*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.191 2000/09/19 18:17:55 petere Exp $
+ * $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.192 2000/09/25 18:38:39 tgl Exp $
*
* HISTORY
* AUTHOR DATE MAJOR EVENT
* between table_ref := '(' joined_table ')' alias_clause
* and joined_table := '(' joined_table ')'. So, we must have the
* redundant-looking productions here instead.
+ *
+ * Note that the SQL spec does not permit a subselect (<derived_table>)
+ * without an alias clause, so we don't either. This avoids the problem
+ * of needing to invent a refname for an unlabeled subselect.
*/
table_ref: relation_expr
{
$1->name = $2;
$$ = (Node *) $1;
}
- | '(' select_clause ')'
- {
- RangeSubselect *n = makeNode(RangeSubselect);
- n->subquery = $2;
- n->name = NULL;
- $$ = (Node *) n;
- }
| '(' select_clause ')' alias_clause
{
RangeSubselect *n = makeNode(RangeSubselect);