Question

我想删除XML数据类型列中的所有节点;匹配所有记录的属性条件。例如<resource>节点，其属性为“type”，其值类似于'％audio％'。

输入：

<metadata Item="1234" version="5" packageVersion="5" xmlns="http://www.imsglobal.org/xsd/imsqti_v2p2">
  <contents>
    <content version="0" href="content_es-mx_en-us.xml" lang="es-mx" altlang="en-us">
      <resources />
    </content>
    <content version="3" href="content_en-us.xml" lang="en-us">
      <resources>
        <resource type="image/svg" href="girlwateringtomatoes2.svg" />
        <resource type="audio/ogg" href="Audio/115988A_Sound1.ogg" />
        <resource type="audio/mp4" href="Audio/115988A_Sound1.m4a" />  
      </resources>
    </content>
  </contents>
  <references />
  <brailleEncodings />
</metadata>

输出：

<metadata Item="1234" version="5" packageVersion="5" xmlns="http://www.imsglobal.org/xsd/imsqti_v2p2">
  <contents>
    <content version="0" href="content_es-mx_en-us.xml" lang="es-mx" altlang="en-us">
      <resources />
    </content>
    <content version="3" href="content_en-us.xml" lang="en-us">
      <resources>
        <resource type="image/svg" href="girlwateringtomatoes2.svg" /> 
      </resources>
    </content>
  </contents>
  <references />
  <brailleEncodings />
</metadata>

以下是我尝试过但无效的查询。

;WITH XMLNAMESPACES ('http://www.imsglobal.org/xsd/imsqti_v2p2' AS NS)
Update dbo.TableX 
SET [XML].modify('delete /NS:metadata/NS:contents/NS:content[2]/resources/resource[@type != "image/svg"]')

谢谢！

Answer 1

如果您要移除type audio之类的所有内容，您可以使用contains：

;WITH XMLNAMESPACES ('http://www.imsglobal.org/xsd/imsqti_v2p2' AS NS)
Update TableX 
SET [XML].modify('delete /NS:metadata/NS:contents/NS:content[2]/NS:resources/NS:resource[contains(@type, "audio")]');

的 LiveDemo

输出：

<metadata xmlns="http://www.imsglobal.org/xsd/imsqti_v2p2" Item="1234" version="5" packageVersion="5"> <contents> <content version="0" href="content_es-mx_en-us.xml" lang="es-mx" altlang="en-us"> <resources /> </content> <content version="3" href="content_en-us.xml" lang="en-us"> <resources> <resource type="image/svg" href="girlwateringtomatoes2.svg" /> </resources> </content> </contents> <references /> <brailleEncodings /> </metadata>

或者在XML文档中的任何位置：

;WITH XMLNAMESPACES (DEFAULT 'http://www.imsglobal.org/xsd/imsqti_v2p2' ) Update TableX SET [XML].modify('delete //resources/resource[contains(@type, "audio")]');

的 LiveDemo2

Answer 2

尝试这样，这是名称空间问题......

declare @x table(myXML xml);
insert into @x values(
'<metadata Item="1234" version="5" packageVersion="5" xmlns="http://www.imsglobal.org/xsd/imsqti_v2p2">
  <contents>
    <content version="0" href="content_es-mx_en-us.xml" lang="es-mx" altlang="en-us">
      <resources />
    </content>
    <content version="3" href="content_en-us.xml" lang="en-us">
      <resources>
        <resource type="image/svg" href="girlwateringtomatoes2.svg" />
        <resource type="audio/ogg" href="Audio/115988A_Sound1.ogg" />
        <resource type="audio/mp4" href="Audio/115988A_Sound1.m4a" />  
      </resources>
    </content>
  </contents>
  <references />
  <brailleEncodings />
</metadata>');

;WITH XMLNAMESPACES (DEFAULT 'http://www.imsglobal.org/xsd/imsqti_v2p2')
Update @x 
SET [myXML].modify('delete /metadata/contents/content[2]/resources/resource[@type != "image/svg"]')

SELECT * FROM @x;

删除XML节点以匹配SQLServer中的属性条件

2 个答案: