\set ECHO 0
-- You should write your tests
SELECT variant('foo', 'bar');
 variant 
---------
 (foo,bar)
(1 row)

SELECT 'foo' #? 'bar' AS arrowop;
  arrowop  
-----------
 (foo,bar)
(1 row)

CREATE TABLE ab (
    a_field variant
);
INSERT INTO ab VALUES('foo' #? 'bar');
SELECT (a_field).a, (a_field).b FROM ab;
  a  |  b  
-----+-----
 foo | bar
(1 row)

SELECT (variant('foo', 'bar')).a;
  a  
-----
 foo
(1 row)

SELECT (variant('foo', 'bar')).b;
  b  
-----
 bar
(1 row)

SELECT ('foo' #? 'bar').a;
  a  
-----
 foo
(1 row)

SELECT ('foo' #? 'bar').b;
  b  
-----
 bar
(1 row)

ROLLBACK;