SQL Server - ピボットのピボット

Question

SQLピボットクエリを初めて使用し、ピボットのピボット結果に固執しました。

"ExampleSales"という名前のテーブルが1つあります。私は毎月（または毎日、毎週、毎月、毎年）の従業員とアイテムの賢明な販売を探したい。以下は、テーブル、サンプルデータ、および第1レベルのピボットの例です。

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] 

サンプルデータ：

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1レベルのピボットクエリさて、私はここで立ち往生しています

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

。私は次のように次のレベルを出したい。次のように

Need covert first pivot to next level pivot as below

Answer 1

ダイナミック1の場合

：

使用次のように

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) 

Answer 2

あなたはこれを行うことができます。

select * from 
(select salesid,datename(month,salesdate) as mn,concat(employeename,'(',itemcode,')') as items from examplesales 
) as S 
pivot 
(
count(salesid) 
for items in ([Michel John(A1)],[Mark Ven(A1)],[Michel John(A2)],[Mark Ven(A2)], 
          [Michel John(A3)],[Mark Ven(A3)],[Michel John(A4)],[Mark Ven(A4)]) 
          ) p 

結果は次のとおりです。