It seems some case-insensitive locales sort upper case before lower

(BBBB before bbbb) and others the other way around.  Provide comparison
files that cater to both approaches.

src/test/regress/expected/select_having_2.out

+--
+-- SELECT_HAVING
+--
+-- load test data
+CREATE TABLE test_having (a int, b int, c char(8), d char);
+INSERT INTO test_having VALUES (0, 1, 'XXXX', 'A');
+INSERT INTO test_having VALUES (1, 2, 'AAAA', 'b');
+INSERT INTO test_having VALUES (2, 2, 'AAAA', 'c');
+INSERT INTO test_having VALUES (3, 3, 'BBBB', 'D');
+INSERT INTO test_having VALUES (4, 3, 'BBBB', 'e');
+INSERT INTO test_having VALUES (5, 3, 'bbbb', 'F');
+INSERT INTO test_having VALUES (6, 4, 'cccc', 'g');
+INSERT INTO test_having VALUES (7, 4, 'cccc', 'h');
+INSERT INTO test_having VALUES (8, 4, 'CCCC', 'I');
+INSERT INTO test_having VALUES (9, 4, 'CCCC', 'j');
+SELECT b, c FROM test_having
+	GROUP BY b, c HAVING count(*) = 1 ORDER BY b, c;
+ b |    c     
+---+----------
+ 1 | XXXX    
+ 3 | bbbb    
+(2 rows)
+
+-- HAVING is equivalent to WHERE in this case
+SELECT b, c FROM test_having
+	GROUP BY b, c HAVING b = 3 ORDER BY b, c;
+ b |    c     
+---+----------
+ 3 | bbbb    
+ 3 | BBBB    
+(2 rows)
+
+SELECT lower(c), count(c) FROM test_having
+	GROUP BY lower(c) HAVING count(*) > 2 OR min(a) = max(a)
+	ORDER BY lower(c);
+ lower | count 
+-------+-------
+ bbbb  |     3
+ cccc  |     4
+ xxxx  |     1
+(3 rows)
+
+SELECT c, max(a) FROM test_having
+	GROUP BY c HAVING count(*) > 2 OR min(a) = max(a)
+	ORDER BY c;
+    c     | max 
+----------+-----
+ bbbb     |   5
+ XXXX     |   0
+(2 rows)
+
+DROP TABLE test_having;

src/test/regress/expected/select_implicit_1.out

@@ -22,10 +22,10 @@ SELECT c, count(*) FROM test_missing_target GROUP BY test_missing_target.c ORDER
     c     | count 
 ----------+-------
  AAAA     |     2
- bbbb     |     1
  BBBB     |     2
- cccc     |     2
+ bbbb     |     1
  CCCC     |     2
+ cccc     |     2
  XXXX     |     1
 (6 rows)
 
@@ -34,8 +34,8 @@ SELECT count(*) FROM test_missing_target GROUP BY test_missing_target.c ORDER BY
  count 
 -------
      2
-     1
      2
+     1
      2
      2
      1
@@ -104,10 +104,10 @@ SELECT c, count(*) FROM test_missing_target GROUP BY 1 ORDER BY 1;
     c     | count 
 ----------+-------
  AAAA     |     2
- bbbb     |     1
  BBBB     |     2
- cccc     |     2
+ bbbb     |     1
  CCCC     |     2
+ cccc     |     2
  XXXX     |     1
 (6 rows)
 

src/test/regress/expected/select_implicit_2.out

+--
+-- SELECT_IMPLICIT
+-- Test cases for queries with ordering terms missing from the target list.
+-- This used to be called "junkfilter.sql".
+-- The parser uses the term "resjunk" to handle these cases.
+-- - thomas 1998-07-09
+--
+-- load test data
+CREATE TABLE test_missing_target (a int, b int, c char(8), d char);
+INSERT INTO test_missing_target VALUES (0, 1, 'XXXX', 'A');
+INSERT INTO test_missing_target VALUES (1, 2, 'AAAA', 'b');
+INSERT INTO test_missing_target VALUES (2, 2, 'AAAA', 'c');
+INSERT INTO test_missing_target VALUES (3, 3, 'BBBB', 'D');
+INSERT INTO test_missing_target VALUES (4, 3, 'BBBB', 'e');
+INSERT INTO test_missing_target VALUES (5, 3, 'bbbb', 'F');
+INSERT INTO test_missing_target VALUES (6, 4, 'cccc', 'g');
+INSERT INTO test_missing_target VALUES (7, 4, 'cccc', 'h');
+INSERT INTO test_missing_target VALUES (8, 4, 'CCCC', 'I');
+INSERT INTO test_missing_target VALUES (9, 4, 'CCCC', 'j');
+--   w/ existing GROUP BY target
+SELECT c, count(*) FROM test_missing_target GROUP BY test_missing_target.c ORDER BY c;
+    c     | count 
+----------+-------
+ AAAA     |     2
+ bbbb     |     1
+ BBBB     |     2
+ cccc     |     2
+ CCCC     |     2
+ XXXX     |     1
+(6 rows)
+
+--   w/o existing GROUP BY target using a relation name in GROUP BY clause
+SELECT count(*) FROM test_missing_target GROUP BY test_missing_target.c ORDER BY c;
+ count 
+-------
+     2
+     1
+     2
+     2
+     2
+     1
+(6 rows)
+
+--   w/o existing GROUP BY target and w/o existing a different ORDER BY target
+--   failure expected
+SELECT count(*) FROM test_missing_target GROUP BY a ORDER BY b;
+ERROR:  Attribute test_missing_target.b must be GROUPed or used in an aggregate function
+--   w/o existing GROUP BY target and w/o existing same ORDER BY target
+SELECT count(*) FROM test_missing_target GROUP BY b ORDER BY b;
+ count 
+-------
+     1
+     2
+     3
+     4
+(4 rows)
+
+--   w/ existing GROUP BY target using a relation name in target
+SELECT test_missing_target.b, count(*)
+  FROM test_missing_target GROUP BY b ORDER BY b;
+ b | count 
+---+-------
+ 1 |     1
+ 2 |     2
+ 3 |     3
+ 4 |     4
+(4 rows)
+
+--   w/o existing GROUP BY target
+SELECT c FROM test_missing_target ORDER BY a;
+    c     
+----------
+ XXXX    
+ AAAA    
+ AAAA    
+ BBBB    
+ BBBB    
+ bbbb    
+ cccc    
+ cccc    
+ CCCC    
+ CCCC    
+(10 rows)
+
+--   w/o existing ORDER BY target
+SELECT count(*) FROM test_missing_target GROUP BY b ORDER BY b desc;
+ count 
+-------
+     4
+     3
+     2
+     1
+(4 rows)
+
+--   group using reference number
+SELECT count(*) FROM test_missing_target ORDER BY 1 desc;
+ count 
+-------
+    10
+(1 row)
+
+--   order using reference number
+SELECT c, count(*) FROM test_missing_target GROUP BY 1 ORDER BY 1;
+    c     | count 
+----------+-------
+ AAAA     |     2
+ bbbb     |     1
+ BBBB     |     2
+ cccc     |     2
+ CCCC     |     2
+ XXXX     |     1
+(6 rows)
+
+--   group using reference number out of range
+--   failure expected
+SELECT c, count(*) FROM test_missing_target GROUP BY 3;
+ERROR:  GROUP BY position 3 is not in target list
+--   group w/o existing GROUP BY and ORDER BY target under ambiguous condition
+--   failure expected
+SELECT count(*) FROM test_missing_target x, test_missing_target y 
+	WHERE x.a = y.a
+	GROUP BY b ORDER BY b;
+ERROR:  Column reference "b" is ambiguous
+--   order w/ target under ambiguous condition
+--   failure NOT expected
+SELECT a, a FROM test_missing_target
+	ORDER BY a;
+ a | a 
+---+---
+ 0 | 0
+ 1 | 1
+ 2 | 2
+ 3 | 3
+ 4 | 4
+ 5 | 5
+ 6 | 6
+ 7 | 7
+ 8 | 8
+ 9 | 9
+(10 rows)
+
+--   order expression w/ target under ambiguous condition
+--   failure NOT expected
+SELECT a/2, a/2 FROM test_missing_target
+	ORDER BY a/2;
+ ?column? | ?column? 
+----------+----------
+        0 |        0
+        0 |        0
+        1 |        1
+        1 |        1
+        2 |        2
+        2 |        2
+        3 |        3
+        3 |        3
+        4 |        4
+        4 |        4
+(10 rows)
+
+--   group expression w/ target under ambiguous condition
+--   failure NOT expected
+SELECT a/2, a/2 FROM test_missing_target
+	GROUP BY a/2 ORDER BY a/2;
+ ?column? | ?column? 
+----------+----------
+        0 |        0
+        1 |        1
+        2 |        2
+        3 |        3
+        4 |        4
+(5 rows)
+
+--   group w/ existing GROUP BY target under ambiguous condition
+SELECT x.b, count(*) FROM test_missing_target x, test_missing_target y 
+	WHERE x.a = y.a
+	GROUP BY x.b ORDER BY x.b;
+ b | count 
+---+-------
+ 1 |     1
+ 2 |     2
+ 3 |     3
+ 4 |     4
+(4 rows)
+
+--   group w/o existing GROUP BY target under ambiguous condition
+SELECT count(*) FROM test_missing_target x, test_missing_target y 
+	WHERE x.a = y.a
+	GROUP BY x.b ORDER BY x.b;
+ count 
+-------
+     1
+     2
+     3
+     4
+(4 rows)
+
+--   group w/o existing GROUP BY target under ambiguous condition
+--   into a table
+SELECT count(*) INTO TABLE test_missing_target2 
+FROM test_missing_target x, test_missing_target y 
+	WHERE x.a = y.a
+	GROUP BY x.b ORDER BY x.b;
+SELECT * FROM test_missing_target2;
+ count 
+-------
+     1
+     2
+     3
+     4
+(4 rows)
+
+--  Functions and expressions
+--   w/ existing GROUP BY target
+SELECT a%2, count(b) FROM test_missing_target
+GROUP BY test_missing_target.a%2
+ORDER BY test_missing_target.a%2;
+ ?column? | count 
+----------+-------
+        0 |     5
+        1 |     5
+(2 rows)
+
+--   w/o existing GROUP BY target using a relation name in GROUP BY clause
+SELECT count(c) FROM test_missing_target
+GROUP BY lower(test_missing_target.c)
+ORDER BY lower(test_missing_target.c);
+ count 
+-------
+     2
+     3
+     4
+     1
+(4 rows)
+
+--   w/o existing GROUP BY target and w/o existing a different ORDER BY target
+--   failure expected
+SELECT count(a) FROM test_missing_target GROUP BY a ORDER BY b;
+ERROR:  Attribute test_missing_target.b must be GROUPed or used in an aggregate function
+--   w/o existing GROUP BY target and w/o existing same ORDER BY target
+SELECT count(b) FROM test_missing_target GROUP BY b/2 ORDER BY b/2;
+ count 
+-------
+     1
+     5
+     4
+(3 rows)
+
+--   w/ existing GROUP BY target using a relation name in target
+SELECT lower(test_missing_target.c), count(c)
+  FROM test_missing_target GROUP BY lower(c) ORDER BY lower(c);
+ lower | count 
+-------+-------
+ aaaa  |     2
+ bbbb  |     3
+ cccc  |     4
+ xxxx  |     1
+(4 rows)
+
+--   w/o existing GROUP BY target
+SELECT a FROM test_missing_target ORDER BY upper(d);
+ a 
+---
+ 0
+ 1
+ 2
+ 3
+ 4
+ 5
+ 6
+ 7
+ 8
+ 9
+(10 rows)
+
+--   w/o existing ORDER BY target
+SELECT count(b) FROM test_missing_target
+	GROUP BY (b + 1) / 2 ORDER BY (b + 1) / 2 desc;
+ count 
+-------
+     7
+     3
+(2 rows)
+
+--   group w/o existing GROUP BY and ORDER BY target under ambiguous condition
+--   failure expected
+SELECT count(x.a) FROM test_missing_target x, test_missing_target y 
+	WHERE x.a = y.a
+	GROUP BY b/2 ORDER BY b/2;
+ERROR:  Column reference "b" is ambiguous
+--   group w/ existing GROUP BY target under ambiguous condition
+SELECT x.b/2, count(x.b) FROM test_missing_target x, test_missing_target y 
+	WHERE x.a = y.a
+	GROUP BY x.b/2 ORDER BY x.b/2;
+ ?column? | count 
+----------+-------
+        0 |     1
+        1 |     5
+        2 |     4
+(3 rows)
+
+--   group w/o existing GROUP BY target under ambiguous condition
+--   failure expected due to ambiguous b in count(b)
+SELECT count(b) FROM test_missing_target x, test_missing_target y 
+	WHERE x.a = y.a
+	GROUP BY x.b/2;
+ERROR:  Column reference "b" is ambiguous
+--   group w/o existing GROUP BY target under ambiguous condition
+--   into a table
+SELECT count(x.b) INTO TABLE test_missing_target3 
+FROM test_missing_target x, test_missing_target y 
+	WHERE x.a = y.a
+	GROUP BY x.b/2 ORDER BY x.b/2;
+SELECT * FROM test_missing_target3;
+ count 
+-------
+     1
+     5
+     4
+(3 rows)
+
+--   Cleanup
+DROP TABLE test_missing_target;
+DROP TABLE test_missing_target2;
+DROP TABLE test_missing_target3;