問題描述

無法獲得所需的 XML 輸出

Not able to to get the desired XML output

以下內容:

  SELECT  1 as Tag,
          0 as Parent,
          sID       as [Document!1!sID], 
          docID     as [Document!1!docID],
          null      as [To!2!value]
  FROM docSVsys with (nolock)
  where docSVsys.sID = '57'
  UNION ALL 
  SELECT 2 as Tag,
         1 as Parent,
         sID,
         NULL,
         value         
  FROM   docMVtext
  WHERE  docMVtext.sID = '57'
  ORDER BY [Document!1!sID],[To!2!value]
  FOR XML EXPLICIT;

產生:

    <Document sID="57" docID="3.818919.C41P3UKK00BRICLAY0AR1ET2EBPYSU4SA">
      <To value="Frank Ermis" />
      <To value="Keith Holst" />
      <To value="Mike Grigsby" />
    </Document>

我想要的是:

    <Document sID="57">
      <docID>3.818919.C41P3UKK00BRICLAY0AR1ET2EBPYSU4SA</docID>
      <To>
        <Value>Frank Ermis</Value>
        <Value>Keith Holst</Value>
        <Value>Mike Grigsby</Value>
      </To>
    </Document>

我可以使用 FOR XML 獲得該輸出嗎?

Can I get that ouput with FOR XML?

好的，我知道它們在技術上可能是等效的.
我想要的和我需要的不一樣.

Ok I get they may be technically equivalent.
What I want and what I need are not the same.

為此使用 xDocument 很慢.
有數以百萬計的文檔，并且需要一次將多達 100 萬個 XML 轉換為 XML.
TSQL FOR XML 非常快.
我只需要獲取 FOR XML 格式即可.

Using xDocument for this is is SLOW.
There are millions of documents and need to XML up to 1 million at a time to XML.
The TSQL FOR XML is super fast.
I just need to get FOR XML to format.

解決方案(基于接受的答案):

The solution (based on accepted answer):

   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')

產生:

<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>

現在我需要做的是給元素 MVtext 添加一個 DispName 屬性.屬性不能有任何空格，我想包括友好名稱，例如多值文本.

Now what I need to do is to add a DispName attribute to the element MVtext. Attribute cannot have any spaces and I would like to include the friendly name e.g. Multi Value Text.

推薦答案

嘗試這樣的事情(未經測試，因為我沒有你的數據庫表來測試......):

Try something like this (untested, since I don't have your database tables to test against...):

  SELECT 
     sv.sID AS '@sID',
     sv.docID AS 'docID',
     (SELECT 
         value AS 'value'
      FROM   
         dbo.docMVtext mv
      WHERE
         mv.sID = sv.sID
      ORDER BY mv.value
      FOR XML PATH (''), TYPE) AS 'To'    
  FROM   
      dbo.docSVsys sv
  WHERE  
      sv.sID = '57'
  ORDER BY 
      sv.sID
  FOR XML PATH('Document')

這是否為您提供了您正在尋找的東西?您是否同意約翰和我的看法:這比 FOR XML EXPLICIT...

Does that give you what you're looking for?? And don't you agree with John and me: this is much simpler than FOR XML EXPLICIT.....

這篇關于TSQL FOR XML EXPLICIT的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網！