oracle自定义的三种分页

以前用oracle 分页都不是自己写的，所以今天专门学了下怎么用oracle分页 其实也是参考别人的语句，自己按照学习写

--rowid分页

select * from (select rownum rn,t2.* from (select t1.*,rowid rid from temp t1) t2 where rownum <= 1000) where rn >=800;

--rownum分页

select * from (select rownum rn,t1.* from (select * from student) t1 where rownum<=10) where rn >= 5;

--row_number函数分页

select * from

(select t.* ,row_number() over (order by xh desc ) rk from student t)

where rk <=10 and rk >=5;

--三种方式比较

select rownum rn,t1.* from (select * from temp) t1 where rownum<=1000 minus select rownum rn,t1.* from (select * from temp) t1 where rownum<=800;

set timing on;

select * from (select rownum rn,t1.* from (select * from temp) t1 where rownum<=1000) where rn >= 800;

select * from (select rownum rn,t2.* from (select t1.*,rowid rid from temp t1) t2 where rownum <= 1000) where rn >=800;

我是参考别人的语句，希望可以帮到大家。