select *，row_number () over (partition by column1 order by column2) as n from tablename 在上面语法中： PARTITION BY子句将结果集划分为分区。

阿里云优惠券 先领券再下单 这篇文章主要介绍了SQL Server中row_number的用法详解，文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定 ...

LINQ in .NET returning duplicate rows from a working SQL view [SOLVED] analysis Jun 18, 2013 3 mins Enterprise Applications ...

When you use SELECT in a PL/SQL block, it’s important to make sure that exactly one row will always be returned by your query. If more than one row is returned, the TOO_MANY_ROWS exception occurs.

"Discussion on selecting a ""weighted"" row randomly in MS SQL 2000 for corporate intranet tips section." ...

Coming up to speed with other database management systems and Microsoft's own SQL Azure, row level security is now available in SQL Server.