Sql server T-SQL查找具有匹配文本的节点，并从XML字段中的同级节点提取值_Sql Server_Xml_Tsql_Xpath_Xml Namespaces

Sql server T-SQL查找具有匹配文本的节点，并从XML字段中的同级节点提取值

sql-server xml tsql xpath

Sql server T-SQL查找具有匹配文本的节点，并从XML字段中的同级节点提取值,sql-server,xml,tsql,xpath,xml-namespaces,Sql Server,Xml,Tsql,Xpath,Xml Namespaces,我有一个带有xml字段的表，其内容如下： <ContentBlock xmlns="http://corp.com/wdpr/ContentBlock"> <key xlink:href="tcm:0-133036" xlink:title="entityCard" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink"/> <template xlink:href="tcm:0-132970"

我有一个带有xml字段的表，其内容如下：

<ContentBlock xmlns="http://corp.com/wdpr/ContentBlock">
<key xlink:href="tcm:0-133036" xlink:title="entityCard" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink"/>
<template xlink:href="tcm:0-132970" xlink:title="card-header-read-more-all-media" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink"/>
<section>
    <name xlink:href="tcm:0-132988" xlink:title="header" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink"/>
    <content>
        <p xmlns="http://www.w3.org/1999/xhtml">Make a Friend</p>
    </content>
</section>
<section>
    <name xlink:href="tcm:0-133110" xlink:title="readMore" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink"/>
    <content>
        <p xmlns="http://www.w3.org/1999/xhtml">Meet and greet friendly animals at the only petting zoo in Disney’s Animal
        Kingdom park.
     </p>
    </content>
</section>
<section>
    <name xlink:href="tcm:0-132939" xlink:title="readAll" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink"/>
    <content>
        <p xmlns="http://www.w3.org/1999/xhtml">Meet and greet friendly animals.
     </p>
        <p xmlns="http://www.w3.org/1999/xhtml">Pet, brush and feed domesticated creatures
     </p>
        <ul xmlns="http://www.w3.org/1999/xhtml">
            <li xmlns="http://www.w3.org/1999/xhtml">Goats</li>
        </ul>
        <p xmlns="http://www.w3.org/1999/xhtml">Handy animal brushes are available .
     </p>
        <p xmlns="http://www.w3.org/1999/xhtml">
            <strong xmlns="http://www.w3.org/1999/xhtml">Keeping Clean</strong>
            <br xmlns="http://www.w3.org/1999/xhtml"/>Guests are encouraged to cleanse.</p>
    </content>
</section>
<media>
    <name xlink:href="tcm:0-201994" xlink:title="media" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink"/>
    <key xlink:href="tcm:0-132952" xlink:title="170 x 96" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink"/>
    <image xlink:href="tcm:0-231377" xlink:title="section-01.jpg" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink"/>
</media>
</ContentBlock>

DECLARE @mockup TABLE(ID INT IDENTITY,YourXML XML);
INSERT INTO @mockup VALUES
('<ContentBlock xmlns="http://corp.com/wdpr/ContentBlock">
  <key xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="tcm:0-133036" xlink:title="entityCard" xlink:type="simple" />
  <template xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="tcm:0-132970" xlink:title="card-header-read-more-all-media" xlink:type="simple" />
  <section>
    <name xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="tcm:0-132988" xlink:title="header" xlink:type="simple" />
    <content>
      <p xmlns="http://www.w3.org/1999/xhtml">Make a Friend</p>
    </content>
  </section>
  <section>
    <name xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="tcm:0-133110" xlink:title="readMore" xlink:type="simple" />
    <content>
      <p xmlns="http://www.w3.org/1999/xhtml">Meet and greet friendly animals at the only petting zoo in Disney’s Animal
        Kingdom park.
     </p>
    </content>
  </section>
  <section>
    <name xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="tcm:0-132939" xlink:title="readAll" xlink:type="simple" />
    <content>
      <p xmlns="http://www.w3.org/1999/xhtml">Meet and greet friendly animals.
     </p>
      <p xmlns="http://www.w3.org/1999/xhtml">Pet, brush and feed domesticated creatures
     </p>
      <ul xmlns="http://www.w3.org/1999/xhtml">
        <li xmlns="http://www.w3.org/1999/xhtml">Goats</li>
      </ul>
      <p xmlns="http://www.w3.org/1999/xhtml">Handy animal brushes are available .
     </p>
      <p xmlns="http://www.w3.org/1999/xhtml">
        <strong xmlns="http://www.w3.org/1999/xhtml">Keeping Clean</strong>
        <br xmlns="http://www.w3.org/1999/xhtml" />Guests are encouraged to cleanse.</p>
    </content>
  </section>
  <media>
    <name xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="tcm:0-201994" xlink:title="media" xlink:type="simple" />
    <key xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="tcm:0-132952" xlink:title="170 x 96" xlink:type="simple" />
    <image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="tcm:0-231377" xlink:title="section-01.jpg" xlink:type="simple" />
  </media>
</ContentBlock>');

我怎样才能得到它

提前谢谢。吉列尔莫。

像这样试试：

<ContentBlock xmlns="http://corp.com/wdpr/ContentBlock">
<key xlink:href="tcm:0-133036" xlink:title="entityCard" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink"/>
<template xlink:href="tcm:0-132970" xlink:title="card-header-read-more-all-media" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink"/>
<section>
    <name xlink:href="tcm:0-132988" xlink:title="header" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink"/>
    <content>
        <p xmlns="http://www.w3.org/1999/xhtml">Make a Friend</p>
    </content>
</section>
<section>
    <name xlink:href="tcm:0-133110" xlink:title="readMore" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink"/>
    <content>
        <p xmlns="http://www.w3.org/1999/xhtml">Meet and greet friendly animals at the only petting zoo in Disney’s Animal
        Kingdom park.
     </p>
    </content>
</section>
<section>
    <name xlink:href="tcm:0-132939" xlink:title="readAll" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink"/>
    <content>
        <p xmlns="http://www.w3.org/1999/xhtml">Meet and greet friendly animals.
     </p>
        <p xmlns="http://www.w3.org/1999/xhtml">Pet, brush and feed domesticated creatures
     </p>
        <ul xmlns="http://www.w3.org/1999/xhtml">
            <li xmlns="http://www.w3.org/1999/xhtml">Goats</li>
        </ul>
        <p xmlns="http://www.w3.org/1999/xhtml">Handy animal brushes are available .
     </p>
        <p xmlns="http://www.w3.org/1999/xhtml">
            <strong xmlns="http://www.w3.org/1999/xhtml">Keeping Clean</strong>
            <br xmlns="http://www.w3.org/1999/xhtml"/>Guests are encouraged to cleanse.</p>
    </content>
</section>
<media>
    <name xlink:href="tcm:0-201994" xlink:title="media" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink"/>
    <key xlink:href="tcm:0-132952" xlink:title="170 x 96" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink"/>
    <image xlink:href="tcm:0-231377" xlink:title="section-01.jpg" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink"/>
</media>
</ContentBlock>

DECLARE @mockup TABLE(ID INT IDENTITY,YourXML XML);
INSERT INTO @mockup VALUES
('<ContentBlock xmlns="http://corp.com/wdpr/ContentBlock">
  <key xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="tcm:0-133036" xlink:title="entityCard" xlink:type="simple" />
  <template xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="tcm:0-132970" xlink:title="card-header-read-more-all-media" xlink:type="simple" />
  <section>
    <name xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="tcm:0-132988" xlink:title="header" xlink:type="simple" />
    <content>
      <p xmlns="http://www.w3.org/1999/xhtml">Make a Friend</p>
    </content>
  </section>
  <section>
    <name xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="tcm:0-133110" xlink:title="readMore" xlink:type="simple" />
    <content>
      <p xmlns="http://www.w3.org/1999/xhtml">Meet and greet friendly animals at the only petting zoo in Disney’s Animal
        Kingdom park.
     </p>
    </content>
  </section>
  <section>
    <name xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="tcm:0-132939" xlink:title="readAll" xlink:type="simple" />
    <content>
      <p xmlns="http://www.w3.org/1999/xhtml">Meet and greet friendly animals.
     </p>
      <p xmlns="http://www.w3.org/1999/xhtml">Pet, brush and feed domesticated creatures
     </p>
      <ul xmlns="http://www.w3.org/1999/xhtml">
        <li xmlns="http://www.w3.org/1999/xhtml">Goats</li>
      </ul>
      <p xmlns="http://www.w3.org/1999/xhtml">Handy animal brushes are available .
     </p>
      <p xmlns="http://www.w3.org/1999/xhtml">
        <strong xmlns="http://www.w3.org/1999/xhtml">Keeping Clean</strong>
        <br xmlns="http://www.w3.org/1999/xhtml" />Guests are encouraged to cleanse.</p>
    </content>
  </section>
  <media>
    <name xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="tcm:0-201994" xlink:title="media" xlink:type="simple" />
    <key xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="tcm:0-132952" xlink:title="170 x 96" xlink:type="simple" />
    <image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="tcm:0-231377" xlink:title="section-01.jpg" xlink:type="simple" />
  </media>
</ContentBlock>');

--您的XML在最外面的元素中有一个默认名称空间。
--让事情变得有点奇怪的是：元素

--我们可以用语音前缀来声明它

WITH XMLNAMESPACES(DEFAULT 'http://corp.com/wdpr/ContentBlock'
                          ,'http://www.w3.org/1999/xlink' AS xlink
                          ,'http://www.w3.org/1999/xhtml' AS InnerDflt )
SELECT YourXML.value('(/ContentBlock/section[(content/InnerDflt:p/text())[1]=sql:variable("@SearchFor")]/name/@xlink:href)[1]','nvarchar(max)') 
FROM @mockup

查询的运行方式如下：

从

开始。查找

，其中

下面的

是搜索字符串。重要提示：在这个阶段，我们仍然处于
的水平。因此，我们可以使用
继续XPath
，并在那里找到属性。
Shnugo抢走了我的风头，但我仍在发布我所做的内容，因为它也会起作用，并演示了一些技巧（例如，*：
用于懒得添加正确的名称空间语法时）；）。我要提到使用sql:variable将sql变量传递到XPath表达式中——shnugo的文章演示了如何做到这一点（我在文章中没有介绍）
哦，这比我想象的要多，解释清楚，整洁。非常感谢你！
-- bonus sample data
DECLARE @xml XML = 
'<ContentBlock xmlns="http://corp.com/wdpr/ContentBlock">
<key xlink:href="tcm:0-133036" xlink:title="entityCard" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink"/>
<template xlink:href="tcm:0-132970" xlink:title="card-header-read-more-all-media" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink"/>
<section>
    <name xlink:href="tcm:0-132988" xlink:title="header" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink"/>
    <content>
        <p xmlns="http://www.w3.org/1999/xhtml">Make a Friend</p>
    </content>
</section>
<section>
    <name xlink:href="tcm:0-133110" xlink:title="readMore" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink"/>
    <content>
        <p xmlns="http://www.w3.org/1999/xhtml">Meet and greet friendly animals at the only petting zoo in Disney’s Animal
        Kingdom park.
     </p>
    </content>
</section>
<section>
    <name xlink:href="tcm:0-132939" xlink:title="readAll" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink"/>
    <content>
        <p xmlns="http://www.w3.org/1999/xhtml">Meet and greet friendly animals.</p>
        <p xmlns="http://www.w3.org/1999/xhtml">Pet, brush and feed domesticated creatures
     </p>
        <ul xmlns="http://www.w3.org/1999/xhtml">
            <li xmlns="http://www.w3.org/1999/xhtml">Goats</li>
        </ul>
        <p xmlns="http://www.w3.org/1999/xhtml">Handy animal brushes are available .
     </p>
        <p xmlns="http://www.w3.org/1999/xhtml">
            <strong xmlns="http://www.w3.org/1999/xhtml">Keeping Clean</strong>
            <br xmlns="http://www.w3.org/1999/xhtml"/>Guests are encouraged to cleanse.</p>
    </content>
</section>
<media>
    <name xlink:href="tcm:0-201994" xlink:title="media" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink"/>
    <key xlink:href="tcm:0-132952" xlink:title="170 x 96" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink"/>
    <image xlink:href="tcm:0-231377" xlink:title="section-01.jpg" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink"/>
</media>
</ContentBlock>';

DECLARE @test TABLE (someId INT IDENTITY, AppConfig XML);
INSERT @test (AppConfig) VALUES (@xml),(CAST(REPLACE(REPLACE(CAST(@xml AS VARCHAR(8000)),
  'Make a Friend','xxx'),'Keeping Clean','Make a Friend') AS XML));

-- SOLUTION
WITH XMLNAMESPACES ('http://www.w3.org/1999/xlink' AS xlink)
SELECT t.someId, href = cb.x.value('(../*:name/@xlink:href)[1]', 'varchar(8000)')
FROM @test AS t
CROSS APPLY t.AppConfig.nodes('*:ContentBlock/*:section/*:content') AS cb(x)
WHERE cb.x.exist('*:p[contains(.,"Make a Friend")]') = 1;

someId      href
----------- -------------
1           tcm:0-132988
2           tcm:0-132939