Question

我是SQL数据透视查询的新手，并且陷入了Pivot of Pivot结果。

我有一个名为“ExampleSales”的表。我想找到每月（甚至每天，每周，每月，每年）员工和项目明智的销售。下面是表格，示例数据和第一级数据透视的示例。

CREATE TABLE [dbo].[ExampleSales](
    [SalesId] [int] IDENTITY(1,1) NOT NULL,
    [ItemCode] [varchar](50) NOT NULL,
    [EmployeeName] [varchar](250) NOT NULL,
    [Amount] [decimal](18, 2) NOT NULL,
    [SalesDate] [datetime2](7) NOT NULL,
 CONSTRAINT [PK_ExampleSales] PRIMARY KEY CLUSTERED 
(
    [SalesId] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]

示例数据：

SET IDENTITY_INSERT [dbo].[ExampleSales] ON 

GO
INSERT [dbo].[ExampleSales] ([SalesId], [ItemCode], [EmployeeName], [Amount],  [SalesDate]) VALUES (1, N'A1', N'Michel John', CAST(120.00 AS Decimal(18, 2)), CAST(0x07207D922A5ADF3C0B AS DateTime2))
GO
INSERT [dbo].[ExampleSales] ([SalesId], [ItemCode], [EmployeeName], [Amount],  [SalesDate]) VALUES (2, N'A1', N'Mark Ven', CAST(50.00 AS Decimal(18, 2)), CAST(0x07D07748385AF33C0B AS DateTime2))
GO
INSERT [dbo].[ExampleSales] ([SalesId], [ItemCode], [EmployeeName], [Amount],  [SalesDate]) VALUES (3, N'A2', N'Michel John', CAST(50.00 AS Decimal(18, 2)), CAST(0x07F05983465A023D0B AS DateTime2))
GO
INSERT [dbo].[ExampleSales] ([SalesId], [ItemCode], [EmployeeName], [Amount],  [SalesDate]) VALUES (4, N'A2', N'Mark Ven', CAST(150.00 AS Decimal(18, 2)), CAST(0x073054DF505AFD3C0B AS DateTime2))
GO
INSERT [dbo].[ExampleSales] ([SalesId], [ItemCode], [EmployeeName], [Amount],  [SalesDate]) VALUES (5, N'A3', N'Michel John', CAST(23.00 AS Decimal(18, 2)), CAST(0x0730AC235F5ADF3C0B AS DateTime2))
GO
INSERT [dbo].[ExampleSales] ([SalesId], [ItemCode], [EmployeeName], [Amount],  [SalesDate]) VALUES (6, N'A3', N'Mark Ven', CAST(56.00 AS Decimal(18, 2)), CAST(0x07F02161695AF33C0B AS DateTime2))
GO
INSERT [dbo].[ExampleSales] ([SalesId], [ItemCode], [EmployeeName], [Amount],  [SalesDate]) VALUES (7, N'A4', N'Michel John', CAST(54.00 AS Decimal(18, 2)), CAST(0x07C09BB2825A023D0B AS DateTime2))
GO
INSERT [dbo].[ExampleSales] ([SalesId], [ItemCode], [EmployeeName], [Amount],  [SalesDate]) VALUES (8, N'A4', N'Mark Ven', CAST(100.00 AS Decimal(18, 2)), CAST(0x0750622E925ADB3C0B AS DateTime2))
GO
SET IDENTITY_INSERT [dbo].[ExampleSales] OFF
GO

第一级数据透视查询

SELECT
DateName( month , DateAdd( month , DATEPART(m,SalesDate)  , 0 ) - 1 ) AS 'month',EmployeeName,[A1] ,[A2],[A3],[A4]
    FROM
        (SELECT 
                Salesid,SalesDate,EmployeeName,ItemCode
         FROM 
                ExampleSales
        ) AS SourceTable
    PIVOT
    (
        COUNT(Salesid) 
        FOR ItemCode IN([A1] ,[A2],[A3],[A4])
    ) AS PivotTable

Output of my first pivot query is

现在，我被困在这里。我希望下一级别如下。

Need covert first pivot to next level pivot as below

Answer 1

您可以按照以下方式执行此操作：

O(n)

结果是：

Answer 2

对于动态的：

使用如下：

DECLARE @cols AS NVARCHAR(MAX),
    @query  AS NVARCHAR(MAX);

SET @cols = STUFF((SELECT distinct ',' + QUOTENAME(concat(c.employeename,'(',c.itemcode,')')) 
            FROM examplesales c
            FOR XML PATH(''), TYPE
            ).value('.', 'NVARCHAR(MAX)') 
        ,1,1,'')

set @query = 'select * from
(select salesid,datename(month,salesdate) as mn,concat(employeename,''('',itemcode,'')'') as items from examplesales
) as S
pivot
(
count(salesid)
for items in  ('+@cols+') ) p '


execute(@query)

SQL Server - 枢轴的枢轴

2 个答案: