輸出參數用於在同一個表中插入一行

Question

感謝您的幫助傢伙

我工作的一個基於Asp.net項目，我requiremnent是產生MaterialType +產品ID和的組合PARTNO - 4位數隨機數

注意：產品ID是主鍵，也將其設置爲輸出參數

例如如果材料的類型是500和產品ID生成55和隨機產生的無5434，然後部分沒有成爲555-5434

N嗷嗷我的問題是我怎麼能存儲在同一個表PARTNO，我有點想這樣

 Connection.Open() 
     Dim trn As SqlClient.SqlTransaction 
     trn = Connection.BeginTransaction 
     Using trn 


      Dim sqlcode As New SqlParameter("@ProductID", Products.ProductID) 
      sqlcode.Direction = ParameterDirection.InputOutput     
      Using Command As New SqlCommand("Product_Write", Connection, trn) 

       Command.CommandType = CommandType.StoredProcedure 
       Command.Parameters.Add(sqlcode)      Command.Parameters.AddWithValue("@MaterialType", Materialtype.MaterialTypeCode) 
       Command.Parameters.AddWithValue("@CategoryID", category.CategoryId) 
       Command.Parameters.AddWithValue("@ProductName", Products.ProductName) 
       Command.Parameters.AddWithValue("@ProductDescription", Products.ProductDescription) 
       Command.Parameters.AddWithValue("@ProductActive", Products.ProductActive) 
       Command.Parameters.AddWithValue("@ProductImage", Products.ProductImage) 
       Command.Parameters.AddWithValue("@PartNo", 0) 


       Command.ExecuteNonQuery() 
       Products.ProductID = CInt(sqlcode.Value) 
       'Insert the part no 

       Dim random As New Random() 
       Dim value As Integer = random.Next(9999) 
       Dim PartNo As String = CType((Materialtype.MaterialTypeCode + Products.ProductID).ToString + "-" + value.ToString, String) 


       'Dont know what to do 

       trn.Commit() 

       Connection.Close() 
      End Using 
     End Using 
    End Using 
    Return Products 
End Function 




ALTER PROCEDURE [dbo].[Product_Write] 
@ProductID bigint OUTPUT, 
@MaterialType int, 
@CategoryID bigint, 
@ProductName VARCHAR(MAX), 
@ProductDescription VARCHAR(MAX), 
@ProductActive Bit, 
@ProductImage VARCHAR(MAX), 
@PartNo VARCHAR(30) 
AS 
IF (@ProductID=0) 
BEGIN 
INSERT INTO T_Product(
MaterialType, 
CategoryID, 
ProductName, 
ProductDescription, 
ProductActive, 
ProductImage, 
PartNo) 
VALUES(
@MaterialType, 
@CategoryID, 
@ProductName, 
@ProductDescription, 
@ProductActive, 
@ProductImage, 
@PartNo) 

SET @ProductID=SCOPE_IDENTITY() 
END 
ELSE 
UPDATE T_Product SET 
     MaterialType=@MaterialType, 
     CategoryID=@CategoryID, 
     ProductName=@ProductName, 
     ProductDescription=@ProductDescription, 
     ProductActive=@ProductActive, 
     ProductImage=@ProductImage, 
     PartNo=@PartNo 
WHERE ProductID=@ProductID 
       Please help me out 

感謝

Answer 1

如果你可以更新存儲過程，你需要沿着這些路線的東西

declare @id int 
set @id = SCOPE_IDENTITY() 
UPDATE <Table> Set PartNo = MaterialType + convert(varchar(max),@id) + convert(varchar(4),CEILING(9999*RAND())) Where ID = @id