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  • Pivot

    测试数据

    Create Table TPivot
    (
        ID int identity(1,1),
        ProductName Varchar(20),
        SalesMonth int,
        SalesCount int
    )
    
    insert into TPivot Values
    ('Bicycle',1,1),
    ('Shoes',2,2),
    ('Clothes',3,3),
    ('Books',4,4),
    ('Medicine',5,5),
    ('Drinks',6,6),
    ('Shoes',7,7),
    ('Books',1,2),
    ('Bicycle',1,3),
    ('Medicine',1,4),
    ('Clothes',1,5),
    ('Mobile Phone',1,6),
    ('Books',1,7),
    ('Medicine',1,8),
    ('Shoes',1,9),
    ('Bicycle',2,10)

    数据

    Pivot语法

    /****
    SELECT 非透视列,
                 [透视列 1] AS '列名1',
                 [透视列 2] AS '列名2',
                 [透视列 3] AS '列名3'
    FROM (
            -- 源数据
            SELECT 非透视列,
                   透视列值的来源列,
                   需要聚合的值
            FROM 表
         )AS 别名
    PIVOT
         (
            SUM(需要聚合的值)
            FOR 透视列值的来源列 IN ([透视列 1],[透视列 2],[透视列 3])
         )AS 别名
    ****/

    代码

    Select ProductName,
    Isnull([1],0) As '1',
    Isnull([2],0) As '2',
    Isnull([3],0) As '3',
    Isnull([4],0) As '4',
    Isnull([5],0) As '5',
    Isnull([6],0) As '6'
    From 
    (
        Select ProductName,SalesMonth, SalesCount From TPivot
    ) As Sales
    Pivot
    (
        Sum(SalesCount)
        For SalesMonth In ([1],[2],[3],[4],[5],[6])
    ) As PivotBL

    效果

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  • 原文地址:https://www.cnblogs.com/Niko12230/p/6370334.html
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