modify sloanOrdering.pg file and add result file

Author: bipashabg

docqueries/ordering/sloanOrdering.pg

@@ -2,6 +2,6 @@
 -- Creative Commons Attribution-Share Alike 3.0 License : https://creativecommons.org/licenses/by-sa/3.0/
 /* -- q1 */
 SELECT * FROM pgr_sloanOrdering(
-  'SELECT id, source, target, cost, reverse_cost FROM edges'
+  'SELECT id, source, target, cost, reverse_cost FROM edges WHERE id < 2'
   );
 /* -- q2 */

docqueries/ordering/sloanOrdering.result

@@ -0,0 +1,16 @@
+BEGIN;
+BEGIN
+SET client_min_messages TO NOTICE;
+SET
+/* -- q1 */
+SELECT * FROM pgr_sloanOrdering(
+  'SELECT id, source, target, cost, reverse_cost FROM edges WHERE id < 2'
+  );
+ seq | node
+-----+------
+   1 |    1
+(1 row)
+
+/* -- q2 */
+ROLLBACK;
+ROLLBACK

docqueries/ordering/test.conf

@@ -3,6 +3,7 @@
 %main::tests = (
     'any' => {
         'files' => [qw(
+            sloanOrdering.pg
             cuthillMckeeOrdering.pg
             topologicalSort.pg
 	    sloanOrdering.pg