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Diffstat (limited to 'src/backend/parser/parse_relation.c')
-rw-r--r--src/backend/parser/parse_relation.c103
1 files changed, 48 insertions, 55 deletions
diff --git a/src/backend/parser/parse_relation.c b/src/backend/parser/parse_relation.c
index 76c79de6c6d..4bb65cf27e8 100644
--- a/src/backend/parser/parse_relation.c
+++ b/src/backend/parser/parse_relation.c
@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/parser/parse_relation.c,v 1.39 2000/03/23 07:38:30 tgl Exp $
+ * $Header: /cvsroot/pgsql/src/backend/parser/parse_relation.c,v 1.40 2000/04/12 17:15:27 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@@ -76,7 +76,7 @@ static char *attnum_type[SPECIALS] = {
* - thomas 2000-03-04
*/
List *
-refnameRangeTableEntries(ParseState *pstate, char *refname);
+ refnameRangeTableEntries(ParseState *pstate, char *refname);
List *
refnameRangeTableEntries(ParseState *pstate, char *refname)
@@ -119,7 +119,7 @@ refnameRangeTableEntry(ParseState *pstate, char *refname)
}
/* given refname, return RT index (starting with 1) of the relation,
- * and optionally get its nesting depth (0 = current). If sublevels_up
+ * and optionally get its nesting depth (0 = current). If sublevels_up
* is NULL, only consider rels at the current nesting level.
*/
int
@@ -179,8 +179,9 @@ colnameRangeTableEntry(ParseState *pstate, char *colname)
if (rte->eref->attrs != NULL)
{
- List *c;
- foreach (c, rte->ref->attrs)
+ List *c;
+
+ foreach(c, rte->ref->attrs)
{
if (strcmp(strVal(lfirst(c)), colname) == 0)
{
@@ -192,16 +193,14 @@ colnameRangeTableEntry(ParseState *pstate, char *colname)
}
}
- /* Even if we have an attribute list in the RTE,
- * look for the column here anyway. This is the only
- * way we will find implicit columns like "oid".
- * - thomas 2000-02-07
+ /*
+ * Even if we have an attribute list in the RTE, look for the
+ * column here anyway. This is the only way we will find
+ * implicit columns like "oid". - thomas 2000-02-07
*/
if ((rte_candidate == NULL)
&& (get_attnum(rte->relid, colname) != InvalidAttrNumber))
- {
rte_candidate = rte;
- }
if (rte_candidate == NULL)
continue;
@@ -236,18 +235,18 @@ addRangeTableEntry(ParseState *pstate,
bool inFromCl,
bool inJoinSet)
{
- Relation rel;
- RangeTblEntry *rte;
- Attr *eref;
- int maxattrs;
- int sublevels_up;
- int varattno;
+ Relation rel;
+ RangeTblEntry *rte;
+ Attr *eref;
+ int maxattrs;
+ int sublevels_up;
+ int varattno;
/* Look for an existing rte, if available... */
if (pstate != NULL)
{
- int rt_index = refnameRangeTablePosn(pstate, ref->relname,
- &sublevels_up);
+ int rt_index = refnameRangeTablePosn(pstate, ref->relname,
+ &sublevels_up);
if (rt_index != 0 && (!inFromCl || sublevels_up == 0))
{
@@ -262,12 +261,11 @@ addRangeTableEntry(ParseState *pstate,
rte->relname = relname;
rte->ref = ref;
- /* Get the rel's OID. This access also ensures that we have an
- * up-to-date relcache entry for the rel. We don't need to keep
- * it open, however.
- * Since this is open anyway, let's check that the number of column
- * aliases is reasonable.
- * - Thomas 2000-02-04
+ /*
+ * Get the rel's OID. This access also ensures that we have an
+ * up-to-date relcache entry for the rel. We don't need to keep it
+ * open, however. Since this is open anyway, let's check that the
+ * number of column aliases is reasonable. - Thomas 2000-02-04
*/
rel = heap_openr(relname, AccessShareLock);
rte->relid = RelationGetRelid(rel);
@@ -290,10 +288,9 @@ addRangeTableEntry(ParseState *pstate,
rte->eref = eref;
/*
- * Flags:
- * - this RTE should be expanded to include descendant tables,
- * - this RTE is in the FROM clause,
- * - this RTE should be included in the planner's final join.
+ * Flags: - this RTE should be expanded to include descendant tables,
+ * - this RTE is in the FROM clause, - this RTE should be included in
+ * the planner's final join.
*/
rte->inh = inh;
rte->inFromCl = inFromCl;
@@ -318,18 +315,16 @@ addRangeTableEntry(ParseState *pstate,
Attr *
expandTable(ParseState *pstate, char *refname, bool getaliases)
{
- Attr *attr;
- RangeTblEntry *rte;
- Relation rel;
+ Attr *attr;
+ RangeTblEntry *rte;
+ Relation rel;
int varattno,
maxattrs;
rte = refnameRangeTableEntry(pstate, refname);
if (getaliases && (rte != NULL))
- {
return rte->eref;
- }
if (rte != NULL)
rel = heap_open(rte->relid, AccessShareLock);
@@ -350,7 +345,7 @@ expandTable(ParseState *pstate, char *refname, bool getaliases)
#ifdef _DROP_COLUMN_HACK__
if (COLUMN_IS_DROPPED(rel->rd_att->attrs[varattno]))
continue;
-#endif /* _DROP_COLUMN_HACK__ */
+#endif /* _DROP_COLUMN_HACK__ */
attrname = pstrdup(NameStr(rel->rd_att->attrs[varattno]->attname));
attr->attrs = lappend(attr->attrs, makeString(attrname));
}
@@ -367,11 +362,11 @@ expandTable(ParseState *pstate, char *refname, bool getaliases)
List *
expandAll(ParseState *pstate, char *relname, Attr *ref, int *this_resno)
{
- List *te_list = NIL;
- RangeTblEntry *rte;
- Relation rel;
- int varattno,
- maxattrs;
+ List *te_list = NIL;
+ RangeTblEntry *rte;
+ Relation rel;
+ int varattno,
+ maxattrs;
rte = refnameRangeTableEntry(pstate, ref->relname);
if (rte == NULL)
@@ -379,9 +374,9 @@ expandAll(ParseState *pstate, char *relname, Attr *ref, int *this_resno)
rte = addRangeTableEntry(pstate, relname, ref,
FALSE, FALSE, TRUE);
#ifdef WARN_FROM
- elog(NOTICE,"Adding missing FROM-clause entry%s for table %s",
- pstate->parentParseState != NULL ? " in subquery" : "",
- refname);
+ elog(NOTICE, "Adding missing FROM-clause entry%s for table %s",
+ pstate->parentParseState != NULL ? " in subquery" : "",
+ refname);
#endif
}
@@ -391,18 +386,21 @@ expandAll(ParseState *pstate, char *relname, Attr *ref, int *this_resno)
for (varattno = 0; varattno < maxattrs; varattno++)
{
- char *attrname;
- char *label;
- Var *varnode;
- TargetEntry *te = makeNode(TargetEntry);
+ char *attrname;
+ char *label;
+ Var *varnode;
+ TargetEntry *te = makeNode(TargetEntry);
#ifdef _DROP_COLUMN_HACK__
if (COLUMN_IS_DROPPED(rel->rd_att->attrs[varattno]))
continue;
-#endif /* _DROP_COLUMN_HACK__ */
+#endif /* _DROP_COLUMN_HACK__ */
attrname = pstrdup(NameStr(rel->rd_att->attrs[varattno]->attname));
- /* varattno is zero-based, so check that length() is always greater */
+ /*
+ * varattno is zero-based, so check that length() is always
+ * greater
+ */
if (length(rte->eref->attrs) > varattno)
label = pstrdup(strVal(nth(varattno, rte->eref->attrs)));
else
@@ -452,7 +450,7 @@ attnameAttNum(Relation rd, char *a)
/* on failure */
elog(ERROR, "Relation '%s' does not have attribute '%s'",
RelationGetRelationName(rd), a);
- return InvalidAttrNumber; /* lint */
+ return InvalidAttrNumber; /* lint */
}
/* specialAttNum()
@@ -528,8 +526,3 @@ attnumTypeId(Relation rd, int attid)
*/
return rd->rd_att->attrs[attid - 1]->atttypid;
}
-
-
-
-
-
generated by cgit v1.2.3 (git 2.25.1) at 2025-05-20 02:03:04 +0000