將來自多行的數據轉換爲1列

Question

我想從多列中製作1列。我努力在MSSQL中做到這一點。

ID  | Type1 | Type2 
0  | Yellow | Blue 
1  | Blue | Yellow 

我想有：

ID  | TYPE_ALL | TYPE 
0  | Yellow | Type1 
0  | Blue  | Type2 
1  | Blue  | Type1 
1  | Yellow | Type2 

請，你知道該怎麼辦呢？

謝謝。

Answer 1

的UNPIVOT這裏可以使用：

SELECT * 
FROM Table 
UNPIVOT 
(Type_ALL FOR TYPE IN 
    (Type1, Type2) 
)AS unpvt; 

Answer 2

SELECT ID, Type1 AS TYPE_ALL, 'Type1' AS [TYPE] FROM YourTable 
UNION ALL 
SELECT ID, Type2 AS TYPE_ALL, 'Type2' AS [TYPE] FROM YourTable 

Answer 3

如果你不想做一個UNPIVOT，您可以改用一個UNION查詢：

SELECT ID, 
     Type1 AS TYPE_ALL, 
     'Type1' AS TYPE 
FROM yourTable 
UNION ALL 
SELECT ID, 
     Type2, 
     'Type2' 
FROM yourTable 
ORDER BY ID