Add dump support for SortBy nodes. Needed this while debugging a reported

problem with DISTINCT, so might as well commit it.

src/backend/nodes/outfuncs.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/nodes/outfuncs.c,v 1.327 2008/07/16 01:30:22 tgl Exp $
+ *	  $PostgreSQL: pgsql/src/backend/nodes/outfuncs.c,v 1.328 2008/07/17 16:02:12 tgl Exp $
  *
  * NOTES
  *	  Every node type that can appear in stored rules' parsetrees *must*
@@ -1985,6 +1985,17 @@ _outResTarget(StringInfo str, ResTarget *node)
 	WRITE_INT_FIELD(location);
 }
 
+static void
+_outSortBy(StringInfo str, SortBy *node)
+{
+	WRITE_NODE_TYPE("SORTBY");
+
+	WRITE_ENUM_FIELD(sortby_dir, SortByDir);
+	WRITE_ENUM_FIELD(sortby_nulls, SortByNulls);
+	WRITE_NODE_FIELD(useOp);
+	WRITE_NODE_FIELD(node);
+}
+
 static void
 _outConstraint(StringInfo str, Constraint *node)
 {
@@ -2426,6 +2437,9 @@ _outNode(StringInfo str, void *obj)
 			case T_ResTarget:
 				_outResTarget(str, obj);
 				break;
+			case T_SortBy:
+				_outSortBy(str, obj);
+				break;
 			case T_Constraint:
 				_outConstraint(str, obj);
 				break;