DEPT_MNG IS NULL THEN NULL
| SELECT DEPT.DEPT_NO, CASE WHEN DEPT. DEPT_MNG IS NULL THEN NULL ELSE (SELECT EMP.EMP_NAME FROM EMP WHERE EMP.EMP_NO = DEPT.DEPT_MNG), COUNT(*), MIN(EMP1.EMP_SAL), MAX(EMP1.EMP_SAL), AVG(EMP1.EMP_SAL) FROM DEPT, EMP, EMP EMP1 WHERE DEPT.DEPT_NO = EMP1.DEPT_NO GROUP BY DEPT.DEPT_NO; |
| Пример 15.4.3. |
| Закрыть окно |
