FROM EMP, EMP EMP1,
SELECT DISTINCT EMP_NO
FROM EMP, EMP EMP1, DEPT
WHERE EMP_NO NOT IN (SELECT DEPT_MNG FROM DEPT)
AND EMP_SAL = EMP1_SAL
AND EMP1.EMP_NO = DEPT.DEPT_MNG;
Введение в модель данных SQL
SELECT DISTINCT EMP_NO
FROM EMP, EMP EMP1, DEPT
WHERE EMP_NO NOT IN (SELECT DEPT_MNG FROM DEPT)
AND EMP_SAL = EMP1_SAL
AND EMP1.EMP_NO = DEPT.DEPT_MNG;