Question

我想循环遍历SQL Server中的xml节点，并创建包含＆＃39;，＆＃39;的每个节点的副本。

例如，对于以下xml：

 declare @answerXML xml = '<answers><answer part="1">answer,test0</answer><answer part="1">answer,test1</answer></answers>'

我希望修改为以下内容：

declare @answerXML xml = '<answers><answer part="1">answer,test0</answer><answer part="1">answer, test0</answer><answer part="1">answer,test1</answer><answer part="1">answer, test1</answer></answers>'

（每个节点都是重复的，在添加的节点中，在逗号后添加空格）。

我正在计划使用这样的东西：

SELECT 
    T.ref.value('.', 'varchar(256)') AS Answer 
FROM 
    (SELECT 
         [Xml] = @answerXML.query('for $i in data(/answers/answer) 
                                   return element temp { $i }')
    ) A
CROSS APPLY
    A.Xml.nodes('/temp') T(ref)

但没有用，似乎太复杂了。

任何人都可以帮助学习如何在T-SQL中循环和更新XML吗？

提前谢谢你，

Answer 1

您可以尝试粉碎XML并从头开始重建：

declare @answerXML xml=
'<answers>
  <answer part="1">answer,test0</answer>
  <answer part="1">answer,test1</answer>
</answers>';

SELECT a.value(N'@part',N'int') AS [answer/@part]
      ,a.value(N'text()[1]',N'nvarchar(max)') AS [answer] 
      ,''
      ,a.value(N'@part',N'int') AS [answer/@part]
      ,REPLACE(a.value(N'text()[1]',N'nvarchar(max)'),',',', ') AS [answer] 
FROM @answerXML.nodes(N'/answers/answer') AS A(a)
FOR XML PATH(''),ROOT('answers')

结果

<answers>
  <answer part="1">answer,test0</answer>
  <answer part="1">answer, test0</answer>
  <answer part="1">answer,test1</answer>
  <answer part="1">answer, test1</answer>
</answers>

循环并修改SQL Server的xml节点

1 个答案: