Oracle 查询两个时间段内的所有日期列表

1、查询某时间段内日期列表 

select level,to_char(to_date('2013-12-31','yyyy-mm-dd')+level-1,'yyyy-mm-dd') as date_time  
from dual 
connect by level <=to_date('2014-01-03','yyyy-mm-dd')-to_date('2013-12-31','yyyy-mm-dd')+1 

2、查询前两个月日期列表 

SELECT T.DATE_ID FROM ( 
select to_char(ADD_MONTHS( TO_DATE(to_char(sysdate-1,'yyyyMMdd'),'yyyyMMdd' ) ,- 2)+ rownum,'yyyyMMdd' ) DATE_ID 
from dual 
connect by rownum <=to_date(to_char(sysdate-1,'yyyyMMdd'),'yyyyMMdd')-ADD_MONTHS( TO_DATE(to_char(sysdate-1,'yyyyMMdd'),'YYYYMMDD' ) ,- 2 ) 
) t order by DATE_ID desc 

3.查询月份列表 

SELECT TO_CHAR(ADD_MONTHS(TO_DATE('2014-10', 'yyyy-MM'), ROWNUM - 1), 
               'yyyyMM') as monthlist 
  FROM DUAL 
CONNECT BY ROWNUM <= 
           months_between(to_date('2015-06', 'yyyy-MM'), 
                          to_date('2014-10', 'yyyy-MM')) + 1 

4.年份列表 

SELECT 
    TO_CHAR( ADD_MONTHS( TO_DATE( '2014-10' ,'yyyy-MM' ) ,( ROWNUM - 1 ) * 12 ) ,'yyyy' ) AS yearlist 
FROM 
    DUAL CONNECT BY ROWNUM <= months_between( 
        to_date( 
            '2015-06' , 
            'yyyy-MM' 
        ) , 
        to_date( 
            '2014-10' , 
            'yyyy-MM' 
        ) 
    ) / 12 + 1