FROM DEPT,
SELECT DEPT.DEPT_NO
FROM DEPT, EMP
WHERE DEPT.DEPT_NO = EMP.DEPT_NO
GROUP BY DEPT.DEPT_NO
HAVING EXISTS (SELECT *
FROM EMP EMP1
WHERE EMP1.DEPT_NO <> DEPT.DEPT_NO
GROUP BY EMP1.DEPT_NO
HAVING MAX (EMP1.EMP_SAL)= AVG (EMP.EMP_SAL));
Введение в модель данных SQL
SELECT DEPT.DEPT_NO
FROM DEPT, EMP
WHERE DEPT.DEPT_NO = EMP.DEPT_NO
GROUP BY DEPT.DEPT_NO
HAVING EXISTS (SELECT *
FROM EMP EMP1
WHERE EMP1.DEPT_NO <> DEPT.DEPT_NO
GROUP BY EMP1.DEPT_NO
HAVING MAX (EMP1.EMP_SAL)= AVG (EMP.EMP_SAL));