how to add a temporary column in sql without create a procedure

Yes - but you would need to change your query slightly. I assume you are issuing this from a langauge of some form, rather than entering directly into SQL yourself, in which case, pass the start and end dates as parameters to the SqlCommand (I'll show it in C#):

using (SqlConnection con = new SqlConnection(strConnect))
    {
    con.Open();
    using (SqlCommand com = new SqlCommand("SELECT *, @STARTDATE AS StartDate. @ENDDATE AS EndDate FROM tblDailyMaintenceDetails WHERE MaintenceDate BETWEEN @STARTDATE AND @ENDDATE", con))
        {
        com.Parameters.AddWithValue("@STARTDATE", new DateTime(2008, 12, 28));
        com.Parameters.AddWithValue("@ENDDATE", new DateTime(2013, 4, 6));
        using (SqlDataReader reader = com.ExecuteReader())
            {
            while (reader.Read())
                {
                ...
                }
            }
        }
    }

You don't need to use parameters, it just makes it easier to keep the two dates the same in both parts of the SQL