在SQL Server中使用value()从xml列获取多个记录

Question

此SQL仅返回第一个Activity元素.我如何选择它们？如果我删除查询中的[1],我会收到"value()需要单例"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

谢谢Ed,但我找到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)

虽然从你的"不必要的复杂"例子看起来令人担忧的简单......