Question

我需要帮助

我有三张表格如下：

customers [ CID , name , address , phone ] 

contracts [ ID , CID , TotalPrice , ] 

Payment [ ID , CID , pay ]

我想得到客户的姓名，电话号码和 sum（contract .TotalPrice）的值 - sum（Payment.pay）为Remaning

但是我很难做到这一点

我使用microsoft access 2007

我使用此陈述

select customers.name , customers.phone , customers.address, (sum( contracts .TotalPrice ) - sum(Payment.pay)) as Remaning from customers  inner join  contracts on customers.CID=contracts.CID  inner join Payment on contracts.CID=Payment.CID ";

Answer 1

select customers.CID ,customers.[name] , customers.phone , customers.address, 
(sum( contracts .TotalPrice ) - sum(Payment.pay)) as Remaning 
from customers  inner join  contracts on customers.CID=contracts.CID  
inner join Payment on contracts.CID=Payment.CID GROUP BY customers.CID";

编辑：您需要在MS Access

中附加带“[]”的保留关键字

sql语句加入三个表

1 个答案: