select to_char(sysdate, 'yyyy"年"mm"月"dd"日" hh24"时"mi"分"ss"秒"') as date1,
to_char(sysdate, 'yyyy"年"monthdd"日" hh"时"mi"分"ss"秒"') as date2,
to_char(to_date('20150109', 'yyyy-mm-dd'), 'yyyy"年"monthdd"日"') as date3,
to_char(sysdate, 'fmyyyy"年"mm"月"dd"日" hh24"时"mi"分"ss"秒"') as date4
from dual;
参考文章: Oracle中的时间函数用法(to_date、to_char) (总结) - chenxiangxiang - 博客园 (cnblogs.com) blog.csdn.net/wikiskys/ar…