * root,
*
*****************************************************************************/
-static Result *
+static Result *
make_result(List * tlist,
Node * resconstantqual,
Plan * subplan)
{
- Result *node = makeNode(Result);
- Plan *plan = &node->plan;
+ Result *node = makeNode(Result);
+ Plan *plan = &node->plan;
tlist = generate_fjoin(tlist);
plan->cost = 0.0;
@@ -377,25 +377,25 @@ make_result(List * tlist,
*
*****************************************************************************/
-static Plan *
+static Plan *
make_groupPlan(List ** tlist,
bool tuplePerGroup,
List * groupClause,
Plan * subplan)
{
- List *sort_tlist;
- List *sl,
- *gl;
- List *glc = listCopy(groupClause);
- List *otles = NIL;/* list of removed non-GroupBy entries */
- List *otlvars = NIL; /* list of var in them */
- int otlvcnt;
- Sort *sortplan;
- Group *grpplan;
- int numCols;
- AttrNumber *grpColIdx;
- int keyno = 1;
- int last_resno = 1;
+ List *sort_tlist;
+ List *sl,
+ *gl;
+ List *glc = listCopy(groupClause);
+ List *otles = NIL; /* list of removed non-GroupBy entries */
+ List *otlvars = NIL; /* list of var in them */
+ int otlvcnt;
+ Sort *sortplan;
+ Group *grpplan;
+ int numCols;
+ AttrNumber *grpColIdx;
+ int keyno = 1;
+ int last_resno = 1;
numCols = length(groupClause);
grpColIdx = (AttrNumber *) palloc(sizeof(AttrNumber) * numCols);
@@ -412,12 +412,12 @@ make_groupPlan(List ** tlist,
*/
foreach(sl, sort_tlist)
{
- Resdom *resdom = NULL;
- TargetEntry *te = (TargetEntry *) lfirst(sl);
+ Resdom *resdom = NULL;
+ TargetEntry *te = (TargetEntry *) lfirst(sl);
foreach(gl, glc)
{
- GroupClause *grpcl = (GroupClause *) lfirst(gl);
+ GroupClause *grpcl = (GroupClause *) lfirst(gl);
if (grpcl->entry->resdom->resno == te->resdom->resno)
{
@@ -463,7 +463,7 @@ make_groupPlan(List ** tlist,
otlvcnt = length(otlvars);
foreach(gl, otlvars)
{
- Var *v = (Var *) lfirst(gl);
+ Var *v = (Var *) lfirst(gl);
if (tlist_member(v, sort_tlist) == NULL)
{
@@ -490,15 +490,15 @@ make_groupPlan(List ** tlist,
*/
foreach(sl, sort_tlist)
{
- TargetEntry *te = (TargetEntry *) lfirst(sl);
- Resdom *resdom = te->resdom;
- Node *expr = te->expr;
+ TargetEntry *te = (TargetEntry *) lfirst(sl);
+ Resdom *resdom = te->resdom;
+ Node *expr = te->expr;
if (IsA(expr, Var))
{
#if 0 /* subplanVar->resdom->resno expected to
* be = te->resdom->resno */
- TargetEntry *subplanVar;
+ TargetEntry *subplanVar;
subplanVar = match_varid((Var *) expr, subplan->targetlist);
((Var *) expr)->varattno = subplanVar->resdom->resno;
@@ -533,12 +533,12 @@ make_groupPlan(List ** tlist,
sort_tlist = NIL; /* to be new parent TL */
foreach(gl, *tlist)
{
- List *temp = NIL;
- TargetEntry *te = (TargetEntry *) lfirst(gl);
+ List *temp = NIL;
+ TargetEntry *te = (TargetEntry *) lfirst(gl);
foreach(temp, otles) /* Is it removed non-GroupBy entry ? */
{
- TargetEntry *ote = (TargetEntry *) lfirst(temp);
+ TargetEntry *ote = (TargetEntry *) lfirst(temp);
if (ote->resdom->resno == te->resdom->resno)
{
@@ -548,7 +548,7 @@ make_groupPlan(List ** tlist,
}
if (temp == NIL) /* It's "our" TLE - we're to return */
{ /* it from Sort/Group plans */
- TargetEntry *my = (TargetEntry *) lfirst(sl); /* get it */
+ TargetEntry *my = (TargetEntry *) lfirst(sl); /* get it */
sl = sl->next; /* prepare for the next "our" */
my = copyObject(my);
generated by cgit v1.2.3 (git 2.46.0) at 2025-09-25 16:59:10 +0000