1. 按照tname排序,查询前10条数据
select id,tname from (select id,name from student order by tname) where rownum<=10 ;
2. 查询第100-150条记录
1. 最佳选择：利用分析函数
row_number() over ( partition by col1 order by col2 )
比如想取出100-150条记录,按照tname排序
select tname,tabtype from ( select tname,tabtype,row_number() over ( order by tname ) rn from tab ) where rn between 100 and 150;
2. 使用rownum 虚列
select tname,tabtype from ( select tname,tabtype,rownum rn from tab where rownum <= 150 ) where rn >= 100;