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Diffstat (limited to 'src/backend/parser/parse_relation.c')
-rw-r--r--src/backend/parser/parse_relation.c82
1 files changed, 44 insertions, 38 deletions
diff --git a/src/backend/parser/parse_relation.c b/src/backend/parser/parse_relation.c
index d9280529c4f..59be1044748 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 1.52 2001/02/14 21:35:04 tgl Exp $
+ * $Header: /cvsroot/pgsql/src/backend/parser/parse_relation.c,v 1.53 2001/03/22 03:59:41 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@@ -31,11 +31,11 @@
static Node *scanNameSpaceForRefname(ParseState *pstate, Node *nsnode,
- char *refname);
+ char *refname);
static Node *scanRTEForColumn(ParseState *pstate, RangeTblEntry *rte,
- char *colname);
+ char *colname);
static Node *scanJoinForColumn(JoinExpr *join, char *colname,
- int sublevels_up);
+ int sublevels_up);
static bool isForUpdate(ParseState *pstate, char *relname);
static List *expandNamesVars(ParseState *pstate, List *names, List *vars);
static void warnAutoRange(ParseState *pstate, char *refname);
@@ -145,7 +145,8 @@ scanNameSpaceForRefname(ParseState *pstate, Node *nsnode,
if (j->alias)
{
if (strcmp(j->alias->relname, refname) == 0)
- return (Node *) j; /* matched a join alias */
+ return (Node *) j; /* matched a join alias */
+
/*
* Tables within an aliased join are invisible from outside
* the join, according to the scope rules of SQL92 (the join
@@ -154,7 +155,7 @@ scanNameSpaceForRefname(ParseState *pstate, Node *nsnode,
return NULL;
}
result = scanNameSpaceForRefname(pstate, j->larg, refname);
- if (! result)
+ if (!result)
result = scanNameSpaceForRefname(pstate, j->rarg, refname);
}
else if (IsA(nsnode, List))
@@ -185,7 +186,7 @@ scanNameSpaceForConflict(ParseState *pstate, Node *nsnode,
/*
* Recursively check for refname conflicts between two namespaces or
- * namespace subtrees. Raise an error if any is found.
+ * namespace subtrees. Raise an error if any is found.
*
* Works by recursively scanning namespace1 in the same way that
* scanNameSpaceForRefname does, and then looking in namespace2 for
@@ -214,6 +215,7 @@ checkNameSpaceConflicts(ParseState *pstate, Node *namespace1,
if (j->alias)
{
scanNameSpaceForConflict(pstate, namespace2, j->alias->relname);
+
/*
* Tables within an aliased join are invisible from outside
* the join, according to the scope rules of SQL92 (the join
@@ -229,9 +231,7 @@ checkNameSpaceConflicts(ParseState *pstate, Node *namespace1,
List *l;
foreach(l, (List *) namespace1)
- {
checkNameSpaceConflicts(pstate, lfirst(l), namespace2);
- }
}
else
elog(ERROR, "checkNameSpaceConflicts: unexpected node type %d",
@@ -290,8 +290,8 @@ scanRTEForColumn(ParseState *pstate, RangeTblEntry *rte, char *colname)
List *c;
/*
- * Scan the user column names (or aliases) for a match.
- * Complain if multiple matches.
+ * Scan the user column names (or aliases) for a match. Complain if
+ * multiple matches.
*/
foreach(c, rte->eref->attrs)
{
@@ -354,7 +354,8 @@ scanJoinForColumn(JoinExpr *join, char *colname, int sublevels_up)
{
if (result)
elog(ERROR, "Column reference \"%s\" is ambiguous", colname);
- result = copyObject(nth(attnum-1, join->colvars));
+ result = copyObject(nth(attnum - 1, join->colvars));
+
/*
* If referencing an uplevel join item, we must adjust
* sublevels settings in the copied expression.
@@ -385,20 +386,20 @@ colnameToVar(ParseState *pstate, char *colname)
/*
* We need to look only at top-level namespace items, and even for
- * those, ignore RTEs that are marked as not inFromCl and not
- * the query's target relation.
+ * those, ignore RTEs that are marked as not inFromCl and not the
+ * query's target relation.
*/
foreach(ns, pstate->p_namespace)
{
- Node *nsnode = (Node *) lfirst(ns);
- Node *newresult = NULL;
+ Node *nsnode = (Node *) lfirst(ns);
+ Node *newresult = NULL;
if (IsA(nsnode, RangeTblRef))
{
int varno = ((RangeTblRef *) nsnode)->rtindex;
RangeTblEntry *rte = rt_fetch(varno, pstate->p_rtable);
- if (! rte->inFromCl &&
+ if (!rte->inFromCl &&
rte != pstate->p_target_rangetblentry)
continue;
@@ -452,7 +453,7 @@ qualifiedNameToVar(ParseState *pstate, char *refname, char *colname,
if (rteorjoin == NULL)
{
- if (! implicitRTEOK)
+ if (!implicitRTEOK)
return NULL;
rteorjoin = (Node *) addImplicitRTE(pstate, refname);
sublevels_up = 0;
@@ -505,9 +506,9 @@ addRangeTableEntry(ParseState *pstate,
/*
* Get the rel's OID. This access also ensures that we have an
- * up-to-date relcache entry for the rel. Since this is typically
- * the first access to a rel in a statement, be careful to get the
- * right access level depending on whether we're doing SELECT FOR UPDATE.
+ * up-to-date relcache entry for the rel. Since this is typically the
+ * first access to a rel in a statement, be careful to get the right
+ * access level depending on whether we're doing SELECT FOR UPDATE.
*/
lockmode = isForUpdate(pstate, relname) ? RowShareLock : AccessShareLock;
rel = heap_openr(relname, lockmode);
@@ -517,8 +518,8 @@ addRangeTableEntry(ParseState *pstate,
numaliases = length(eref->attrs);
/*
- * Since the rel is open anyway, let's check that the
- * number of column aliases is reasonable. - Thomas 2000-02-04
+ * Since the rel is open anyway, let's check that the number of column
+ * aliases is reasonable. - Thomas 2000-02-04
*/
maxattrs = RelationGetNumberOfAttributes(rel);
if (maxattrs < numaliases)
@@ -536,9 +537,9 @@ addRangeTableEntry(ParseState *pstate,
rte->eref = eref;
/*
- * Drop the rel refcount, but keep the access lock till end of transaction
- * so that the table can't be deleted or have its schema modified
- * underneath us.
+ * Drop the rel refcount, but keep the access lock till end of
+ * transaction so that the table can't be deleted or have its schema
+ * modified underneath us.
*/
heap_close(rel, NoLock);
@@ -557,11 +558,11 @@ addRangeTableEntry(ParseState *pstate,
rte->checkForRead = true;
rte->checkForWrite = false;
- rte->checkAsUser = InvalidOid; /* not set-uid by default, either */
+ rte->checkAsUser = InvalidOid; /* not set-uid by default, either */
/*
- * Add completed RTE to pstate's range table list, but not to join list
- * nor namespace --- caller must do that if appropriate.
+ * Add completed RTE to pstate's range table list, but not to join
+ * list nor namespace --- caller must do that if appropriate.
*/
if (pstate != NULL)
pstate->p_rtable = lappend(pstate->p_rtable, rte);
@@ -637,8 +638,8 @@ addRangeTableEntryForSubquery(ParseState *pstate,
rte->checkAsUser = InvalidOid;
/*
- * Add completed RTE to pstate's range table list, but not to join list
- * nor namespace --- caller must do that if appropriate.
+ * Add completed RTE to pstate's range table list, but not to join
+ * list nor namespace --- caller must do that if appropriate.
*/
if (pstate != NULL)
pstate->p_rtable = lappend(pstate->p_rtable, rte);
@@ -665,7 +666,7 @@ isForUpdate(ParseState *pstate, char *relname)
else
{
/* just the named tables */
- List *l;
+ List *l;
foreach(l, pstate->p_forUpdate)
{
@@ -683,7 +684,7 @@ isForUpdate(ParseState *pstate, char *relname)
/*
* Add the given RTE as a top-level entry in the pstate's join list
- * and/or name space list. (We assume caller has checked for any
+ * and/or name space list. (We assume caller has checked for any
* namespace conflict.)
*/
void
@@ -854,9 +855,10 @@ expandJoinAttrs(ParseState *pstate, JoinExpr *join, int sublevels_up)
List *vars;
vars = copyObject(join->colvars);
+
/*
- * If referencing an uplevel join item, we must adjust
- * sublevels settings in the copied expression.
+ * If referencing an uplevel join item, we must adjust sublevels
+ * settings in the copied expression.
*/
if (sublevels_up > 0)
IncrementVarSublevelsUp((Node *) vars, sublevels_up, 0);
@@ -922,15 +924,17 @@ get_rte_attribute_name(RangeTblEntry *rte, AttrNumber attnum)
* If there is an alias, use it
*/
if (attnum > 0 && attnum <= length(rte->eref->attrs))
- return strVal(nth(attnum-1, rte->eref->attrs));
+ return strVal(nth(attnum - 1, rte->eref->attrs));
+
/*
- * Can get here for a system attribute (which never has an alias),
- * or if alias name list is too short (which probably can't happen
+ * Can get here for a system attribute (which never has an alias), or
+ * if alias name list is too short (which probably can't happen
* anymore). Neither of these cases is valid for a subselect RTE.
*/
if (rte->relid == InvalidOid)
elog(ERROR, "Invalid attnum %d for rangetable entry %s",
attnum, rte->eref->relname);
+
/*
* Use the real name of the table's column
*/
@@ -1007,6 +1011,7 @@ attnameIsSet(Relation rd, char *name)
}
return get_attisset(RelationGetRelid(rd), name);
}
+
#endif
#ifdef NOT_USED
@@ -1020,6 +1025,7 @@ attnumAttNelems(Relation rd, int attid)
{
return rd->rd_att->attrs[attid - 1]->attnelems;
}
+
#endif
/* given attribute id, return type of that attribute */
generated by cgit v1.2.3 (git 2.25.1) at 2025-05-19 20:50:03 +0000