Outer join information

Question

dear expert;
if you look at the outer join section. The user claims there is no equivalent syntax for full outer join. Is that true.
http://www.oracle-base.com/articles/9i/ANSIISOSQLSupport.php
If not, does anyone know the equivalent. Thank you

Answer 1

SELECT  e.last_name,
         d.department_name
   FROM  employees e,
         departments d
   WHERE e.department_id = d.department_id
UNION ALL
SELECT  e.last_name,
         null
   FROM  employees e
   WHERE e.department_id NOT IN (
                                 SELECT  d.department_id
                                   FROM  departments d
      OR e.department_id IS NULL
UNION ALL
SELECT  null,
         d.department_id
   FROM  departments d
   WHERE NOT EXISTS (
                     SELECT  1
                       FROM  employees e
                       WHERE e.department_id = d.department_id
/SY.