来自mongo system.profile查询的不同结果

Question

我使用mongo的system.profile分析性能，发现了这样的问题。

两种不以相同方式编写的查询语句会得到不同的结果。

set objCmd = Server.CreateObject("ADODB.Command")
   set objCmd.ActiveConnection = objConn

   objCmd.CommandText = "sp_insertSurveyAnswerDetail"
   objCmd.CommandType = 4  'adCmdStoredProc

   objCmd.Parameters.Append objCmd.CreateParameter("title", 202, 1, 50, replace(title, "'", "''"))
   objCmd.Parameters.Append objCmd.CreateParameter("username", 202, 1, 50, replace(username, "'", "''"))
   objCmd.Parameters.Append objCmd.CreateParameter("age", 129, 1, 10, replace(age, "'", "''"))
   objCmd.Parameters.Append objCmd.CreateParameter("occupation", 202, 1, 260, replace(occupation, "'", "''"))
   objCmd.Parameters.Append objCmd.CreateParameter("phone_no", 202, 1, 260, replace(phone_no, "'", "''"))
   objCmd.Parameters.Append objCmd.CreateParameter("email_add", 202, 1, 260, replace(email_add, "'", "''"))
   objCmd.Parameters.Append objCmd.CreateParameter("fax_no", 202, 1, 260, replace(fax_no, "'", "''"))
   objCmd.Parameters.Append objCmd.CreateParameter("address", 202, 1, 1000, replace(address, "'", "''"))
   objCmd.Parameters.Append objCmd.CreateParameter("discussion", 202, 1, 4000, replace(discussion, "'", "''"))
   objCmd.Parameters.Append objCmd.CreateParameter("public_service", 129, 1, 1, replace(public_service, "'", "''"))
   objCmd.Parameters.Append objCmd.CreateParameter("p_public_service", 129, 1, 1, replace(p_public_service, "'", "''"))
   objCmd.Parameters.Append objCmd.CreateParameter("visited", 129, 1, 1, replace(visited, "'", "''"))
   objCmd.Parameters.Append objCmd.CreateParameter("group_joined", 129, 1, 1, replace(Left(group_joined,1), "'", "''"))
   objCmd.Parameters.Append objCmd.CreateParameter("source_from", 202, 1, 500, replace(checkbox_source, "'", "''"))
   objCmd.Parameters.Append objCmd.CreateParameter("sender_IP", 202, 1, 50, replace(sender_ip, "'", "''"))
   objCmd.Parameters.Append objCmd.CreateParameter("webmaster_email", 202, 1, 260, replace(webmaster_email, "'", "''"))
   objCmd.Parameters.Append objCmd.CreateParameter("email_subject", 202, 1, 260, replace(email_subject, "'", "''"))
   objCmd.Parameters.Append objCmd.CreateParameter("email_body", 203, 1, -1, replace(mail_body, "'", "''"))

   on error resume next
   objCmd.Execute

         if objConn.Errors.Count = 0 then
               objConn.committrans
               Set objRS = Server.CreateObject("ADODB.Recordset")
               objRS.Open "select Max(cfg_id) from SurveyData", objConn 
               if not objRS.EOF then
               ref_id = objRS.Fields(0)
               end if
               objRS.Close
               on error goto 0
               response.redirect "registration_success.asp?lang=" & lang & "&refno=" & ref_id
        else
             'failed to add message
                objConn.RollbackTrans
                objConn.close
                set objConn = nothing
                response.redirect("")
                response.end
            end if
 end if