Question

我坚持这个问题，我一直在努力根据客户分组数据，但没有运气，任何人都可以提供帮助。

SELECT S.Name AS 'CstName', 

       S.MinPrice - SUM(coalesce(c.Balance,0))  AS 'Blc',

       S.NumberOfItems AS 'Sold'


FROM Cst c, (
SELECT c.Name, c.address, c.Balance, (Min(s.Price)*i.Qty) AS MinPrice, SUM(i.Qty) AS NumberOfItems
FROM             dbo.Cst AS c 
             INNER JOIN
                         dbo.Odr AS o ON c.Name = o.Cust 
             INNER JOIN
                         dbo.inc AS i ON i.Order_no = o.Order_No 
             INNER JOIN
                         dbo.spls AS s ON i.Item = s.Item
WHERE        i.Item = s.Item AND o.Cust =c.Name
group by i.Qty, c.Name, c.Balance, c.address) S


GROUP BY S.Name,S.MinPrice, S.Address, S.Balance, S.NumberOfItems

结果应该只显示Tom Mary一次

CstName   Blc    Sold 
Tom      207.69   1.00 
Tom      210.00  12.00 
Tom      224.45  10.00
Mary     217.47  6.00 
Mary     237.54  12.00

Answer 1

由于您希望按每个客户分组并显示一行，因此您需要在GROUP BY

中汇总您未使用的列

因此，在您的SELECT中，您应汇总S.MinPrice和S.NumberOfItems并将其从GROUP BY

中删除

SELECT S.Name                   AS 'CstName', 

       SUM(S.MinPrice) - SUM(coalesce(c.Balance,0))  AS 'Blc', -- Based on your need you can use any of the aggregation functions

       MAX(S.NumberOfItems)              AS 'Sold' -- Based on your need you can use any of the aggregation functions

...

GROUP BY S.Name

子查询未正确分组返回的数据

1 个答案: