QUERY: CREATE TABLE test_having (a int, b int, c char(8), d char);
QUERY: INSERT INTO test_having VALUES (0, 1, 'XXXX', 'A');
QUERY: INSERT INTO test_having VALUES (1, 2, 'AAAA', 'b');
QUERY: INSERT INTO test_having VALUES (2, 2, 'AAAA', 'c');
QUERY: INSERT INTO test_having VALUES (3, 3, 'BBBB', 'D');
QUERY: INSERT INTO test_having VALUES (4, 3, 'BBBB', 'e');
QUERY: INSERT INTO test_having VALUES (5, 3, 'bbbb', 'F');
QUERY: INSERT INTO test_having VALUES (6, 4, 'cccc', 'g');
QUERY: INSERT INTO test_having VALUES (7, 4, 'cccc', 'h');
QUERY: INSERT INTO test_having VALUES (8, 4, 'CCCC', 'I');
QUERY: INSERT INTO test_having VALUES (9, 4, 'CCCC', 'j');
QUERY: SELECT b, c FROM test_having
	GROUP BY b, c HAVING count(*) = 1;
b|c       
-+--------
1|XXXX    
3|bbbb    
(2 rows)

QUERY: SELECT lower(c), count(c) FROM test_having
	GROUP BY lower(c) HAVING count(*) > 2 OR min(a) = max(a);
lower   |count
--------+-----
bbbb    |    3
cccc    |    4
xxxx    |    1
(3 rows)

QUERY: SELECT c, max(a) FROM test_having
	GROUP BY c HAVING count(*) > 2 OR min(a) = max(a);
c       |max
--------+---
XXXX    |  0
bbbb    |  5
(2 rows)

QUERY: DROP TABLE test_having;
