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sql – 访问替代EXCEPT子句

发布时间:2021-01-27 02:17:57 所属栏目:MsSql教程 来源:网络整理
导读:如何在ms访问中获得与下面的SQL代码相同的结果?它不承认EXCEPT条款…… SELECT DISTINCT P.Name,T.Training FROM Prof AS P,Training_done AS TC,Trainings AS T WHERE (P.Name Like '*' NameProf '*') AND (P.Primary_Area = T.Cod_Area)EXCEPTSELECT DI

如何在ms访问中获得与下面的SQL代码相同的结果?它不承认EXCEPT条款……

SELECT DISTINCT 
       P.Name,T.Training
  FROM Prof AS P,Training_done AS TC,Trainings AS T
 WHERE (P.Name Like '*' & NameProf & '*') 
   AND (P.Primary_Area = T.Cod_Area)
EXCEPT
SELECT DISTINCT 
       P.Name,Trainings AS T
 WHERE (P.Name Like '*' & NameProf & '*') 
   AND (P.Cod_Prof = TC.Cod_Prof);

提前致谢!

解决方法

为了摆脱除外,您可以结合条件并否定第二个:
SELECT DISTINCT 
       P.Name,Trainings AS T
 WHERE ((P.Name Like '*' & NameProf & '*') AND
        (P.Primary_Area = T.Cod_Area)) 
   AND NOT ((P.Name Like '*' & NameProf & '*') AND
            (P.Cod_Prof = TC.Cod_Prof));

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