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Diffstat (limited to 'src/backend/optimizer/prep/prepunion.c')
-rw-r--r--src/backend/optimizer/prep/prepunion.c232
1 files changed, 116 insertions, 116 deletions
diff --git a/src/backend/optimizer/prep/prepunion.c b/src/backend/optimizer/prep/prepunion.c
index 9bf282f8cc3..39e539b223b 100644
--- a/src/backend/optimizer/prep/prepunion.c
+++ b/src/backend/optimizer/prep/prepunion.c
@@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/optimizer/prep/prepunion.c,v 1.4 1997/09/07 04:44:14 momjian Exp $
+ * $Header: /cvsroot/pgsql/src/backend/optimizer/prep/prepunion.c,v 1.5 1997/09/08 02:24:47 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@@ -34,20 +34,20 @@
#include "optimizer/planner.h"
#include "optimizer/prep.h"
-static List *
+static List *
plan_union_query(List * relids, Index rt_index,
RangeTblEntry * rt_entry, Query * parse, UnionFlag flag,
List ** union_rtentriesPtr);
static RangeTblEntry *
new_rangetable_entry(Oid new_relid,
RangeTblEntry * old_entry);
-static Query *
+static Query *
subst_rangetable(Query * root, Index index,
RangeTblEntry * new_entry);
static void
fix_parsetree_attnums(Index rt_index, Oid old_relid,
Oid new_relid, Query * parsetree);
-static Append *
+static Append *
make_append(List * unionplans, Index rt_index,
List * union_rt_entries, List * tlist);
@@ -58,20 +58,20 @@ make_append(List * unionplans, Index rt_index,
* attributes from any relations listed in either of the argument relid
* lists.
*/
-List *
+List *
find_all_inheritors(List * unexamined_relids,
List * examined_relids)
{
- List *new_inheritors = NIL;
- List *new_examined_relids = NIL;
- List *new_unexamined_relids = NIL;
+ List *new_inheritors = NIL;
+ List *new_examined_relids = NIL;
+ List *new_unexamined_relids = NIL;
/*
* Find all relations which inherit from members of
* 'unexamined-relids' and store them in 'new-inheritors'.
*/
- List *rels = NIL;
- List *newrels = NIL;
+ List *rels = NIL;
+ List *newrels = NIL;
foreach(rels, unexamined_relids)
{
@@ -105,25 +105,25 @@ find_all_inheritors(List * unexamined_relids,
int
first_matching_rt_entry(List * rangetable, UnionFlag flag)
{
- int count = 0;
- List *temp = NIL;
+ int count = 0;
+ List *temp = NIL;
foreach(temp, rangetable)
{
- RangeTblEntry *rt_entry = lfirst(temp);
+ RangeTblEntry *rt_entry = lfirst(temp);
switch (flag)
{
- case INHERITS_FLAG:
- if (rt_entry->inh)
- return count + 1;
- break;
- case ARCHIVE_FLAG:
- if (rt_entry->archive)
- return count + 1;
- break;
- default:
- break;
+ case INHERITS_FLAG:
+ if (rt_entry->inh)
+ return count + 1;
+ break;
+ case ARCHIVE_FLAG:
+ if (rt_entry->archive)
+ return count + 1;
+ break;
+ default:
+ break;
}
count++;
}
@@ -141,50 +141,50 @@ first_matching_rt_entry(List * rangetable, UnionFlag flag)
* entries to be inserted into an APPEND node.
* XXX - what exactly does this mean, look for make_append
*/
-Append *
+Append *
plan_union_queries(Index rt_index,
Query * parse,
UnionFlag flag)
{
- List *rangetable = parse->rtable;
- RangeTblEntry *rt_entry = rt_fetch(rt_index, rangetable);
- List *union_relids = NIL;
- List *union_plans = NIL;
- List *union_rt_entries = NIL;
+ List *rangetable = parse->rtable;
+ RangeTblEntry *rt_entry = rt_fetch(rt_index, rangetable);
+ List *union_relids = NIL;
+ List *union_plans = NIL;
+ List *union_rt_entries = NIL;
switch (flag)
{
- case INHERITS_FLAG:
- union_relids =
- find_all_inheritors(lconsi(rt_entry->relid,
- NIL),
- NIL);
- break;
+ case INHERITS_FLAG:
+ union_relids =
+ find_all_inheritors(lconsi(rt_entry->relid,
+ NIL),
+ NIL);
+ break;
#if 0
- case UNION_FLAG:
- {
- Index rt_index = 0;
+ case UNION_FLAG:
+ {
+ Index rt_index = 0;
- union_plans = handleunion(root, rangetable, tlist, qual);
- return (make_append(union_plans,
- rt_index, rangetable,
+ union_plans = handleunion(root, rangetable, tlist, qual);
+ return (make_append(union_plans,
+ rt_index, rangetable,
((Plan *) lfirst(union_plans))->targetlist));
- }
- break;
+ }
+ break;
#endif
- case VERSION_FLAG:
- union_relids = VersionGetParents(rt_entry->relid);
- break;
+ case VERSION_FLAG:
+ union_relids = VersionGetParents(rt_entry->relid);
+ break;
- case ARCHIVE_FLAG:
- union_relids = find_archive_rels(rt_entry->relid);
- break;
+ case ARCHIVE_FLAG:
+ union_relids = find_archive_rels(rt_entry->relid);
+ break;
- default:
- /* do nothing */
- break;
+ default:
+ /* do nothing */
+ break;
}
/*
@@ -193,14 +193,14 @@ plan_union_queries(Index rt_index,
*/
switch (flag)
{
- case INHERITS_FLAG:
- rt_fetch(rt_index, rangetable)->inh = false;
- break;
- case ARCHIVE_FLAG:
- rt_fetch(rt_index, rangetable)->archive = false;
- break;
- default:
- break;
+ case INHERITS_FLAG:
+ rt_fetch(rt_index, rangetable)->inh = false;
+ break;
+ case ARCHIVE_FLAG:
+ rt_fetch(rt_index, rangetable)->archive = false;
+ break;
+ default:
+ break;
}
/*
@@ -225,7 +225,7 @@ plan_union_queries(Index rt_index,
* Returns a list of plans for 'relids' and a list of range table entries
* in union_rtentries.
*/
-static List *
+static List *
plan_union_query(List * relids,
Index rt_index,
RangeTblEntry * rt_entry,
@@ -233,18 +233,18 @@ plan_union_query(List * relids,
UnionFlag flag,
List ** union_rtentriesPtr)
{
- List *i;
- List *union_plans = NIL;
- List *union_rtentries = NIL;
+ List *i;
+ List *union_plans = NIL;
+ List *union_rtentries = NIL;
foreach(i, relids)
{
- int relid = lfirsti(i);
- RangeTblEntry *new_rt_entry = new_rangetable_entry(relid,
- rt_entry);
- Query *new_root = subst_rangetable(root,
- rt_index,
- new_rt_entry);
+ int relid = lfirsti(i);
+ RangeTblEntry *new_rt_entry = new_rangetable_entry(relid,
+ rt_entry);
+ Query *new_root = subst_rangetable(root,
+ rt_index,
+ new_rt_entry);
/*
* reset the uniqueflag and sortclause in parse tree root, so that
@@ -288,7 +288,7 @@ plan_union_query(List * relids,
static RangeTblEntry *
new_rangetable_entry(Oid new_relid, RangeTblEntry * old_entry)
{
- RangeTblEntry *new_entry = copyObject(old_entry);
+ RangeTblEntry *new_entry = copyObject(old_entry);
/* ??? someone tell me what the following is doing! - ay 11/94 */
if (!strcmp(new_entry->refname, "*CURRENT*") ||
@@ -307,12 +307,12 @@ new_rangetable_entry(Oid new_relid, RangeTblEntry * old_entry)
*
* Returns a new copy of 'root'.
*/
-static Query *
+static Query *
subst_rangetable(Query * root, Index index, RangeTblEntry * new_entry)
{
- Query *new_root = copyObject(root);
- List *temp = NIL;
- int i = 0;
+ Query *new_root = copyObject(root);
+ List *temp = NIL;
+ int i = 0;
for (temp = new_root->rtable, i = 1; i < index; temp = lnext(temp), i++)
;
@@ -332,54 +332,54 @@ fix_parsetree_attnums_nodes(Index rt_index,
switch (nodeTag(node))
{
- case T_TargetEntry:
- {
- TargetEntry *tle = (TargetEntry *) node;
+ case T_TargetEntry:
+ {
+ TargetEntry *tle = (TargetEntry *) node;
- fix_parsetree_attnums_nodes(rt_index, old_relid, new_relid,
- tle->expr);
- }
- break;
- case T_Expr:
- {
- Expr *expr = (Expr *) node;
+ fix_parsetree_attnums_nodes(rt_index, old_relid, new_relid,
+ tle->expr);
+ }
+ break;
+ case T_Expr:
+ {
+ Expr *expr = (Expr *) node;
- fix_parsetree_attnums_nodes(rt_index, old_relid, new_relid,
- (Node *) expr->args);
- }
- break;
- case T_Var:
- {
- Var *var = (Var *) node;
- Oid old_typeid,
+ fix_parsetree_attnums_nodes(rt_index, old_relid, new_relid,
+ (Node *) expr->args);
+ }
+ break;
+ case T_Var:
+ {
+ Var *var = (Var *) node;
+ Oid old_typeid,
new_typeid;
/* old_typeid = RelationIdGetTypeId(old_relid);*/
/* new_typeid = RelationIdGetTypeId(new_relid);*/
- old_typeid = old_relid;
- new_typeid = new_relid;
-
- if (var->varno == rt_index && var->varattno != 0)
- {
- var->varattno =
- get_attnum(new_typeid,
- get_attname(old_typeid, var->varattno));
+ old_typeid = old_relid;
+ new_typeid = new_relid;
+
+ if (var->varno == rt_index && var->varattno != 0)
+ {
+ var->varattno =
+ get_attnum(new_typeid,
+ get_attname(old_typeid, var->varattno));
+ }
}
- }
- break;
- case T_List:
- {
- List *l;
-
- foreach(l, (List *) node)
+ break;
+ case T_List:
{
- fix_parsetree_attnums_nodes(rt_index, old_relid, new_relid,
- (Node *) lfirst(l));
+ List *l;
+
+ foreach(l, (List *) node)
+ {
+ fix_parsetree_attnums_nodes(rt_index, old_relid, new_relid,
+ (Node *) lfirst(l));
+ }
}
- }
- break;
- default:
- break;
+ break;
+ default:
+ break;
}
}
@@ -407,13 +407,13 @@ fix_parsetree_attnums(Index rt_index,
parsetree->qual);
}
-static Append *
+static Append *
make_append(List * unionplans,
Index rt_index,
List * union_rt_entries,
List * tlist)
{
- Append *node = makeNode(Append);
+ Append *node = makeNode(Append);
node->unionplans = unionplans;
node->unionrelid = rt_index;
generated by cgit v1.2.3 (git 2.46.0) at 2025-09-25 22:26:09 +0000