以Orcle为后台数据库,以下SQL语句出现了错误: SELECT [column_list], ROWNUM FROM (SELECT [column_list] FROM table ORDER BY Top-N_column) WHERE ROWNUM <= N 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 select * from Xnews where type='2' and rownum <=3 order by time desc select * from (select * from xnews where type='2' order by time desc) where rownum <=3; select * from (select rownum rn,a.* from Xnews a where type='2' order by time desc)where rn<=3 oracle 临时变量赋值问题 删除undo表空间数据库启动报ORA-01157 和ORA-01110 oracle9i定义游标麻烦看下哪儿错了 一个包中有多个需要返回结果集的存储过程的输出参数是引用光标类型的问题 update table set a='' where a is null为什么更新后a还是null那? 请教一个sql语句写法 oracle 7.3 tnslsnr.exe应用程序出错 声卡显卡驱动问题? Enterprise Manager Console和SQL Plus的问题 请问还有什么人气较旺的oracle站点? DISTINCT in SQL ? sql语句建树
(select rownum rn,a.* from Xnews a where type='2' order by time desc)
where rn<=3