將PIVOT表與SQL Server 2008 R2一起使用

Question

我遇到了一個我無法解決的問題，並嘗試了一切。 希望我能在這里得到答案。

我表中的數據如下

Id Month Val1 Val2 Val3
1  Jan   70   80   90
2  Jan   12   13   15
3  Feb   12   67   99
4  March 14   15   17.1

從以下結構我想基於列val1轉動數據，所以我的輸出將如下所示：

Jan Jan Feb March
70  12  12  14

Answer 1

你需要使用我想過的動態SQL（除非你的列保持靜態）

需要執行的查詢是：

SELECT  [Jan] = [Jan1], 
        [Jan] = [Jan2], 
        [Feb] = [Feb1], 
        [March] = [March1]
FROM    (   SELECT  [PivotColumn] = [Month] + CONVERT(VARCHAR(10), ROW_NUMBER() OVER(PARTITION BY [Month] ORDER BY ID)), 
                    Val1
            FROM    T
        ) t
        PIVOT
        (   MAX(Val1)
            FOR [PivotColumn] IN ([Jan1], [Jan2], [Feb1], [March1])
        ) pvt

雖然我不確定為什么會這樣

Jan Jan Feb March
70  12  12  14

並不是

Jan Jan Feb March
12  70  12  14

所以你可能需要修改ROW_NUMBER函數中的ORDER BY 。

要動態構建它，您可以使用：

-- CREATE SAMPLE TABLE AND INSERT DATA
CREATE TABLE #T (ID INT, Month VARCHAR(10), Val1 INT, Val2 INT, Val3 DECIMAL(5, 1));
INSERT #T VALUES (1, 'Jan', 70, 80, 90), (2, 'Jan', 12, 13, 15), (3, 'Feb', 12, 67, 99), (4, 'March', 14, 15, 17.1);

-- DECLARE VARIABLES TO STORE THE COLUMN NAMES
DECLARE @PivotList NVARCHAR(MAX) = '',
        @ColumnList NVARCHAR(MAX) = '';

-- HERE USE ROW_NUMBER() TO UNIQUELY IDENTIFY VALUES FOR MONTHS 
-- THIS MEANS JAN: 70 AND JAN: 12 CAN BE IDENTIFIED SEPARATELY LATER, BUT RETAIN THE DUPLICATE COLUMN NAME [Jan]
SELECT  @ColumnList = @ColumnList + ', ' + QUOTENAME([Month]) + ' = ' + QUOTENAME([Month] + CONVERT(VARCHAR(10), ROW_NUMBER() OVER(PARTITION BY [Month] ORDER BY ID))),
        @PivotList = @PivotList + ', ' + QUOTENAME([Month] + CONVERT(VARCHAR(10), ROW_NUMBER() OVER(PARTITION BY [Month] ORDER BY ID)))
FROM    #T
ORDER BY ID;

DECLARE @SQL NVARCHAR(MAX) = 'SELECT ' + STUFF(@ColumnList, 1, 2, '') + '
                            FROM    (   SELECT  [PivotColumn] = [Month] + CONVERT(VARCHAR(10), ROW_NUMBER() OVER(PARTITION BY [Month] ORDER BY ID)), 
                                                Val1
                                        FROM    #T
                                    ) t
                                    PIVOT
                                    (   MAX(Val1)
                                        FOR [PivotColumn] IN (' + STUFF(@PivotList, 1, 2, '') + ')
                                    ) pvt';

EXECUTE SP_EXECUTESQL @SQL;

DROP TABLE #T;

同樣， ROW_NUMBER中的任何更改都需要反映在生成列名稱和數據透視表列表的查詢中的ORDER BY子句中：

SELECT  @ColumnList = @ColumnList + ', ' + QUOTENAME([Month]) + ' = ' + QUOTENAME([Month] + CONVERT(VARCHAR(10), ROW_NUMBER() OVER(PARTITION BY [Month] ORDER BY ID))),
        @PivotList = @PivotList + ', ' + QUOTENAME([Month] + CONVERT(VARCHAR(10), ROW_NUMBER() OVER(PARTITION BY [Month] ORDER BY ID)))
FROM    #T
ORDER BY ID;

Answer 2

這對我有用：

SELECT * FROM
(select COUNT(isnull(intFileStatus,0)) as FileCount , case cast(intfilestatus as nvarchar(25)) when '0' then 'Not Allocated'  when '1' then 'Assigned' when '2' then 'Pending' when '3'  then 'Send For Qc'  when '4' then 'Allocated To Qc' when '5' then 'Finish Qc'  when '7' then 'Delivered'  else cast(isnull(intFileStatus,0) as nvarchar (25)) end FileStatusfrom dbo.tblLPO_FileDetails   group by intFileStatus ) AS original
PIVOT 
(
    MIN(FileCount) FOR [FileStatus] IN ([Not Allocated], [Assigned], [Pending],[Send For Qc],[Allocated To Qc],[Finish Qc],[Delivered])
) AS PivotTable

嘗試一下..