经过几天的调整，我仍然无法做到这一点。我正在尝试读取一个包含大量命名空间的 xml 文件，将特定的节点值插入到不同的表中。

XML

<ArrayOfCatalogItem xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <CatalogItem Version="1">
    <Container xmlns="http://3ecompany.com/webservices/catalogitemxml">
      <ContainerType>Unknown</ContainerType>
      <MarkedForRetail xsi:nil="true" />
    </Container>
    <Documents CultureCode="en" Elink="https://3eonline.com/ImageServer/ImageViewer.aspx?id=3Q%2ffAR8ne%2fvPh6syVnSymkS%2bBDo8OjmbVocxRCMEgeEuoz0WYqIq%2bpG3%2b3wu9B2vvARePPfTWFBb0hg91%2fRYfNzA43I%2baZTLYlibHjHcCDI%3d" Format="Msds" DocumentType="Sds" xmlns="http://3ecompany.com/webservices/catalogitemxml" />
    <Documents CultureCode="en" Elink="https://3eonline.com/ImageServer/ImageViewer.aspx?id=3Q%2ffAR8ne%2fvPh6syVnSymniD9dyO5cXo%2bPmAACkW7RMmVjYMZVxizRxXLlqcjbNGgyhjsG5gzhZK9bibPB5EPg%3d%3d" Format="ClientAttachment" DocumentType="Attachment" xmlns="http://3ecompany.com/webservices/catalogitemxml" />
    <IsHazardous xmlns="http://3ecompany.com/webservices/catalogitemxml">true</IsHazardous>
    <ManufacturerName xmlns="http://3ecompany.com/webservices/catalogitemxml">Sigma-Aldrich</ManufacturerName>
    <Msds xmlns="http://3ecompany.com/webservices/catalogitemxml">
      <Elink>https://3eonline.com/ImageServer/ImageViewer.aspx?id=3Q%2ffAR8ne%2fvPh6syVnSymqIuIP5CInA01ZbaRQ9r18HUOi1FRQqntYtr58dWAm4wO3rdUO%2bO6MamuvwN7v7fbA%3d%3d</Elink>
      <FireCodeClassification>
      <MsdsId>8342624</MsdsId>
      <Properties>
        <PhysicalState>Liquid</PhysicalState>
        <BoilingPoint>
          <Minimum xsi:nil="true" />
          <Range>EqualTo</Range>
          <Units>Celsius</Units>
          <Value>217.0000</Value>
        </BoilingPoint>
      </Properties>
      <TransportationClassificationCompleted xsi:nil="true" />
      <WasteCompleted xsi:nil="true" />
      <ExtendedSds>false</ExtendedSds>
      <TransportationExceptionClassificationCompleted xsi:nil="true" />
      <BestAvailable>false</BestAvailable>
    </Msds>
    <ProductIdentifiers xmlns="http://3ecompany.com/webservices/catalogitemxml">
      <Identifier>4197644</Identifier>
      <FlaggedForResend xsi:nil="true" />
    </ProductIdentifiers>
    <ProductName xmlns="http://3ecompany.com/webservices/catalogitemxml">(3-Aminopropyl)triethoxyeilane - A3648</ProductName>
    <ProductUid xmlns="http://3ecompany.com/webservices/catalogitemxml">4d3dc6df9cf24cc6b3ab2b6be8373858</ProductUid>
    <IsDeactivated xmlns="http://3ecompany.com/webservices/catalogitemxml">false</IsDeactivated>
    <DeactivatedDate xsi:nil="true" xmlns="http://3ecompany.com/webservices/catalogitemxml" />
  </CatalogItem>
</ArrayOfCatalogItem>

我需要从这个 xml 中获取几个值(为了便于阅读，我删除了大部分 xml)。我编写了示例查询以仅获取标识符，而我得到的只是标识符列的“Null”。我想获取 ContainerType、MsdsID、PhysicalState、Minimum、

查询

DECLARE @XmlTable TABLE (XMLDATA XML)

INSERT INTO @XmlTable(XMLData)
SELECT CONVERT(XML, BulkColumn) AS BulkColumn 
FROM OPENROWSET(BULK 'C:\AAEWRXML.xml', SINGLE_BLOB) AS x;

;WITH XMLNAMESPACES (Default 'http://www.w3.org/2001/XMLSchema','http://3ecompany.com/webservices/catalogitemxml' as CI)
     SELECT 
     Identifier = XmlData.value('(ArrayOfCatalogItem/CatalogItem/ProductIdentifiers/CI:Identifier)[1]', 'varchar(10)'),
     From
     @XmlTable

最佳答案

使用这个:

;WITH XMLNAMESPACES ('http://3ecompany.com/webservices/catalogitemxml' as CI)
SELECT 
    CIVersion = CI.value('@Version', 'int'),
    Identifier = PID.value('(.)[1]', 'varchar(10)')
FROM
    @XmlTable
CROSS APPLY
    XMLData.nodes('/ArrayOfCatalogItem/CatalogItem') AS XT(CI)
CROSS APPLY
    CI.nodes('CI:ProductIdentifiers/CI:Identifier') AS XT2(PID)

没有默认 XML 命名空间，您需要应用 CI: <ProductIdentifiers> 的前缀以及 <Identifier>节点。此外，您的示例 XML 缺少结束符 </FireCodeClassification>标签....

关于sql-server - 在 SQL Server 2008 中使用 xmlnamespaces 读取带有命名空间的 XML 文件，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/38972698/