在分区- MSSQL MSSQL中选择Min ID

Question

我想选择分区的最小ID。有点像dense_rank的工作方式，我想要一个与每个解析关联的唯一数字，但是我希望这个麻木是分区中最小的主键。这是我所追求的一个例子。

USE AdventureWorks2012;  
GO  
SELECT '276 or 289 depending on what partition' as 'Min_BusinessEntityID'
  ,s.BusinessEntityID
  ,p.LastName
  ,s.SalesYTD
  ,a.PostalCode
 FROM Sales.SalesPerson AS s   
INNER JOIN Person.Person AS p   
    ON s.BusinessEntityID = p.BusinessEntityID  
INNER JOIN Person.Address AS a   
    ON a.AddressID = p.BusinessEntityID  
WHERE TerritoryID IS NOT NULL   
AND SalesYTD <> 0  
ORDER BY PostalCode, SalesYTD DESC

结果集示例

Answer 1

Server 最小命令接受OVER()子句：

SELECT MIN(s.BusinessEntityID) OVER (PARTITION BY TerritoryID) AS Min_BusinessEntityID
FROM ...