TSQL FOR XML PATH属性打开,类型

基本上我需要从数据库输出单值和多值字段.数据的大多数用户都不是技术用户,如果他们能够阅读XML并理解它,那就太好了.在另一篇文章的帮助下,我几乎一直都在那里.

我遇到的问题是元素名称不能有任何空格.需要包含可能包含空格的显示名称.例如,MVtext displayName =“Multi Value Text”.如果正确的答案是内联架构或其他方法,请告诉我.它不像我可以发布静态模式,因为应用程序可以动态添加字段.字段可以随报告类型而变化.这些字段在表格中,我读取该表格来构建选择.

如何传达可能包含元素空间的显示名称？ sql 2008 R2.

SELECT top 4
     [sv].[sID] AS '@sID',[sv].[sParID] AS '@sParID',[sv].[docID] AS 'docID',[sv].addDate as 'addDate',(SELECT [value] AS 'value'
       FROM  [docMVtext] as [mv]
       WHERE [mv].[sID] = [sv].[sID]
         AND [mv].[fieldID] = '113'
       ORDER BY [mv].[value]
       FOR XML PATH (''),type
     ) AS "To",(SELECT [value] AS 'value'
       FROM  [docMVtext] as [mv]
       WHERE [mv].[sID] = [sv].[sID]
         AND [mv].[fieldID] = '130'
       ORDER BY [mv].[value]
       FOR XML PATH (''),type
     ) AS "MVtest" 
  FROM  [docSVsys] as [sv]
  WHERE [sv].[sID] >= '57' 
  ORDER BY 
      [sv].[sParID],[sv].[sID]
  FOR XML PATH('Document'),root('Documents')

生产：

<Documents>
  <Document sID="57" sParID="57">
    <docID>3.818919.C41P3UKK00BRICLAY0AR1ET2EBPYSU4SA</docID>
    <addDate>2011-10-28T12:26:00</addDate>
    <To>
      <value>Frank Ermis</value>
      <value>Keith Holst</value>
      <value>Mike Grigsby</value>
    </To>
    <MVtest>
      <value>MV test 01</value>
      <value>MV test 02</value>
      <value>MV test 03</value>
      <value>MV test 04</value>
    </MVtest>
  </Document>
  <Document sID="58" sParID="57">
    <docID>3.818919.C41P3UKK00BRICLAY0AR1ET2EBPYSU4SA.1</docID>
    <addDate>2011-10-28T12:26:00</addDate>
  </Document>
  <Document sID="59" sParID="59">
    <docID>3.818920.KJKP5LYKTNIodoEI4JDOKJ2BXJI5P0BIA</docID>
    <addDate>2011-10-28T12:26:00</addDate>
    <To>
      <value>Vladimir Gorny</value>
    </To>
  </Document>
  <Document sID="60" sParID="59">
    <docID>3.818920.KJKP5LYKTNIodoEI4JDOKJ2BXJI5P0BIA.1</docID>
    <addDate>2011-10-28T12:26:00</addDate>
  </Document>
</Documents>

我累了

SELECT  [value] AS 'value','MV test' as 'dispName'

但我明白了

<MVtest>
  <value>MV test 01</value>
  <dispName>MV test</dispName>
  <value>MV test 02</value>
  <dispName>MV test</dispName>
  <value>MV test 03</value>
  <dispName>MV test</dispName>
  <value>MV test 04</value>
  <dispName>MV test</dispName>
</MVtest>

SELECT [value] AS’value’,’MV test’为’@dispName’
引发执行错误
行标记省略(空行标记名称)不能与以属性为中心的FOR XML序列化一起使用

期望的输出：

<Documents>
  <Document sID="57" sParID="57">
    <docID>3.818919.C41P3UKK00BRICLAY0AR1ET2EBPYSU4SA</docID>
    <addDate>2011-10-28T12:26:00</addDate>
    <To>
      <value>Frank Ermis</value>
      <value>Keith Holst</value>
      <value>Mike Grigsby</value>
    </To>
    <MVtest dispName="Multi Value Text">
      <value>MV test 01</value>
      <value>MV test 02</value>
      <value>MV test 03</value>
      <value>MV test 04</value>
    </MVtest>
  </Document>
  </Documents>

解：

SELECT top 4
     [sv].[sID] AS '@sID','SV' as 'docID/@SVMV','SV' as 'addDate/@SVMV','Email To' as 'To/@displayName','MV' as 'To/@SVMV','Multi Value Text Sample' as 'MVtext130/@displayName','MV' as 'MVtext130/@SVMV',(SELECT  [value] AS 'value' 
       FROM  [docMVtext] as [mv]
       WHERE [mv].[sID] = [sv].[sID]
         AND [mv].[fieldID] = '130'
       ORDER BY [mv].[value]
       FOR XML PATH (''),type
     ) AS "MVtext130" 
  FROM  [docSVsys] as [sv]
  WHERE [sv].[sID] >= '57' 
  ORDER BY [sv].[sParID],root('Documents')

解决方案输出

<Documents>
  <Document sID="57" sParID="57">
    <docID SVMV="SV">3.818919.C41P3UKK00BRICLAY0AR1ET2EBPYSU4SA</docID>
    <addDate SVMV="SV">2011-10-28T12:26:00</addDate>
    <To displayName="Email To" SVMV="MV">
      <value>Frank Ermis</value>
      <value>Keith Holst</value>
      <value>Mike Grigsby</value>
    </To>
    <MVtext130 displayName="Multi Value Text Sample" SVMV="MV">
      <value>MV test 01</value>
      <value>MV test 02</value>
      <value>MV test 03</value>
      <value>MV test 04</value>
    </MVtext130>
  </Document>
  <Document sID="58" sParID="57">
    <docID SVMV="SV">3.818919.C41P3UKK00BRICLAY0AR1ET2EBPYSU4SA.1</docID>
    <addDate SVMV="SV">2011-10-28T12:26:00</addDate>
    <To displayName="Email To" SVMV="MV" />
    <MVtext130 displayName="Multi Value Text Sample" SVMV="MV" />
  </Document>
  <Document sID="59" sParID="59">
    <docID SVMV="SV">3.818920.KJKP5LYKTNIodoEI4JDOKJ2BXJI5P0BIA</docID>
    <addDate SVMV="SV">2011-10-28T12:26:00</addDate>
    <To displayName="Email To" SVMV="MV">
      <value>Vladimir Gorny</value>
    </To>
    <MVtext130 displayName="Multi Value Text Sample" SVMV="MV" />
  </Document>
  <Document sID="60" sParID="59">
    <docID SVMV="SV">3.818920.KJKP5LYKTNIodoEI4JDOKJ2BXJI5P0BIA.1</docID>
    <addDate SVMV="SV">2011-10-28T12:26:00</addDate>
    <To displayName="Email To" SVMV="MV" />
    <MVtext130 displayName="Multi Value Text Sample" SVMV="MV" />
  </Document>
</Documents>

对于我提出的问题,这是一个很好的解决方案.添加属性的一个症状是即使零值行也能获得元素.理想情况下,如果没有值,它将不会列出元素.

尝试了一个Case语句,但即使我将值设置为”,它也会显示该元素.

,[MVtext130/@displayName] = 
     Case (select COUNT(*) FROM [docMVtext] 
                  WHERE [docMVtext].[sID] = [sv].[sID]
                  AND [docMVtext].[fieldID] = '130')
       when '0' then ''
       else 'Multi Value Text Sample'
     end

更新了没有值列表元素的解决方案：

SELECT top 4
     [sv].[sID] AS '@sID',(select top(1) 'Email To'
      from [docMVtext] as C
      where C.[sID] = [sv].[sID] and c.fieldID = '113' ) as 'To/@displayName',(select top(1) 'MV'
      from [docMVtext] as C
      where C.[sID] = [sv].[sID] and c.fieldID = '113' ) as 'To/@SVMV'
    --,'Email To' as 'To/@displayName'
    --,(select top(1) 'Multi Value Text Sample'
      from [docMVtext] as C
      where C.[sID] = [sv].[sID] and c.fieldID = '130' ) as 'MVtext130/@displayName',(select top(1) 'MV'
      from [docMVtext] as C
      where C.[sID] = [sv].[sID] and c.fieldID = '130' ) as 'MVtext130/@SVMV'
    --,'Multi Value Text Sample' as 'MVtext130/@displayName'
    --,root('Documents')

不确定我理解你想要什么,如果没有你的表,很难用你的代码做一些事情,所以我创建了一个我认为正在做你已经拥有的样本.

设置表和数据：

declare @Main table
(
  MainID int identity,Value int
)

declare @Child table
(
  ChildID int identity,MainID int,Value int
)

insert into @Main values (10),(20),(30)
insert into @Child values (1,100),(2,200),210)

与您的查询大致相同的查询已经完成.

select M.MainID as '@MainID',M.Value as 'MainValue',(select C.Value as ChildValue
        from @Child as C
        where C.MainID = M.MainID
        for xml path(''),type) as Child
from @Main as M
for xml path('Document'),root('Documents')

结果：

<Documents>
  <Document MainID="1">
    <MainValue>10</MainValue>
    <Child>
      <ChildValue>100</ChildValue>
    </Child>
  </Document>
  <Document MainID="2">
    <MainValue>20</MainValue>
    <Child>
      <ChildValue>200</ChildValue>
      <ChildValue>210</ChildValue>
    </Child>
  </Document>
  <Document MainID="3">
    <MainValue>30</MainValue>
  </Document>
</Documents>

我相信您的预期输出将是这样的,在子节点上具有显示名称属性.

<Documents>
  <Document MainID="1">
    <MainValue>10</MainValue>
    <Child displayName="Child display Name">
      <ChildValue>100</ChildValue>
    </Child>
  </Document>
  <Document MainID="2">
    <MainValue>20</MainValue>
    <Child displayName="Child display Name">
      <ChildValue>200</ChildValue>
      <ChildValue>210</ChildValue>
    </Child>
  </Document>
  <Document MainID="3">
    <MainValue>30</MainValue>
  </Document>
</Documents>

为此,您可以使用此查询：

select M.MainID as '@MainID',(select top(1) 'Child display Name'
        from @Child as C
        where C.MainID = M.MainID) as 'Child/@displayName',root('Documents')

TSQL FOR XML PATH属性打开,类型

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