1.總結Oracle 、sqlserver和mysql中查詢10-20條記錄的寫法
1：select * from (select rownum rn ,* from 表名 wher rownum<20) a
where a.rn>10
2：select * from 表名 where rownum<20
minus
select * from 表名 where rownum<10
二：SqlServer數據庫寫法：
1:select top 20 * from tablename where id not?exists (select top 10 * from tablename)//前20條記錄再過濾掉前10條
2:select top10 * from (select top 20 * from order by column) order by column desc//子查詢中取20條倒序，然后從子查詢中取前10條
三：mysql的寫法：
select * from tablename where LIMIT 9,10