oracle 分页语句

1.Oracle分页查询：
SELECT * FROM 
( SELECT A.*, ROWNUM rn  FROM (SELECT * FROM tableName) A  WHERE ROWNUM <= 10  )
WHERE rn >= 1;

这个分页比下面的执行时间少，效率高。

2.select * from
(select B.*,rownum rn from core_user B)
where rn between 1 and 10