-- test bs_date comparison operators
SELECT '2057/10/19'::bs_date = '2057/10/19'::bs_date;
 ?column? 
----------
 t
(1 row)

SELECT '2057/10/19'::bs_date != '2057/10/18'::bs_date;
 ?column? 
----------
 t
(1 row)

SELECT '2057/10/19'::bs_date <> '2057/10/18'::bs_date;
 ?column? 
----------
 t
(1 row)

SELECT '2057/10/19'::bs_date < '2057/10/20'::bs_date;
 ?column? 
----------
 t
(1 row)

SELECT '2057/10/19'::bs_date <= '2057/10/20'::bs_date;
 ?column? 
----------
 t
(1 row)

SELECT '2057/10/19'::bs_date > '2057/10/18'::bs_date;
 ?column? 
----------
 t
(1 row)

SELECT '2057/10/19'::bs_date >= '2057/10/18'::bs_date;
 ?column? 
----------
 t
(1 row)