oracle分頁語句

1.根據rowid來分

select * from t_xiaoxi where rowid in(select rid from (select rownum rn,rid from(select rowid rid,cid from

t_xiaoxi  order by cid desc) where rownum<10000) where rn>9980) order by cid desc;

2.按分析函式來分

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

執行時間1.01秒

3.按rownum來分

select * from(select t.*,rownum rn from(select * from t_xiaoxi order by cid desc) t where rownum<10000) where rn>9980;

其中t_xiaoxi為表名稱，cid為表的關鍵字段，取按cid降序排序後的第9981-9999條記錄，t_xiaoxi表有70000多條記錄

個人感覺1的效率最好，3次之，2最差

refurl:

總結：oracle也可以用rownum>a && rownum上面3種不僅都實現了，而且還考慮了效率問題。

oracle 分頁語句

1.根據rowid來分 select from t xiaoxi where rowid in select rid from select rownum rn,rid from select rowid rid,cid from t xiaoxi order by cid desc where r...

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