Введение в модель данных SQL

SELECT DEPT_NO FROM DEPT WHERE


SELECT DEPT_NO FROM DEPT WHERE NOT EXISTS (SELECT * FROM EMP, EMP EMP1 WHERE EMP1.EMP_NO <> EMP.EMP_NO AND EMP.DEPT_NO = DEPT.DEPT_NO AND EMP1.DEPT_NO = DEPT.DEPT_NO AND EMP1.EMP_NAME = EMP.EMP_NAME AND(EMP1.EMP_BDATE = EMP.EMP_BDATE OR (EMP.EMP_BDATE IS NULL AND EMP1.EMP_BDATE IS NULL)));
Пример 14.18.1.
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