轉換TSQL XML領域的多個列

Question

我有以下數據集：

Index  | xml 
A   | <book><name>A book 1</name><book> 
B   | <book><name>B book 1</name><book><book><name>B book 2</name><book> 

並已與該代碼的工作：

SELECT [Index], 
     CAST([BookResults].query('data(/Book/Name)') AS VARCHAR(max)) AS BookName, 
FROM [BookCache] 

我需要的到底是該表： 指數| BOOKNAME

A   | A Book 1 
B   | B Book 1 
B   | B Book 2 

我似乎與這個查詢越來越是：

A   | A Book 1 
B   | B Book 1 B Book 2 

我要去哪裏錯了？如何分離出這些字段？

Answer 1

這是如何工作的，我不知道。我在XML上很糟糕。我只是看了一些例子，並把它扔在一起。希望這可以幫助！

DECLARE @BookCache TABLE ([Index] CHAR,[xml] XML); 
INSERT INTO @BookCache 
VALUES ('A','<book><name>A book 1</name></book>'), 
     ('B','<book><name>B book 1</name></book><book><name>B book 2</name></book>'); 

SELECT [Index], 
     BookNameNode.value('(text())[1]','VARCHAR(25)') AS Name 
FROM @BookCache 
CROSS APPLY [Xml].nodes('/book/name') AS [test](BookNameNode) 

結果：

Index Name 
----- ------- 
A  A book 1 
B  B book 1 
B  B book 2