充分利用XML列（）在SQL Server的多条记录与价值(Getting multiple rec

这个SQL只返回的第一个活动元素。 我该如何选择它们呢？ 如果我删除了[1]在查询中我得到的“值（）需要一个单身”的错误。

 DECLARE @myDoc xml
    SET @myDoc = 
    '<Root>
        <Activities>
            <Activity>This is activity one</Activity>
            <Activity>This is activity two</Activity>
            <Activity>This is activity three</Activity>
        </Activities>
    </Root>'

    SELECT @myDoc.value('(/Root/Activities/Activity)[1]', 'varchar(100)' )

Answer 1:

感谢埃德，但我发现了一个更简单的版本：

SELECT T.C.value('.', 'varchar(100)') as activity
FROM @myDoc.nodes('(/Root/Activities/Activity)') as T(C)

虽然从“过于复杂”的例子似乎令人担忧的是简单..

Answer 2:

这工作，但似乎不必要的复杂。 有可能是一个更简单的方法。

 DECLARE @myDoc xml
    SET @myDoc = 
    '<Root>
        <Activities>
            <Activity>This is activity one</Activity>
            <Activity>This is activity two</Activity>
            <Activity>This is activity three</Activity>
        </Activities>
    </Root>'

SELECT activity.VALUE('(//Activity)[1]','varchar(100)') AS activity
FROM (
        SELECT NewTable.activity.query('.') AS activity
        FROM (SELECT 1 AS col1) AS t
        CROSS APPLY @myDoc.nodes('(/Root/Activities/Activity)') AS NewTable(activity)
     ) AS x

Answer 3:

这是另一种情况及解决方法：我正在寻找这种情况下有使用一个查询中选择两个元素。

CREATE TABLE #Table1 (ID INT IDENTITY(1,1),XMLDoc XML)

INSERT INTO #Table1 VALUES ('
 <bookstore>
 <name>Bookstore1</name>
 <location>Location1</location>
 <book>
     <title>Titile1</title>
     <price>40</price>
    </book>
 </bookstore>')

 INSERT INTO #Table1 VALUES ('
 <bookstore>
  <name>Bookstore2</name>
 <location>Location2</location>
 <book>
     <title>Titile2</title>
     <price>50</price>
 </book>
</bookstore>')


SELECT ID,
T.c.value('title[1]','varchar(50)') AS 'BookTitile',
T.c.value('price[1]','decimal(18,2)') AS 'Price'
FROM #Table1
CROSS APPLY #Table1.XMLDoc.nodes('/bookstore/book') T(c)

DROP TABLE #Table1

按要求包括XMLNAMESPACES可以修改此。 解决方案最初发现于： https://social.msdn.microsoft.com/Forums/sqlserver/en-US/35e75e32-9ffb-4a30-8637-2cc928554763/selecting-multiple-values-from-multiple-rows-of-xml ？论坛= SQLXML

文章来源: Getting multiple records from xml column with value() in SQL Server