作者:WingKeii- | 来源:互联网 | 2018-07-15 01:27
sqlserver2005有关键字ntile(x)和over(partitionby..orderby..)子句配合.
sqlserver2005有关键字ntile(x)和over(partition by.. order by..)子句配合.
比如获取每个表的前10%个字段。
代码如下:
select id , name , colid , rn from (
select * , rn = ntile (10 )
over (partition by id order by colorder )
from syscolumns )t where rn = 1