How to make outer join in Sub Query?

Question

Hi!
I'm facing one problem. Can anyone tell me - how to make outer join in sub query?
I'm pasting one sample code -
select e.empno, e.ename,e.job,e.sal,d.deptno,d.dname
from d_emp e, d_dept d
where e.deptno(+) = (
                      case
                        when d_dept.deptno = 10
                          then
                              select deptno
                              from d_dept
                              where dname = 'SALES'
                      else
                        d_dept.deptno
                      end
SQL>
ERROR at line 15:
ORA-01799: a column may not be outer-joined to a subqueryHow to resolve this issue?
Regards.

Answer 1

And any luck with this?
SQL> with emp as
  2  (select 100 empno, 'Abcd' ename, 1000 sal, 10 deptno from dual
  3  union all
  4  select 101 empno, 'RRR' ename, 2000 sal, 20 deptno from dual
  5  union all
  6  select 102 empno, 'KKK' ename, 3000 sal, 30 deptno from dual
  7  union all
  8  select 103 empno, 'PPP' ename, 4000 sal, 10 deptno from dual
  9  )
10  ,dept as
11  (select 10 deptno, 'FINANCE' dname from dual
12  union all
13  select 20 deptno, 'SALES' dname from dual
14  union all
15  select 30 deptno, 'IT' dname from dual
16  union all
17  select 40 deptno, 'HR' dname from dual
18  )
19  select e.empno, e.ename, e.sal, d.deptno, d.dname
20  from emp e,
21       (select decode(a.deptno, 10, b.deptno, a.deptno) deptno, decode(a.deptno, 10, b.dname, a.dname) dname
22      from dept a, (select deptno, dname
23                    from dept
24                      where dname = 'SALES'
25                     ) b
26       ) d
27  where e.deptno(+) = d.deptno
28  /
     EMPNO ENAM        SAL     DEPTNO DNAME
       101 RRR        2000         20 SALES
       101 RRR        2000         20 SALES
       102 KKK        3000         30 IT
                                   40 HR
SQL> Cheers
Sarma.