ALTER DOMAIN .. SET / DROP NOT NULL

ALTER DOMAIN .. SET / DROP DEFAULT
ALTER DOMAIN .. ADD / DROP CONSTRAINT

New files:
- doc/src/sgml/ref/alter_domain.sgml

Rod Taylor

src/backend/parser/parse_expr.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/parser/parse_expr.c,v 1.132 2002/11/30 21:25:05 tgl Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/parser/parse_expr.c,v 1.133 2002/12/06 03:28:33 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -629,6 +629,14 @@ transformExpr(ParseState *pstate, Node *expr, ConstraintTestValue *domVal)
 
 		case T_DomainConstraintValue:
 			{
+				/*
+				 * If domVal is NULL, we are not translating an expression that
+				 * can use it
+				 */
+				if (domVal == NULL)
+					elog(ERROR, "VALUE is not allowed in expression for node %d",
+						 nodeTag(expr));
+
 				result = (Node *) copyObject(domVal);
 
 				break;