取消透视表，其中包含多个列和动态列名

Question

我试图取消有多个行和列的表。每行需要引出到具有特定列的2行，并且列名需要重命名，并且需要根据所选列添加新列！

我包括示例数据之前和之后以及用于设置数据的脚本。

 CREATE TABLE #tmpProducts (
        ProductId INT,
        ProductName nVARCHAR(100),
        B2B_GrossRevenue DECIMAL(10,2),
        B2B_DirectCost DECIMAL(10,2),
        B2B_NetRevenue DECIMAL(10,2),
        B2C_GrossRevenue DECIMAL(10,2),
        B2C_DirectCost DECIMAL(10,2),
        B2C_NetRevenue DECIMAL(10,2)
    )

    INSERT INTO #tmpProducts SELECT 1, 'Product1',1545.00,406.25,1138.75,195.00,35.10,159.90
    INSERT INTO #tmpProducts SELECT 2, 'Product2',902.00,189.00,713.00,3280.00,590.40,2689.60
    INSERT INTO #tmpProducts SELECT 3, 'Product3',15665.00,3988.39,11676.61,6247.00,1124.46,5122.54
    INSERT INTO #tmpProducts SELECT 4, 'Product4',736.00,196.16,539.84,2395.00,431.10,1963.90

    SELECT * FROM #tmpProducts
    DROP TABLE #tmpProducts

    CREATE TABLE #tmpProducts2 (
        ProductId INT,
        ProductName nVARCHAR(100),
        [Type] nVARCHAR(3),
        GrossRevenue DECIMAL(10,2),
        DirectCost DECIMAL(10,2),
        NetRevenue DECIMAL(10,2)
    )

    INSERT INTO #tmpProducts2 SELECT 1, 'Product1','B2B',1545.00,406.25,1138.75
    INSERT INTO #tmpProducts2 SELECT 1, 'Product1','B2C',195.00,35.10,159.90
    INSERT INTO #tmpProducts2 SELECT 2, 'Product2','B2B',902.00,189.00,713.00
    INSERT INTO #tmpProducts2 SELECT 2, 'Product2','B2C',3280.00,590.40,2689.60
    INSERT INTO #tmpProducts2 SELECT 3, 'Product3','B2B',15665.00,3988.39,11676.61
    INSERT INTO #tmpProducts2 SELECT 3, 'Product3','B2C',6247.00,1124.46,5122.54
    INSERT INTO #tmpProducts2 SELECT 4, 'Product4','B2B',736.00,196.16,539.84
    INSERT INTO #tmpProducts2 SELECT 4, 'Product4','B2C',2395.00,431.10,1963.90

    SELECT * FROM #tmpProducts2
    DROP TABLE #tmpProducts2

我已经尝试过了，但是我无法通过第二列，而且我不确定如何添加带有特定文本的新列（可能是动态sql，但如果可能的话，尽量避免这种情况）

这是我尝试的开始，我们将不胜感激。

SELECT  ProductId, ProductName,GrossRevenue
        FROM    (
                    SELECT ProductId, ProductName, B2B_GrossRevenue,B2C_GrossRevenue FROM #tmpProducts
                ) as t
            UNPIVOT ( GrossRevenue for test IN (B2B_GrossRevenue,B2C_GrossRevenue)) AS unpvt

Answer 1

你只是保持不懈

    SELECT  ProductId,ProductName, Substring(col1,1,3) as type,  GrossRevenue, DirectCost, NetRevenue
    FROM    ( 
        SELECT * FROM #tmpProducts 
    ) as t 
    UNPIVOT ( GrossRevenue for col1 IN (B2B_GrossRevenue,B2C_GrossRevenue)) AS unpvt 
    unpivot ( DirectCost for col2 in (B2b_DirectCost, B2c_DirectCost)) up2
    unpivot ( NetRevenue for col3 in (B2b_NetRevenue, B2c_NetRevenue)) up3
where SUBSTRING(col1,1,3)=SUBSTRING(col2,1,3)
and  SUBSTRING(col1,1,3)=SUBSTRING(col3,1,3)

并加入col列以滤除不匹配项