PRO_NO FROM PRO) SELECT COUNT
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WITH PRO1 (PRO_EDATE, PRO_NO) AS (SELECT PRO_SDATE + PRO_DURAT, PRO_NO FROM PRO) SELECT COUNT (*), PRO_EDATE, AVG_SAL FROM (SELECT PRO_EDATE, AVG (EMP_SAL) FROM PRO1, EMP WHERE PRO1.PRO_NO = EMP.PRO_NO GROUP BY PRO1.PRO_NO) AS PRO_AVG_SAL (PRO_EDATE, AVG_SAL) GROUP BY PRO_EDATE, AVG_SAL; |
| Пример 15.16.1. |
| Закрыть окно |
