SELECT DEPT_NO, EMP_BDATE, MAX
SELECT DEPT_NO, EMP_BDATE, MAX (EMP_SAL) AS MAX_SAL,
GROUPING (DEPT_NO) AS GDN, GROUPING (EMP_BDATE)
AS GEB
FROM EMP
GROUP BY ROLLUP (DEPT_NO, EMP_BDATE);
Введение в модель данных SQL
SELECT DEPT_NO, EMP_BDATE, MAX (EMP_SAL) AS MAX_SAL,
GROUPING (DEPT_NO) AS GDN, GROUPING (EMP_BDATE)
AS GEB
FROM EMP
GROUP BY ROLLUP (DEPT_NO, EMP_BDATE);