Question

使用SQL Server 2005我有一个查询，它从包含数量计算字段的包中获取子记录。查询看起来像这样：

SELECT  TblB_1.fooID, 
    TblC.quantity * (TblA.quantity) AS Quantity, 
    TblB_1.name AS Name
    FROM    TblB AS TblB_1 INNER JOIN
              TblC ON TblB_1.fooID = TblC.fooID RIGHT OUTER JOIN
              TblB INNER JOIN
                TblA ON TblB.fooID = TblA.fooID ON TblC.parentfooID = TblB.fooID
    WHERE   (TblB.isBundle = 1) AND (TblA.isDeleted = 0)

我需要能够按ID分组并获得数量字段的总和。我已经尝试用这样的总和包装数量线：

SUM(TblC.quantity * (TblA.quantity)) AS Quantity,

然后添加

GROUP BY TblB_1.fooID

在WHERE子句之后，但是导致“选择列表中的TblB_1.name无效，因为它不包含在聚合函数或GROUP BY子句中”错误。

我也尝试使用子查询来完成这项任务，但我也无法完成这项工作，也无法在这里或网上找到我能够适应的例子。谢谢 - 丹

Answer 1

你很接近，你需要按所有非聚合字段进行分组。像这样

SELECT  TblB_1.fooID, 
    SUM(TblC.quantity * (TblA.quantity)) AS Quantity, 
    TblB_1.name AS Name
FROM    TblB AS TblB_1 INNER JOIN
          TblC ON TblB_1.fooID = TblC.fooID RIGHT OUTER JOIN
          TblB INNER JOIN
            TblA ON TblB.fooID = TblA.fooID ON TblC.parentfooID = TblB.fooID
WHERE   (TblB.isBundle = 1) AND (TblA.isDeleted = 0)
GROUP BY TblB_1.fooID, TblB_1.name

计算字段的SQL聚合

1 个答案: