oracle 分页，oracle 随机数

oracle分页
select * from (
  select rownum row_num,t.* from (
    select * from t_
) t) where row_num>((显示页数 - 1) * 每页条数) and row_num<=(显示页数 * 每页条数)
order by

oracle获取随机数
select dbms_random.value from dual;