public void start() {
   conn = SQL.getConn();
   for (int i = 0; i <= 108233; i += 1000) {
     String selectSql =
         "SELECT DISTINCT urllong"
             + " FROM final_s_t_l2"
             + " ORDER BY urllong"
             + " limit "
             + i
             + ",1000;";
     System.out.println("############" + i + "###########");
     selectData(selectSql);
   }
   finished();
 }