sql-server-2008 - strcomp 不适用于 ms sql

Question

用于登录的代码ms access，它工作正常。但是，我需要将数据库更改为ms sql 2008并且 insql strcomp不起作用。那么，我是否需要替代strcompinsql或者如何使下面的代码与ms sql数据库一起使用？

Set rs = con.Execute("SELECT * FROM Users where StrComp(UserName, '" & sfindtext & "', 0) = 0")

If rs.EOF Then
    recfound = False
Else
  With rs
    recfound = True
     UserID = !UserID
     Username = !Username
     Password = !UPassword
     Privilege = !Privilege
  End With
End If

Answer 1

您可以使用CASE语句来检查 的值sfindtext：

Set rs = con.Execute("
SELECT * 
FROM Users 
where (case when UserName = '" & sfindtext & "' then 0 else 1 end) = 0")

这是查询工作的SQL Fiddle Demo

或者你甚至不需要逻辑CASE部分：

Set rs = con.Execute("
SELECT * 
FROM Users 
where UserName = '" & sfindtext & "'"