oracle 分页~

1.根据ROWID来分

select * from t_xiaoxi where rowid in(select rid from (select rownum rn,rid from(select rowid rid,cid fromt_xiaoxi  order by cid desc) where rownum<10000) where rn>9980) order by cid desc;

执行时间0.03秒

2.按分析函数来分

select * from (select t.*,row_number() over(order by cid desc) rk from t_xiaoxi t) where rk<10000 and rk>9980;
执行时间1.01秒

3.按ROWNUM来分

select * from(select t.*,rownum rn from(select * from t_xiaoxi order by cid desc) t where rownum<10000) wherern>9980;执行时间0.1秒