Question

我在4个月前在 Store old data in one column and update new data in another column within same table发布了一个问题。

现在，我正在重新编写代码，这是我的问题。单击网页上的“更新”按钮后，旧（上一个）LastName未存储在别名列中。实际上，新 LastName存储在 LastName （对于新LastName）和 Alias （据称对于之前的LastName）列中。我需要将旧 LastName保存在别名列中。请在下面查看，看看我做错了什么。提前谢谢！

存储过程

ALTER PROCEDURE [dbo].[KeepAliasName]
@PeopleID int,
@LastName varchar(25)

AS BEGIN

UPDATE People
SET Alias = LastName,
LastName = @LastName

WHERE CAST(PeopleID AS Varchar(25)) = @PeopleID

END

调用存储过程的代码

Dim oCmd1
Dim ln
Dim retCount

Set oCmd1 = Server.CreateObject("ADODB.Connection")
Set oCmd1 = Server.CreateObject("ADODB.Command")

''' EXECUTE THE COMMAND TO CREATE THE RECORDSET
With oCmd1
.ActiveConnection = Connect
.Commandtext = "KeepAliasName"
.CommandType = adoCmd1StoredProc
.Parameters.Append .CreateParameter("@PeopleID", adInteger, adParamInput, 25)
.Parameters("@PeopleID") = pID 'some Employee you get from your code
.Parameters.Append .CreateParameter("@LastName", adVarChar, adParamInput, 25)
.Parameters("@LastName") = lastnameVal 'some Employee's name you get from your code
.Execute ln, , adExecuteNoRecords
End With

Set oCmd1 = Nothing

Answer 1

除非有一个Doh时刻，例如将新姓氏设置为旧姓氏，y = th唯一的解释是dbms以相反的顺序执行这两个集合！

很容易找到。

ALTER PROCEDURE [dbo].[KeepAliasName]
@PeopleID int,
@LastName varchar(25)


AS BEGIN

UPDATE People
SET Alias = LastName

WHERE CAST(PeopleID AS Varchar(25)) = @PeopleID

UPDATE People
SET LastName = @LastName

WHERE CAST(PeopleID AS Varchar(25)) = @PeopleID

END

能够在一列中更新新数据但不能将旧数据存储在另一列中

1 个答案: