查看一个区间内的所有时间:
select (to_date('20180708', ' yyyyMMdd ') + rownum - 1) as DATE_TIME
from all_objects
where rownum <= (to_date('20190823', ' yyyyMMdd') -
to_date('20180708', 'yyyyMMdd') + 1);
select (to_date('20180708', ' yyyyMMdd ') + rownum - 1) as DATE_TIME
from all_objects
where rownum <= (to_date('20190823', ' yyyyMMdd') -
to_date('20180708', 'yyyyMMdd') + 1);