这个sql求和语句怎么写 通过一个语句,只让其中的前三个月求和,表如下:YEAR MONTH TOTAL2008 1 10002008 2 10002008 3 20002008 4 20002008 5 30002008 6 3000谢谢 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 sum(total) from (select *,rn=row_number()over(order by month) from tb) where rn<=3 select sum(total) from(select top 3 * from 表 order by month)a select sum(total) from (select *,rn=row_number()over(order by month) from tb) t where rn<=3select sum(total) from (top 3 * from tb) t select sum(total) from tb where month <= 3??? select sum(total) from (select *,rn=row_number()over(order by month) from tb) where rn<=3 一个 insert的sql语句 SQL 多表关联 中,左表右表指哪些表? 关于时间 触发器的 insert数据竟然会变 dtexec 调用包出错 update问题~~ 哪位大哥做过c#+sql2000的全文检索啊?能给个例子否 用ADO如何执行下边的存储过程??!!! 扩展存储过程的参数传递问题,100分赠送!!! 请问如何从客户端访问远程服务器上的Access数据库(VB语言)??? exists与 not exists 执行效率一样吗?会不会 exists会快些 如何模糊查询数据库中表名字含有特定字符的表
select *,rn=row_number()over(order by month) from tb
) where rn<=3
select sum(total) from
(select top 3 * from 表 order by month)a
select *,rn=row_number()over(order by month) from tb
) t where rn<=3
select sum(total) from (
top 3 * from tb
) t
select sum(total) from tb where month <= 3???
select *,rn=row_number()over(order by month) from tb
) where rn<=3