Question

我有以下查询给出舍入结果。如何将其修改为

停止四舍五入
显示2位小数。例如3.456 - ＆gt; 3.45

SELECT SUM(Invoice_Details.Amount) AS TotalNet_C FROM Invoice_Details WHERE Invoice_Details.Invoice_Number = ||InvNo||

Answer 1

要将其格式化为2位数，您可以例如将其转换为货币。

SELECT CAST(SUM(Invoice_Details.Amount) AS money) AS TotalNet_C 
FROM Invoice_Details
WHERE Invoice_Details.Invoice_Number = ||InvNo||

更具体地说，您可以使用CONVERT。请查看此详细信息：http://msdn.microsoft.com/de-de/library/ms187928.aspx

关于舍入：您想要裁剪数字，而不是围绕它们：

SELECT CAST(CAST(3.456 * 100 AS int) as float)/100

这样做。你的情况呢

SELECT CAST(CAST(CAST(SUM(Invoice_Details.Amount) * 100 AS int) as float)/100 AS money) AS TotalNet_C 
FROM Invoice_Details
WHERE Invoice_Details.Invoice_Number = ||InvNo||

Answer 2

你可以简单地这样做来舍入你的价值

  Str(ColumnName, 10, 2)

10-- this is for total length of your value.
2-- this is for how many decimal you want

Answer 3

declare @Num decimal(6,3)

set @Num = 3.456

 select LEFT(round(@Num, 2, 1),4)
OR 
select CAST(round(@Num, 2, 1)AS MONEY)

Answer 4

我认为你应该在sum_function之前转换值，你可以使用数字/小数的参数，就像这样：

select SUM(TRY_CONVERT(decimal(18,2), value) from TestTable ...

SQL SUM没有舍入

4 个答案: