我有以下功能如何连接数字和字符串以格式化T-SQL中的数字?
ALTER FUNCTION [dbo].[ActualWeightDIMS]
(
-- Add the parameters for the function here
@ActualWeight int,
@Actual_Dims_Lenght int,
@Actual_Dims_Width int,
@Actual_Dims_Height int
)
RETURNS varchar(50)
AS
BEGIN
DECLARE @ActualWeightDIMS varchar(50);
--Actual Weight
IF (@ActualWeight is not null)
SET @ActualWeightDIMS = @ActualWeight;
--Actual DIMS
IF (@Actual_Dims_Lenght is not null) AND
(@Actual_Dims_Width is not null) AND (@Actual_Dims_Height is not null)
SET @ActualWeightDIMS= @Actual_Dims_Lenght + 'x' + @Actual_Dims_Width + 'x' + @Actual_Dims_Height;
RETURN(@ActualWeightDIMS);
END
但是当我试图使用它,我得到了下面的错误“转换为varchar值‘X’到的数据类型为int时转换失败。”当我使用下面的select语句
select
BA_Adjustment_Detail.ID_Number [ID_Number],
BA_Adjustment_Detail.Submit_Date [Submit_Date],
BA_Category.Category [category],
BA_Type_Of_Request.Request [Type_Of_Request],
dbo.ActualWeightDIMS(BA_Adjustment_Detail.ActualWeight,BA_Adjustment_Detail.Actual_Dims_Lenght,BA_Adjustment_Detail.Actual_Dims_Width,BA_Adjustment_Detail.Actual_Dims_Height) [Actual Weight/DIMS],
BA_Adjustment_Detail.Notes [Notes],
BA_Adjustment_Detail.UPSCustomerNo [UPSNo],
BA_Adjustment_Detail.TrackingNo [AirbillNo],
BA_Adjustment_Detail.StoreNo [StoreNo],
BA_Adjustment_Detail.Download_Date [Download_Date],
BA_Adjustment_Detail.Shipment_Date[ShipmentDate],
BA_Adjustment_Detail.FranchiseNo [FranchiseNo],
BA_Adjustment_Detail.CustomerNo [CustomerNo],
BA_Adjustment_Detail.BillTo [BillTo],
BA_Adjustment_Detail.Adjustment_Amount_Requested [Adjustment_Amount_Requested]
from BA_Adjustment_Detail
inner join BA_Category
on BA_Category.ID = BA_Adjustment_Detail.CategoryID
inner join BA_Type_Of_Request
on BA_Type_Of_Request.ID = BA_Adjustment_Detail.TypeOfRequestID
我想要做的是,如果ActualWeight不为空则返回ActualWeight为“实际重量/ DIMS”或者使用的Actual_Dims_Lenght,宽度和高度。
如果是DIMS,那么我想格式化输出为LenghtxWidhtxHeight(15x10x4)。 ActualWeight,Adcutal_Dims_Lenght,Width和Height都是int(整数)值,但“Actual Weight/DIMS”的输出应该是varchar(50)。
我在哪里弄错了?
感谢
编辑:用户只能挑重量或DIMS ASP.net页面上,如果用户选择DIMS那么他们必须提供长度,宽度和高度。否则它会在ASP.net页面上显示错误。我应该担心在SQL方面呢?
您应该始终指定varchar的长度:http://sqlblog.com/blogs/aaron_bertrand/archive/2009/10/09/bad-habits-to-kick-declaring-varchar-without-length.aspx – 2012-09-24 04:25:02