Microsoft JET Database Engine 错误 '80040e07' 标准表达式中数据类型不匹配。 /Enter.asp，行 21

<%@LANGUAGE="VBSCRIPT" CODEPAGE="936"%>
<!--#include file="Connections/connect.asp" -->
<%
' *** Validate request to log in to this site.
MM_LoginAction = Request.ServerVariables("URL")
If Request.QueryString<>"" Then MM_LoginAction = MM_LoginAction + "?" + Server.HTMLEncode(Request.QueryString)
MM_valUsername=CStr(Request.Form("Username"))
If MM_valUsername <> "" Then
  MM_fldUserAuthorization=""
  MM_redirectLoginSuccess="index.asp"
  MM_redirectLoginFailed="Errors.htm"
  MM_flag="ADODB.Recordset"
  set MM_rsUser = Server.CreateObject(MM_flag)
  MM_rsUser.ActiveConnection = MM_connect_STRING
  MM_rsUser.Source = "SELECT Username, Password"
  If MM_fldUserAuthorization <> "" Then MM_rsUser.Source = MM_rsUser.Source & "," & MM_fldUserAuthorization
  MM_rsUser.Source = MM_rsUser.Source & " FROM date1 WHERE Username='" & Replace(MM_valUsername,"'","''") &"' AND Password='" & Replace(Request.Form("Password"),"'","''") & "'"
  MM_rsUser.CursorType = 0
  MM_rsUser.CursorLocation = 2
  MM_rsUser.LockType = 3
  MM_rsUser.Open                ------------21行在这
  If Not MM_rsUser.EOF Or Not MM_rsUser.BOF Then 
    ' username and password match - this is a valid user
    Session("MM_Username") = MM_valUsername
    If (MM_fldUserAuthorization <> "") Then
      Session("MM_UserAuthorization") = CStr(MM_rsUser.Fields.Item(MM_fldUserAuthorization).Value)
    Else
      Session("MM_UserAuthorization") = ""
    End If
    if CStr(Request.QueryString("accessdenied")) <> "" And false Then
      MM_redirectLoginSuccess = Request.QueryString("accessdenied")
    End If
    MM_rsUser.Close
    Response.Redirect(MM_redirectLoginSuccess)
  End If
  MM_rsUser.Close
  Response.Redirect(MM_redirectLoginFailed)
End If
%>
<%

答案：检查SQL语句，或者输出SQL复制到查询分析器里运行。有可能是 输入数据类型与数据库字段数据类型不符合。还有就是:
 MM_rsUser.Open                ------------21行在这
不知道这里Open 什么 记得好像是 对象.Open sql语句,连接对象,游标类型,?

其他：sql里的password用方括号括起来，[password]这样。 sql里的password用方括号括起来

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