private static string getSelect <T>(WhereHelperBase t, string selectSql)
 {
     if (string.IsNullOrEmpty(selectSql) == false)
     {
         if (selectSql.StartsWith("Select", StringComparison.CurrentCultureIgnoreCase))
         {
             return(selectSql);
         }
         return("SELECT " + selectSql);
     }
     return(SelectHelper.CreateSelectHeader(typeof(T), t._headers, t.GetTypes()));
 }