有一排四列透視表

Question

-- Pivot table with one row and four columns 

SELECT 'Values' tValues, 
    ID,Name,ValueID,Value FROM (

     Select ID,Name,ValueID,Value FROM Table WHERE OptionID = 1000000 

    ) AS SourceTable 

    PIVOT ( 

     COUNT(tValues) 
     FOR tValues IN (ID,Attribute,ValueID,Value) 

    ) AS PivotTable; 

我要去關的例子在Microsoft.com：http://msdn.microsoft.com/en-us/library/ms177410.aspx

但也有繞樞軸我真的不明白一些事情，所以不要當你在上面的代碼中看到它時會感到驚訝，例如COUNT(tValues)，我不知道這是爲什麼，通過從微軟的例子來看，它似乎總是某種數值，所以我想我會嘗試它看它是否會返回一些東西，但它返回的是一個錯誤。總之，如果有人在那裏可以分享爲什麼這個查詢不起作用，並且可能解釋什麼FOR以上的數字值用於？

的Table containts行的x量，四列，所以它看起來是這樣的：

ID | Name | ValueID | Value 

100 | Color | 10000 | Black 
101 | Size | 10005 | Large 

輸出應該是這樣的：

Name_100 | Color | Name_101 | Size | 

10000  | Black | 10005  | Large | 

Answer 1

也許是這樣的。

這隻有在名稱列是唯一的時才起作用。如果沒有，那麼你可能想追加一個ID。

所以首先一些測試數據：

CREATE TABLE tblValues 
    (
     ID INT, 
     Name VARCHAR(100), 
     ValueID INT, 
     Value VARCHAR(100) 
    ) 

INSERT INTO tblValues 
VALUES 
    (100,'Color',10000,'Black'), 
    (101,'Size',10005,'Large') 

然後，你需要得到列轉動上：

DECLARE @cols VARCHAR(MAX) 
;WITH CTE AS 
(
    SELECT 
     'Name_'+CAST(tbl.ID AS VARCHAR(100)) AS Name, 
     'Name_'+CAST(tbl.ID AS VARCHAR(100)) AS Sort, 
     tbl.ID 
    FROM 
     tblValues AS tbl 
    UNION ALL 
    SELECT 
     tbl.Name, 
     'Value_'+CAST(tbl.ID AS VARCHAR(100)) AS Sort, 
     tbl.ID 
    FROM 
     tblValues AS tbl 
) 
SELECT 
    @cols = COALESCE(@cols + ','+QUOTENAME(Name), 
       QUOTENAME(Name)) 
FROM 
    CTE 
ORDER BY 
    CTE.ID, 
    CTE.Sort 

然後宣佈和執行動態SQL這樣的：

DECLARE @query NVARCHAR(4000)= 
N'SELECT 
    * 
FROM 
(
    SELECT 
     ''Name_''+CAST(tbl.ID AS VARCHAR(100)) AS pivotName, 
     CAST(tbl.ValueID AS VARCHAR(100)) AS name 
    FROM 
     tblValues AS tbl 
    UNION ALL 
    SELECT 
     tbl.Name AS pivotName, 
     tbl.Value AS name 
    FROM 
     tblValues AS tbl 
) AS p 
PIVOT 
(
    MAX(name) 
    FOR pivotName IN ('+@cols+') 
) AS pvt' 

EXECUTE(@query) 

然後在我的情況下，我會刪除我創建的表

DROP TABLE tblValues 

編輯

或者在你情況下，應該是這樣的：

第一列：

DECLARE @cols VARCHAR(MAX) 
;WITH CTE AS 
(
    SELECT 
     'Name_'+CAST(tbl.ID AS VARCHAR(100)) AS Name, 
     'Name_'+CAST(tbl.ID AS VARCHAR(100)) AS Sort, 
     tbl.ID 
    FROM 
     [Table] AS tbl 
    WHERE 
     tbl.OptionID = 1000000 
    UNION ALL 
    SELECT 
     tbl.Name, 
     'Value_'+CAST(tbl.ID AS VARCHAR(100)) AS Sort, 
     tbl.ID 
    FROM 
     [Table] AS tbl 
    WHERE 
     tbl.OptionID = 1000000 
) 
SELECT 
    @cols = COALESCE(@cols + ','+QUOTENAME(Name), 
       QUOTENAME(Name)) 
FROM 
    CTE 
ORDER BY 
    CTE.ID, 
    CTE.Sort 

然後動態SQL。

DECLARE @query NVARCHAR(4000)= 
N'SELECT 
    * 
FROM 
(
    SELECT 
     ''Name_''+CAST(tbl.ID AS VARCHAR(100)) AS pivotName, 
     CAST(tbl.ValueID AS VARCHAR(100)) AS name 
    FROM 
     [Table] AS tbl 
    WHERE 
     tbl.OptionID = 1000000 
    UNION ALL 
    SELECT 
     tbl.Name AS pivotName, 
     tbl.Value AS name 
    FROM 
     [Table] AS tbl 
    WHERE 
     tbl.OptionID = 1000000 
) AS p 
PIVOT 
(
    MAX(name) 
    FOR pivotName IN ('+@cols+') 
) AS pvt' 

EXECUTE(@query) 

您不需要創建表或刪除表。那只是因爲我的數據庫中沒有你的表格，並且如果有人想要運行這個例子。

Answer 2

如果你想使用透視有不同數量的列的表，那麼我會建議使用沿着行的東西;

DECLARE @cols VARCHAR(4000) 
    DECLARE @query VARCHAR(8000) 
    SELECT @cols = STUFF((SELECT DISTINCT 
      '],[' + Name 
         FROM Table 
         ORDER BY '],[' + Name 
         FOR XML PATH('') 
        ), 1, 2, '') + ']' 

    SET @query = 
    'SELECT * FROM 
    (
     SELECT col1, col2, col3, whateverColYourInterestedIn, Name, Value 
     FROM Table 
    )t 
    PIVOT (MAX(Value) FOR Name 
    IN ('+@cols+')) AS pvt' 

    EXECUTE (@query) 

這可能不太正確，但它應該有希望成爲你的起點。

欲瞭解更多信息，檢查鏈接，如this或this。