Add ORDER BY to join regression test.

src/test/regress/expected/join.out

@@ -1717,7 +1717,8 @@ SELECT '' AS "xxx", *
 -- Note that OUTER is a noise word
 --
 SELECT '' AS "xxx", *
-  FROM J1_TBL LEFT OUTER JOIN J2_TBL USING (i);
+  FROM J1_TBL LEFT OUTER JOIN J2_TBL USING (i)
+  ORDER BY i;
  xxx | i | j |   t   | k  
 -----+---+---+-------+----
      | 0 |   | zero  |   
@@ -1736,7 +1737,8 @@ SELECT '' AS "xxx", *
 (13 rows)
 
 SELECT '' AS "xxx", *
-  FROM J1_TBL LEFT JOIN J2_TBL USING (i);
+  FROM J1_TBL LEFT JOIN J2_TBL USING (i)
+  ORDER BY i;
  xxx | i | j |   t   | k  
 -----+---+---+-------+----
      | 0 |   | zero  |   
@@ -1785,7 +1787,8 @@ SELECT '' AS "xxx", *
 (9 rows)
 
 SELECT '' AS "xxx", *
-  FROM J1_TBL FULL OUTER JOIN J2_TBL USING (i);
+  FROM J1_TBL FULL OUTER JOIN J2_TBL USING (i)
+  ORDER BY i;
  xxx | i | j |   t   | k  
 -----+---+---+-------+----
      | 0 |   | zero  |   
@@ -1799,14 +1802,15 @@ SELECT '' AS "xxx", *
      | 6 | 6 | six   |   
      | 7 | 7 | seven |   
      | 8 | 8 | eight |   
+     |   |   |       |  0
      |   |   | null  |   
      |   | 0 | zero  |   
      |   |   |       |   
-     |   |   |       |  0
 (15 rows)
 
 SELECT '' AS "xxx", *
-  FROM J1_TBL FULL JOIN J2_TBL USING (i);
+  FROM J1_TBL FULL JOIN J2_TBL USING (i)
+  ORDER BY i;
  xxx | i | j |   t   | k  
 -----+---+---+-------+----
      | 0 |   | zero  |   
@@ -1820,10 +1824,10 @@ SELECT '' AS "xxx", *
      | 6 | 6 | six   |   
      | 7 | 7 | seven |   
      | 8 | 8 | eight |   
+     |   |   |       |  0
      |   |   | null  |   
      |   | 0 | zero  |   
      |   |   |       |   
-     |   |   |       |  0
 (15 rows)
 
 SELECT '' AS "xxx", *

src/test/regress/sql/join.sql

@@ -166,10 +166,12 @@ SELECT '' AS "xxx", *
 --
 
 SELECT '' AS "xxx", *
-  FROM J1_TBL LEFT OUTER JOIN J2_TBL USING (i);
+  FROM J1_TBL LEFT OUTER JOIN J2_TBL USING (i)
+  ORDER BY i;
 
 SELECT '' AS "xxx", *
-  FROM J1_TBL LEFT JOIN J2_TBL USING (i);
+  FROM J1_TBL LEFT JOIN J2_TBL USING (i)
+  ORDER BY i;
 
 SELECT '' AS "xxx", *
   FROM J1_TBL RIGHT OUTER JOIN J2_TBL USING (i);
@@ -178,10 +180,12 @@ SELECT '' AS "xxx", *
   FROM J1_TBL RIGHT JOIN J2_TBL USING (i);
 
 SELECT '' AS "xxx", *
-  FROM J1_TBL FULL OUTER JOIN J2_TBL USING (i);
+  FROM J1_TBL FULL OUTER JOIN J2_TBL USING (i)
+  ORDER BY i;
 
 SELECT '' AS "xxx", *
-  FROM J1_TBL FULL JOIN J2_TBL USING (i);
+  FROM J1_TBL FULL JOIN J2_TBL USING (i)
+  ORDER BY i;
 
 SELECT '' AS "xxx", *
   FROM J1_TBL LEFT JOIN J2_TBL USING (i) WHERE (k = 1);