sql 生成一段时间的所有日期

select * from (SELECT INST_CODE
from DC_R_MEDICAL_INSTITUTION_BASE
where HEALTH_INST_TYPE_CODE in ('A100','B100','D600')),   

(select
 to_char(trunc(to_date('2018/11/13','yyyy/MM/dd') -15 + Rownum,'dd'), 'yyyy/MM/dd')  as monthlist
from dual
connect by rownum <= 6  )
    order by monthlist