*** How to add dynamic condition to Query ***

Question

Hi All,
Could you please help me out logic
i need only query
There is tables emp, dept
SELECT E.ENAME,D.DNAME
FROM EMP E, DEPT D
WHERE d.DEPTNO = e.DEPTNO(+)
AND (DYNAMIC CONDITION)
DYNAMIC CONDITION LOGIC IS
IF D.DEPTNO IS THERE IN E.DEPTNO THEN [E.JOB = 'MANAGER'] --- CONDITIION SHOULD ADD IN THE PLACE OF (DYNAMIC CONDITION)
IF D.DEPTNO IS NOT THERE IN E.DEPTNO THEN [ D.LOC = 'LONDON'] --- CONDITIION SHOULD ADD IN THE PLACE OF (DYNAMIC CONDITION)
I tried below
select e.ENAME, e.SAL, d.dname from emp e, dept d
where CASE WHEN e.deptno = d.deptno then e.job = 'MANAGER'
else D.loc = 'LONDON'
END
But its giving error...
Please give a solution
Thanks in Advance
KC

Answer 1

SELECT E.ENAME,D.DNAME, d.loc, e.job, e.deptno
FROM EMP E, DEPT D
WHERE d.DEPTNO = e.DEPTNO(+)
and (
       (e.deptno is null and d.loc='LONDON')
         or
       (e.deptno is not null and e.job='MANAGER')
     );  (But thats no dynamic sql!)