选择每年的最佳记录

我正在尝试回顾我的 sql 技能，现在我正在尝试在 Northwinddb 上运行一个简单的查询来向我显示每年的顶级客户，但是一旦我使用 TOP 函数，无论我在什么情况下，都只会显示 1 条记录分区依据，这是我的 T-SQL 代码

SELECT DISTINCT TOP 1 C.CompanyName
, YEAR(O.OrderDate) AS Year
, SUM(Quantity) OVER(PARTITION BY C.CompanyName, YEAR(O.OrderDate)) AS Total
FROM Customers C JOIN Orders O
    ON C.CustomerID = O.CustomerID JOIN [Order Details] OD
    ON O.OrderID = OD.OrderID

您可以在 SQL Server 2008 中更紧凑地执行此操作，如下所示：

select top (1) with ties
  C.CompanyName,
  Year(O.OrderDate) as Yr,
  sum(OD.Quantity) as Total
from Orders as O
join Customers as C on C.CustomerID = O.CustomerID
join "Order Details" as OD on OD.OrderID = O.OrderID
group by C.CompanyName, Year(O.OrderDate)
order by 
  row_number() over (
    partition by Year(O.OrderDate)
    order by sum(OD.Quantity) desc
  );