Question

如何获取SQL Server 2005中money数据类型列的总和？

我收到错误

操作数数据类型nvarchar对sum运算符无效。

当我使用

时

sum(AmountSold) as Amount

提前致谢！

完整查询是这样的：不在此处添加组，因为它列出了超过15列。

SELECT *,
       COUNT(RepDailyCollection.CommunityID)             AS DaysinTown,
       SUM(CAST(RepDailyCollection.AmountSold AS MONEY)) AS TownValue,
       SUM(RepDailyCollection.Spots)                     AS Spots,
       SUM(RepDailyCollection.AmountCollected)           AS Collected,
       CommuniTee.StartDate                              AS StartDate,
       Community.EndDate                                 AS EndDate,
       Community.IsClosed                                AS TownStatus
FROM   Community
       INNER JOIN RepDailyCollection
         ON RepDailyCollection.CommunityID = Community.CommunityID
WHERE  Community.RepID = @RepID

另外，使用Create table query

进行编辑

CREATE TABLE [dbo].[RepDailyCollection](
[RepDailyCollectionID] [bigint] IDENTITY(7500,1) NOT NULL,
[RepDailyInfoID] [bigint] NOT NULL,
[CommuniTeeID] [int] NULL,
[AmountSold] [money] NULL,
[AmountCollected] [money] NULL,
[Spots] [nvarchar](50) COLLATE Latin1_General_CI_AI NULL,
[IsCleared] [bit] NOT NULL,
[PaymentMethod] [nvarchar](50) COLLATE Latin1_General_CI_AI NULL,
[CheckNumber] [bigint] NULL,
[Invoice] [nvarchar](50) COLLATE Latin1_General_CI_AI NULL,
[TypeofCreditCard] [nvarchar](30) COLLATE Latin1_General_CI_AI NULL,
[OrderID] [int] NULL,
[NewCompanyName] [nvarchar](100) COLLATE Latin1_General_CI_AI NULL,
[PaymentDate] [datetime] NULL
) ON [PRIMARY]

Answer 1

如果您使用nvarchar作为数据类型，则无法使用聚合函数SUM()。该错误指出AmountSold列的数据类型为nvarchar，而不是money。

如果您的AmountSold列确实以nvarchar的形式创建数字数据，则可以执行以下操作：

sum(cast(AmountSold as money))

编辑：查看CREATE TABLE命令后，问题是Spots属于nvarchar数据类型，而您正试图调用{{1}在sum()上。这就是你收到错误的原因。

如果Spots确实创建了数字数据，那么您需要执行以下操作：

Spots

sql中的Money（数据类型）之和

1 个答案: