sql – 访问替代EXCEPT子句

发布时间：2021-01-27 12:51:50 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));

（编辑：应用网_丽江站长网）

【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容!