Oracle查询任意时间段内的所有日期,无需建表

select date'2017-04-25' + (rownum - 1) dt from dual connect by rownum <= (date'2017-05-05' - date'2017-04-25' + 1)

运行结果：

2017-04-25 2017-04-26 2017-04-27 2017-04-28 2017-04-29 2017-04-30 2017-05-01 2017-05-02 2017-05-03 2017-05-04 2017-05-05