ORACLE 、mysql 分页SQL语句

oracle:

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

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;

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

 

 

mysql:

SELECT * FROM TT LIMIT 1,20
SELECT * FROM TT LIMIT 21,30
/*
如果你是几千上万数据，就直接使用mysql自带的函数 limit的普通用法就ok了，如果是100万以上的数据，可能就要讲方法了，下面我们来做个百万级数据的分页查询语句.
mysql> select * from news where id>=(select id from news limit 490000,1) limit 10;    //0.18 sec  //很 明显,这 种方式胜出 .
mysql> select * from news limit 490000,10  //0.22 sec;
*/