SELECT A.AUTL as user1, B.AUTL as user2
FROM (SELECT autl
FROM QSYS2.AUTHORIZATION_LIST_USER_INFO
WHERE user_name = 'profile_1') A
FULL OUTER JOIN (SELECT autl
FROM QSYS2.AUTHORIZATION_LIST_USER_INFO
WHERE user_name = 'profile_2') B
ON A.AUTL = B.AUTL;