DEPT NATURAL INNER JOIN EMP
SELECT DEPT.DEPT_NO, EMP1.EMP_NAME, COUNT(*), MIN(EMP2.EMP_SAL),
MAX(EMP2.EMP_SAL), AVG(EMP2.EMP_SAL)
FROM ( DEPT NATURAL INNER JOIN EMP AS EMP2)
INNER JOIN EMP AS EMP1 ON DEPT.DEPT_MNG = EMP1.EMP_NO
GROUP BY DEPT.DEPT_NO, EMP1.EMP_NAME;
