ORACLE 根据日期范围自动日期table

--根据日期范围

SELECT LEVEL + to_date('20120821', 'yyyy-mm-dd') - 1
  FROM dual
CONNECT BY LEVEL < to_date('20120831', 'yyyy-mm-dd') - to_date('20120821', 'yyyy-mm-dd') + 2;

--根据数据范围
SELECT LEVEL + 1-1
  FROM dual
CONNECT BY LEVEL <= 10;