在SQL Server中使用查询从XML中推断数据。

问题描述 投票：0回答：1

我试图从XML文档中获取一系列的值，我在页面底部的报告，在DB SQL服务器内使用xpath查询.我绝对不是这个问题的专家，我为不准确的地方道歉。我管理以下的指示，也有在这个网站上，并发现在网上进行以下过程（在我的电脑上的XML文件位于我的文件夹中的路径C：\XML-SQL\lotto_3.xml

DECLARE @xmlDoc xml;

/ * I load the entire XML file into an XML variable * /

SET @xmlDoc = (SELECT Q.BulkColumn

      FROM OPENROWSET (BULK 'C: \ XML-SQL \ lotto_3.xml', SINGLE_CLOB) AS Q);

 select @xmlDoc as mydoc

 / * I run the same query using the OPENXML function * /

 DECLARE @hdoc int

 EXEC sp_xml_preparedocument

@hdoc OUTPUT,

@xmlDoc,

'<root xmlns: std = "http://www.uni.com/U3011/sincro/"

xmlns: s = "http://www.uni.com/U3011/sincro/" /> '

 SELECT *

FROM OPENXML (@hdoc, '/ std: IdC / std: FileGroup / std: File [@s: format = "application / pdf"] / std: Path')

WITH (Filename nvarchar (max) '/ std: IdC / std: FileGroup / std: File [@s: format = "application / pdf"] / std: Path',
ID nvarchar (max) '/ std: IdC / std: SelfDescription / std: ID');

EXEC sp_xml_removedocument @hdoc;

我感兴趣的值是包含在第一个 TAG

<ID s: scheme = "local"> 1558224025077 </ID>

在所有标签值中

<Path> docs / 002D4DC0.pdf </ Path>

和各标签的标签，属于每个标签 docs 的同一节点。

<m: meta value = "2019-05-06T19: 40: 11 + 02: 00"
<m: meta value = "2019-04-30"
<m: meta value = "SCOTT ITALIA S.R.L."
<m: meta value = "200009"
<m: meta value = "IT03770200164"
<m: meta value = "9102154398"

我想得到几列每个组的数据，像这样。

Path             Data1               Name                  VatCode       number              ID
002D4DC0.pdf     2019-04-30         SCOTT                  9102154398    IT03770200164    1558224025077
002D4DC2.pdf     2019-04-30         SCOTT                  9102154402    IT03770200164    1558224025077
etc ....

而在ID栏中可能总是有相同的值=1558224025077。

然而，我设置的过程中，我只得到，寻找标签 "路径 "和 "ID s：计划 "的值，重复（1114行，对应于文件中存在的 "分组 "的数量）相同的值存在于第一个标签 "路径"，相反，我想显示所有的值，如在前面的例子。

是否可以在SQL Server中进行这种数据提取？

docs / 002D4DC0.pdf 1558224025077
docs / 002D4DC0.pdf 1558224025077
docs / 002D4DC0.pdf 1558224025077
docs / 002D4DC0.pdf 1558224025077`enter code here`
docs / 002D4DC0.pdf 1558224025077
docs / 002D4DC0.pdf 1558224025077
docs / 002D4DC0.pdf 1558224025077
docs / 002D4DC0.pdf 1558224025077
docs / 002D4DC0.pdf 1558224025077
docs / 002D4DC0.pdf 1558224025077

相反，允许我在XPath Tester应用程序中正确提取 "PAth "标签的所有值的表达式是

//*[name()= 'Path']

而对于

//meta[1]/@value

我根据指数1,2等...得到 "值 "标签的值。

但在sql server中，我不能应用它们。

I thank very much in advance who can help me.

再见

这是我的XML的例子(其他相同结构的例子可以长很多)

  <?xml version="1.0" encoding="UTF-8"?>
<IdC xmlns="http://www.uni.com/U3011/sincro/" xmlns:s="http://www.uni.com/U3011/sincro/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.uni.com/U3011/sincro/ UNI1138600_2010_EIT.xsd http://andxor.it/tDoc/lotto.xsd lotto.xsd http://andxor.it/tDoc/metadata.xsd metadata.xsd">
  <SelfDescription>
    <ID s:scheme="local">1558224025077</ID>
    <CreatingApplication>
      <Name>tDoc</Name>
      <Version>r16610</Version>
      <Producer>Andxor Soluzioni Informatiche srl</Producer>
    </CreatingApplication>
    <MoreInfo s:XMLScheme="http://andxor.it/tDoc/lotto.xsd">
      <EmbeddedMetadata>
        <lotto xmlns="http://andxor.it/tDoc/lotto.xsd">
          <company>SCOTT</company>
          <doctype>FATTURE_PASSIVE</doctype>
          <period>2019</period>
          <previous id="1557187238227">60AECF9413EE8D53F2238C03D8271670C5761FC5AEE92951966D3BE31FC192E2</previous>
        </lotto>
      </EmbeddedMetadata>
    </MoreInfo>
  </SelfDescription>
  <VdC>
    <ID s:scheme="local">1558224025077</ID>
  </VdC>
  <FileGroup xmlns:m="http://andxor.it/tDoc/metadata.xsd">
    <File s:format="application/pdf">
      <ID s:scheme="local">2969024</ID>
      <Path>docs/002D4DC0.pdf</Path>
      <Hash s:function="SHA-256">CCB149AA3C63F4B7519A49E0453742FFC63E85CD44DC458BB094D0682A053E40</Hash>
      <MoreInfo s:XMLScheme="http://andxor.it/tDoc/metadata.xsd">
        <EmbeddedMetadata>
          <m:metadata>
            <m:meta class="internal" name="Data inserimento" value="2019-05-06T19:40:11+02:00"/>
            <m:meta name="Data" value="2019-04-30"/>
            <m:meta name="Ragione Sociale" value="SCOTT ITALIA S.R.L."/>
            <m:meta name="Codice Cliente" value="200009"/>
            <m:meta name="Partita Iva" value="IT03770200164"/>
            <m:meta name="Numero Protocollo" value="9102154398"/>
          </m:metadata>
        </EmbeddedMetadata>
      </MoreInfo>
    </File>
    <File s:format="application/pdf">
      <ID s:scheme="local">2969026</ID>
      <Path>docs/002D4DC2.pdf</Path>
      <Hash s:function="SHA-256">8005A54C5D12219295B3E16CD28A93C3CDB9C9DA67630E20F8DAB749DADF1F56</Hash>
      <MoreInfo s:XMLScheme="http://andxor.it/tDoc/metadata.xsd">
        <EmbeddedMetadata>
          <m:metadata>
            <m:meta class="internal" name="Data inserimento" value="2019-05-06T19:40:13+02:00"/>
            <m:meta name="Data" value="2019-04-30"/>
            <m:meta name="Ragione Sociale" value="SCOTT ITALIA S.R.L."/>
            <m:meta name="Codice Cliente" value="200009"/>
            <m:meta name="Partita Iva" value="IT03770200164"/>
            <m:meta name="Numero Protocollo" value="9102154402"/>
          </m:metadata>
        </EmbeddedMetadata>
      </MoreInfo>
    </File>
    <File s:format="application/pdf">
      <ID s:scheme="local">2969028</ID>
      <Path>docs/002D4DC4.pdf</Path>
      <Hash s:function="SHA-256">4B516C97B13D5FC7C4D13B27CD08C3B7238292CA19B922EACA002FC3EA5648FF</Hash>
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          <m:metadata>
            <m:meta class="internal" name="Data inserimento" value="2019-05-06T19:40:15+02:00"/>
            <m:meta name="Data" value="2019-04-30"/>
            <m:meta name="Ragione Sociale" value="SCOTT ITALIA S.R.L."/>
            <m:meta name="Codice Cliente" value="200009"/>
            <m:meta name="Partita Iva" value="IT03770200164"/>
            <m:meta name="Numero Protocollo" value="9102154401"/>
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            <m:meta name="Ragione Sociale" value="SCOTT ITALIA S.R.L."/>
            <m:meta name="Codice Cliente" value="200009"/>
            <m:meta name="Partita Iva" value="IT03770200164"/>
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      </MoreInfo>
    </File>
    <File s:format="application/pdf">
      <ID s:scheme="local">2971591</ID>
      <Path>docs/002D57C7.pdf</Path>
      <Hash s:function="SHA-256">A9076E11BD03952FC2D610438E789D963E9461B6331A9DDB6649979A97487BFE</Hash>
      <MoreInfo s:XMLScheme="http://andxor.it/tDoc/metadata.xsd">
        <EmbeddedMetadata>
          <m:metadata>
            <m:meta class="internal" name="Data inserimento" value="2019-05-13T20:59:10+02:00"/>
            <m:meta name="Data" value="2019-05-13"/>
            <m:meta name="Ragione Sociale" value="SCOTT ITALIA S.R.L."/>
            <m:meta name="Codice Cliente" value="200010"/>
            <m:meta name="Partita Iva" value="IT03770200164"/>
            <m:meta name="Numero Protocollo" value="9102164891"/>
          </m:metadata>
        </EmbeddedMetadata>
      </MoreInfo>
    </File>
    <File s:format="application/pdf">
      <ID s:scheme="local">2971593</ID>
      <Path>docs/002D57C9.pdf</Path>
      <Hash s:function="SHA-256">70FECF3F3186552114D14AF57829BE76AA6F0FFC3473F620F2CA0B9B00E74712</Hash>
      <MoreInfo s:XMLScheme="http://andxor.it/tDoc/metadata.xsd">
        <EmbeddedMetadata>
          <m:metadata>
            <m:meta class="internal" name="Data inserimento" value="2019-05-13T20:59:11+02:00"/>
            <m:meta name="Data" value="2019-05-13"/>
            <m:meta name="Ragione Sociale" value="SCOTT ITALIA S.R.L."/>
            <m:meta name="Codice Cliente" value="200010"/>
            <m:meta name="Partita Iva" value="IT03770200164"/>
            <m:meta name="Numero Protocollo" value="9102164890"/>
          </m:metadata>
        </EmbeddedMetadata>
      </MoreInfo>
    </File>
  </FileGroup>
  <Process>
    <Agent s:type="organization" s:role="PreservationManager">
      <AgentName>
        <FormalName>KPNQwest Italia SpA</FormalName>
      </AgentName>
      <Agent_ID s:scheme="TaxCode">07957860153</Agent_ID>
    </Agent>
    <Agent s:type="person" s:role="PreservationManager">
      <AgentName>
        <NameAndSurname>
          <FirstName>Giuseppe</FirstName>
          <LastName>Baccanelli</LastName>
        </NameAndSurname>
      </AgentName>
      <Agent_ID s:scheme="TaxCode">BCCGPP64C01A940D</Agent_ID>
    </Agent>
    <Agent s:type="person" s:role="PreservationManager">
      <AgentName>
        <NameAndSurname>
          <FirstName>Giuseppe</FirstName>
          <LastName>Baccanelli</LastName>
        </NameAndSurname>
      </AgentName>
      <Agent_ID s:scheme="TaxCode">BCCGPP64C01A940D</Agent_ID>
    </Agent>
    <Agent s:type="organization" s:role="OtherRole" s:otherRole="Other role">
      <AgentName>
        <FormalName>Amministratore</FormalName>
      </AgentName>
    </Agent>
    <TimeReference>
      <TimeInfo>2019-05-19T02:00:25+02:00</TimeInfo>
    </TimeReference>
    <LawAndRegulations s:language="it">DPCM 3 dicembre 2013</LawAndRegulations>
  </Process>
</IdC>
sql-server xml xpath
1个回答
1
投票

有没有必要使用 OPENXML() 及其伙伴 sp_xml_preparedocument 和`sp_xml_removedocument。它们的保留只是为了向后兼容过时的SQL Server 2000。

从SQL Server 2005开始，它支持XML数据类型方法和XQuery语言。下面的例子是使用一对多的关系模拟通过 CROSS APPLY 子句和XML结构中不同级别的不同别名。元数据片段是根据元数据中的 @name 属性值。

看看吧。

SQL

-- directly from the XML file as a virtual DB table on the file system
;WITH XMLNAMESPACES (DEFAULT 'http://www.uni.com/U3011/sincro/', 'http://andxor.it/tDoc/metadata.xsd' AS m)
, rs (xmldata) AS
(
   SELECT TRY_CAST(BulkColumn AS XML) AS BulkColumn 
   FROM OPENROWSET(BULK 'e:\Temp\Lotto_3.xml', SINGLE_BLOB) AS x
)
SELECT c.value('(Path/text())[1]', 'VARCHAR(30)') AS [Path]
   , x.value('(m:meta[@name="Data"]/@value)[1]','DATE') AS [Data1]
   , x.value('(m:meta[@name="Ragione Sociale"]/@value)[1]','VARCHAR(50)') AS [Name]
   , x.value('(m:meta[@name="Numero Protocollo"]/@value)[1]','VARCHAR(50)') AS [VatCode]
   , x.value('(m:meta[@name="Partita Iva"]/@value)[1]','VARCHAR(50)') AS [number]
   , tbl.xmldata.value('(/IdC/SelfDescription/ID/text())[1]','VARCHAR(50)') AS [ID]
FROM rs AS tbl
   CROSS APPLY tbl.xmldata.nodes('/IdC/FileGroup/File') AS t(c)
   CROSS APPLY t.c.nodes('MoreInfo/EmbeddedMetadata/m:metadata') AS meta(x);

产量

+-------------------+------------+---------------------+------------+---------------+---------------+
|       Path        |   Data1    |        Name         |  VatCode   |    number     |      ID       |
+-------------------+------------+---------------------+------------+---------------+---------------+
| docs/002D4DC0.pdf | 2019-04-30 | SCOTT ITALIA S.R.L. | 9102154398 | IT03770200164 | 1558224025077 |
| docs/002D4DC2.pdf | 2019-04-30 | SCOTT ITALIA S.R.L. | 9102154402 | IT03770200164 | 1558224025077 |
| docs/002D4DC4.pdf | 2019-04-30 | SCOTT ITALIA S.R.L. | 9102154401 | IT03770200164 | 1558224025077 |
| docs/002D4DC6.pdf | 2019-04-30 | SCOTT ITALIA S.R.L. | 9102154403 | IT03770200164 | 1558224025077 |
| docs/002D57A7.pdf | 2019-05-10 | SCOTT ITALIA S.R.L. | 9102164873 | IT03770200164 | 1558224025077 |
| docs/002D57A9.pdf | 2019-05-10 | SCOTT ITALIA S.R.L. | 9102164874 | IT03770200164 | 1558224025077 |
| docs/002D57AB.pdf | 2019-05-10 | SCOTT ITALIA S.R.L. | 9102164878 | IT03770200164 | 1558224025077 |
| docs/002D57AD.pdf | 2019-05-10 | SCOTT ITALIA S.R.L. | 9102164871 | IT03770200164 | 1558224025077 |
| docs/002D57AF.pdf | 2019-05-10 | SCOTT ITALIA S.R.L. | 9102164869 | IT03770200164 | 1558224025077 |
| docs/002D57B1.pdf | 2019-05-10 | SCOTT ITALIA S.R.L. | 9102164875 | IT03770200164 | 1558224025077 |
| docs/002D57B3.pdf | 2019-05-10 | SCOTT ITALIA S.R.L. | 9102164882 | IT03770200164 | 1558224025077 |
| docs/002D57B5.pdf | 2019-05-10 | SCOTT ITALIA S.R.L. | 9102164886 | IT03770200164 | 1558224025077 |
| docs/002D57B7.pdf | 2019-05-10 | SCOTT ITALIA S.R.L. | 9102164884 | IT03770200164 | 1558224025077 |
| docs/002D57B9.pdf | 2019-05-10 | SCOTT ITALIA S.R.L. | 9102164881 | IT03770200164 | 1558224025077 |
| docs/002D57BB.pdf | 2019-05-10 | SCOTT ITALIA S.R.L. | 9102164883 | IT03770200164 | 1558224025077 |
| docs/002D57BD.pdf | 2019-05-10 | SCOTT ITALIA S.R.L. | 9102164880 | IT03770200164 | 1558224025077 |
| docs/002D57BF.pdf | 2019-05-13 | SCOTT ITALIA S.R.L. | 9102164889 | IT03770200164 | 1558224025077 |
| docs/002D57C1.pdf | 2019-05-10 | SCOTT ITALIA S.R.L. | 9102164887 | IT03770200164 | 1558224025077 |
| docs/002D57C3.pdf | 2019-05-10 | SCOTT ITALIA S.R.L. | 9102164888 | IT03770200164 | 1558224025077 |
| docs/002D57C5.pdf | 2019-05-10 | SCOTT ITALIA S.R.L. | 9102164885 | IT03770200164 | 1558224025077 |
| docs/002D57C7.pdf | 2019-05-13 | SCOTT ITALIA S.R.L. | 9102164891 | IT03770200164 | 1558224025077 |
| docs/002D57C9.pdf | 2019-05-13 | SCOTT ITALIA S.R.L. | 9102164890 | IT03770200164 | 1558224025077 |
+-------------------+------------+---------------------+------------+---------------+---------------+
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