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  • Max Function

    USE [Infosys_Connie]
    GO
    /****** Object:  Table [dbo].[KNA1]    Script Date: 12/21/2009 14:52:58 ******/
    SET ANSI_NULLS ON
    GO
    SET QUOTED_IDENTIFIER ON
    GO
    CREATE TABLE [dbo].[KNA1](
     [UID] [int] NOT NULL,
     [SALARY] [int] NULL,
     [DEPARMENT] [nvarchar](50) COLLATE Chinese_PRC_CI_AS NULL
    ) ON [PRIMARY]

    /*
    INSERT INTO [KNA1] VALUES (1,100,'RETEL');
    INSERT INTO [KNA1] VALUES (2,200,'RETEL');
    INSERT INTO [KNA1] VALUES (3,300,'RETEL');
    INSERT INTO [KNA1] VALUES (4,100,'EUS');
    INSERT INTO [KNA1] VALUES (5,400,'EUS');
    INSERT INTO [KNA1] VALUES (6,100,'EDS');
    INSERT INTO [KNA1] VALUES (7,100,'EDS');
    INSERT INTO [KNA1] VALUES (8,50,'EDS');
    */

    SELECT * FROM KNA1 ORDER BY DEPARMENT
    GO
    --SELECT DEPARMENT,MAX(SALARY) AS M_SALARY FROM KNA1 GROUP BY DEPARMENT ORDER BY DEPARMENT
    --GO

    SELECT A.UID,A.DEPARMENT,B.M_SALARY FROM KNA1 A
    INNER JOIN
    (SELECT DEPARMENT,MAX(SALARY) AS M_SALARY FROM KNA1 GROUP BY DEPARMENT) AS B
    ON A.DEPARMENT=B.DEPARMENT AND A.SALARY=B.M_SALARY
    GO

    USE AdventureWorks;
    GO
    select
    c.* from
    (
    SELECT i.ProductID, p.Name, i.LocationID, i.Quantity, RANK() OVER (PARTITION BY i.LocationID order by i.Quantity) as RANK
    FROM Production.ProductInventory i JOIN Production.Product p
    ON i.ProductID = p.ProductID
    ORDER BY p.Name
    ) as c
    GO

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  • 原文地址:https://www.cnblogs.com/zhangchenliang/p/1636219.html
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