Plz help me with this query

Question

i need to get each manager name, his department name and for each year that is for 81,82,83,84 count of employee's under that manager from emp and dept tables .
thanks in advance
select distinct deptno, TO_CHAR (HIREDATE, 'YY'), count(*) from emp group by TO_CHAR(HIREDATE, 'YY'), DEPTNO ORDER BY TO_CHAR(HIREDATE, 'YY'), DEPTNO;
the above query returns me count of employees ,year and deptno
SELECT DISTINCT E2.ENAME , E1.ENAME, E1.DEPTNO, E1.MGR, E1.EMPNO, E1.SAL, D.DNAME, D.LOC FROM EMP E1, EMP E2, DEPT D WHERE E1.MGR = E2.EMPNO AND E1.DEPTNO = D.DEPTNO ORDER BY E1.DEPTNO;
this query returned me manager names and employees under them
Message was edited by:
user450660

Answer 1

At that point you're not too far off, you have most of what you need. In general, any time you see the use of DISTINCT it's a sign that either your query or your data model isn't designed quite right.
SELECT m.ename,
       d.dname,
       TO_CHAR (e.hiredate, 'YY') AS hire_year,
       COUNT(*) AS emp_count
  FROM emp e, emp m, dept d
WHERE e.mgr = m.empno
   AND m.deptno = d.deptno
GROUP BY
       m.ename,
       d.dname,
       TO_CHAR (e.hiredate, 'YY');