PIVOT with MONTH（）

Question

如何使用日期作为月份来旋转列？

示例：

数据：

|-----------------------------------|
| def_kstnr | def_zeit | def_datum  |
|-----------------------------------|
| 100       | 3.2      | 2011-11-02 |
| 110       | 2.8      | 2011-02-03 |
| 120       | 5.4      | 2011-11-04 |
| 130       | 2.4      | 2011-08-05 |
| 140       | 4.9      | 2011-09-06 |
| 150       | 1.5      | 2011-10-07 |
| 160       | 2.6      | 2011-12-08 |
|-----------------------------------|

查询：

SELECT
    def_kstnr,
    [1] AS Jan,
    [2] AS Feb,
    [3] AS Mrz,
    [4] AS Apr,
    [5] AS Mai,
    [6] AS Jun,
    [7] AS Jul,
    [8] AS Aug,
    [9] AS Sep,
    [10] AS Okt,
    [11] AS Nov,
    [12] AS Dez
FROM
    dbo.def
PIVOT
(
    SUM(def_zeit)
    FOR MONTH(def_datum)
    IN ( [1], [2], [3], [4], [5], [6], [7], [8], [9], [10], [11], [12] )
) AS pvtMonth
GROUP BY
    dbo.def.def_kstnr,
    MONTH(def_datum)

我收到此错误：

  

'（'。

附近的语法不正确

（与“FOR MONTH（def_datum）”排成一行）

结果应如下所示：

|-----------------------------------------------------------------------------------|
| def_kstnr | Jan | Feb | Mrz | Apr | Mai | Jun | Jul | Aug | Sep | Okt | Nov | Dez |
|-----------------------------------------------------------------------------------|
| 100       |     |     |     |     |     |     |     |     |     |     | 3.2 |     |
| 110       |     | 2.8 |     |     |     |     |     |     |     |     |     |     |
...
|-----------------------------------------------------------------------------------|

谢谢：）

Answer 1

如果您将月份功能移动到之前的源表中，则PIVOT可以正常工作。注意我不认为你需要在支点之后对事物进行分组。

SELECT
    def_kstnr,
    [1] AS Jan,
    [2] AS Feb,
    [3] AS Mrz,
    [4] AS Apr,
    [5] AS Mai,
    [6] AS Jun,
    [7] AS Jul,
    [8] AS Aug,
    [9] AS Sep,
    [10] AS Okt,
    [11] AS Nov,
    [12] AS Dez
FROM
(Select 
def_kstnr,
def_zeit,
 MONTH(def_datum) as TMonth
  from
    dbo.def) source
PIVOT
(
    SUM(def_zeit)
    FOR TMonth
    IN ( [1], [2], [3], [4], [5], [6], [7], [8], [9], [10], [11], [12] )
) AS pvtMonth

Answer 2

--Create Temporary Sales Table
CREATE TABLE #Sales
(SalesId INT IDENTITY(1,1), SalesDate DateTime)
GO
--Populate 1000 Sample Sales Records With 
--Random past 0-798 days as sales date
INSERT INTO #Sales(SalesDate)
VALUES(DATEADD(dd, - CONVERT(INT, (798+1)*RAND()),GETDATE()))
GO 1000

演示1：获取每月数据

SELECT YEAR(SalesDate) [Year], MONTH(SalesDate) [Month], 
 DATENAME(MONTH,SalesDate) [Month Name], COUNT(1) [Sales Count]
FROM #Sales
GROUP BY YEAR(SalesDate), MONTH(SalesDate), 
 DATENAME(MONTH, SalesDate)
ORDER BY 1,2

结果：-

演示2：使用PIVOT获取每月数据

SELECT *
FROM (SELECT YEAR(SalesDate) [Year], 
       DATENAME(MONTH, SalesDate) [Month], 
       COUNT(1) [Sales Count]
      FROM #Sales
      GROUP BY YEAR(SalesDate), 
      DATENAME(MONTH, SalesDate)) AS MontlySalesData
PIVOT( SUM([Sales Count])   
    FOR Month IN ([January],[February],[March],[April],[May],
    [June],[July],[August],[September],[October],[November],
    [December])) AS MNamePivot

结果：-