SQL Server 2016 从 XML 中提取信息
SQL Server 2016 extract info from XML
我浏览过关于同一主题的各种帖子，但我似乎无法访问我的 XML 文件中的数据元素。
这是我的 XML 的片段：
<ed:Certificate xmlns="http://sancrt.mpi.govt.nz/ecert/2013/ed-multiple-submission-schema.xsd" xmlns:ed="http://sancrt.mpi.govt.nz/ecert/2013/ed-submission-schema.xsd"> <ed:Status Code="39">Approved</ed:Status> <ed:LastUpdatedDate>2021-03-10T14:20:55+13:00</ed:LastUpdatedDate> <ed:Identifiers>
<ed:CertificateID>NZL2021/MEABC/26913T</ed:CertificateID>
<ed:TemplateID>ED1.6</ed:TemplateID> </ed:Identifiers> <ed:Exhausted>true</ed:Exhausted> <ed:AutoApproval>false</ed:AutoApproval> <ed:DepartureDate>2021-03-10</ed:DepartureDate> <ed:Parties>
<ed:ConsignorID>MEABC</ed:ConsignorID>
<ed:ConsigneeID>FLIGHT1</ed:ConsigneeID> </ed:Parties> <ed:Transport>
<ed:Ports>
<ed:LoadingPortID>NZTRG</ed:LoadingPortID>
</ed:Ports>
<ed:FinalDestination>OAKLAND, United States</ed:FinalDestination>
<ed:TransportMode>1</ed:TransportMode>
<ed:LocalCarrier>MDH2</ed:LocalCarrier>
<ed:CarrierName> Ever Given</ed:CarrierName>
<ed:ConveyanceReference>V1234</ed:ConveyanceReference> </ed:Transport> <ed:Remarks>
<ed:Remark>
<ed:RemarkType>Unofficial Information</ed:RemarkType>
<ed:RemarkValue>Vessel ETD - 19/03/21\nTARE WEIGHT - 2880 KGS</ed:RemarkValue>
</ed:Remark> </ed:Remarks> <ed:Products>
<ed:Product>
<ed:ProductItem>1</ed:ProductItem>
<ed:Exhausted>true</ed:Exhausted>
<ed:Origin>AO</ed:Origin>
<ed:Description>BONELESS BEEF RUMP CAP</ed:Description>
<ed:CommonName>Bovine</ed:CommonName>
<ed:EligibilityCountries>
<ed:EligibilityCountryID>US</ed:EligibilityCountryID>
</ed:EligibilityCountries>
<ed:IntendedUse>consumption</ed:IntendedUse>
<ed:GrossWeight unitCode="KGM">296.4</ed:GrossWeight>
<ed:NetWeight unitCode="KGM">271.6</ed:NetWeight>
<ed:Remarks>
<ed:Remark>
<ed:RemarkType>Product Statement</ed:RemarkType>
<ed:RemarkValue>Item No. 81625\nLabel Approval 2659305 & 91060858</ed:RemarkValue>
</ed:Remark>
</ed:Remarks>
<ed:Classifications>
<ed:Classification>
<ed:ClassificationType>Temperature</ed:ClassificationType>
<ed:ClassificationValue>chilled</ed:ClassificationValue>
</ed:Classification>
<ed:Classification>
<ed:ClassificationType>New Zealand Harmonised System Code</ed:ClassificationType>
<ed:ClassificationValue>020130</ed:ClassificationValue>
</ed:Classification>
<ed:Classification>
<ed:ClassificationType>Halal Product</ed:ClassificationType>
<ed:ClassificationValue>1</ed:ClassificationValue>
</ed:Classification>
</ed:Classifications>
<ed:Containers>
<ed:Container>
<ed:ID>CGMU3099999</ed:ID>
<ed:Seals>
<ed:ID>NZMPIXXXXX</ed:ID>
</ed:Seals>
</ed:Container>
</ed:Containers>
<ed:Packaging>
<ed:Package>
<ed:Quantity>29</ed:Quantity>
<ed:Type>CT</ed:Type>
<ed:Level>1</ed:Level>
<ed:ShippingMarks>
<ed:Name>MABC\n26913</ed:Name>
</ed:ShippingMarks>
</ed:Package>
</ed:Packaging>
<ed:Processes>
<ed:Process>
<ed:ProcessTypeCode>SLT</ed:ProcessTypeCode>
<ed:StartDate>2021-03-01</ed:StartDate>
<ed:EndDate>2021-03-01</ed:EndDate>
<ed:DateOverride>false</ed:DateOverride>
<ed:Premise>
<ed:ID>MEABC</ed:ID>
</ed:Premise>
</ed:Process>
<ed:Process>
<ed:ProcessTypeCode>PRO</ed:ProcessTypeCode>
<ed:StartDate>2021-03-02</ed:StartDate>
<ed:EndDate>2021-03-02</ed:EndDate>
<ed:DateOverride>false</ed:DateOverride>
<ed:Premise>
<ed:ID>MEABC</ed:ID>
</ed:Premise>
</ed:Process>
<ed:Process>
<ed:ProcessTypeCode>CST</ed:ProcessTypeCode>
<ed:StartDate>2021-03-02</ed:StartDate>
<ed:EndDate>2021-03-10</ed:EndDate>
<ed:DateOverride>false</ed:DateOverride>
<ed:Premise>
<ed:ID>MEABC</ed:ID>
</ed:Premise>
</ed:Process>
</ed:Processes>
</ed:Product>
</ed:Products>
</ed:Certificate>
这是我迄今为止尝试过的方法 - 想通了如果我可以访问一个元素，我可以慢慢处理其余部分
if OBJECT_ID('tempdb..#XmlImportTest') is not null
drop table #XmlImportTest
CREATE TABLE #XmlImportTest(
xmlFileName VARCHAR(300) NOT NULL,
xml_data XML NOT NULL
);
DECLARE @xmlFileName VARCHAR(200) ='K:\Upload\CSNXML\WaybillXml.xml'
EXEC('INSERT INTO #XmlImportTest(xmlFileName, xml_data)
SELECT ''' + @xmlFileName + ''', xmlData
FROM(
SELECT *
FROM OPENROWSET (BULK ''' + @xmlFileName + ''', SINGLE_BLOB) AS XMLDATA
) AS FileImport (XMLDATA)
')
DECLARE @XML AS XML, @hDoc AS INT, @SQL NVARCHAR (MAX)
SELECT @xml = (SELECT xml_data from #XmlImportTest)
EXEC sp_xml_preparedocument @hDoc OUTPUT, @XML
DECLARE @XML AS XML, @hDoc AS INT, @SQL NVARCHAR (MAX)
SELECT @xml = (SELECT xml_data from #XmlImportTest)
EXEC sp_xml_preparedocument @hDoc OUTPUT, @XML
;WITH XMLNAMESPACES ('http://sancrt.mpi.govt.nz/ecert/2013/ed-multiple-submission-schema.xsd' AS ed)
SELECT
p.value(N'@ProductItem',N'nvarchar(10)') AS ProductItem
FROM
@xml.nodes('/Certificate')
AS A(p)
CROSS APPLY a.p.nodes(N'Products/Product') AS B(m);
我没有返回任何结果。
我也使用 OPENROWSET 得到相同的结果。
谁能告诉我如何访问这个数据元素。
您似乎对 XML 命名空间感到困惑。示例文档定义了两个名称空间 URI：
- http://sancrt.mpi.govt.nz/ecert/2013/ed-multiple-submission-schema.xsd，它没有前缀，因此被认为是文档的“默认”命名空间。
- http://sancrt.mpi.govt.nz/ecert/2013/ed-submission-schema.xsd，它使用了
ed 命名空间前缀，通过观察它，似乎在文档中的每个元素上都使用了它，所以也可能是默认命名空间。
您最简单的示例是尝试提取 /Certificate/Products/Product/ProductItem 元素的值，可以像这样简单地完成：
with xmlnamespaces (
default 'http://sancrt.mpi.govt.nz/ecert/2013/ed-submission-schema.xsd'
)
select productItem.value(N'text()[1]', N'int') as ProductItem
from @xml.nodes('/Certificate/Products/Product/ProductItem') as p(productItem);
将其扩展到 select 几个值，您可以看到此处使用 @ 来访问元素的 unitCode 属性：
with xmlnamespaces (
default 'http://sancrt.mpi.govt.nz/ecert/2013/ed-submission-schema.xsd'
)
select
product.value(N'(ProductItem/text())[1]', N'int') as ProductItem,
product.value(N'(Exhausted/text())[1]', N'bit') as Exhausted,
product.value(N'(Origin/text())[1]', N'nvarchar(2)') as Origin,
product.value(N'(GrossWeight/text())[1]', N'decimal(19,1)') as GrossWeight,
product.value(N'(GrossWeight/@unitCode)[1]', N'nvarchar(3)') as GrossWeightUnitCode
from @xml.nodes('/Certificate/Products/Product') as p(product);
从以上两个查询中应该清楚，使用 XPath 查询的命名空间前缀不必与 XML 文档中使用的相同 - 重要的是命名空间 URI 本身。文档中的前缀用于 link 元素（有时是属性）到它们的名称空间 URI，XPath 中使用的前缀可以完全不同，只要它们引用正确的名称空间 URI。例如此查询 returns 与上面第二个示例的结果相同，尽管它们在源 XML:
中没有 submission 前缀
with xmlnamespaces (
'http://sancrt.mpi.govt.nz/ecert/2013/ed-multiple-submission-schema.xsd' as multiple,
'http://sancrt.mpi.govt.nz/ecert/2013/ed-submission-schema.xsd' as submission
)
select
product.value(N'(submission:ProductItem/text())[1]', N'int') as ProductItem,
product.value(N'(submission:Exhausted/text())[1]', N'bit') as Exhausted,
product.value(N'(submission:Origin/text())[1]', N'nvarchar(2)') as Origin,
product.value(N'(submission:GrossWeight/text())[1]', N'decimal(19,1)') as GrossWeight,
product.value(N'(submission:GrossWeight/@unitCode)[1]', N'nvarchar(3)') as GrossWeightUnitCode,
product.value(N'(submission:Remarks/submission:Remark/submission:RemarkType/text())[1]', N'nvarchar(50)') as item_remark
from @xml.nodes('/submission:Certificate/submission:Products/submission:Product') as p(product);
我浏览过关于同一主题的各种帖子，但我似乎无法访问我的 XML 文件中的数据元素。
这是我的 XML 的片段：
<ed:Certificate xmlns="http://sancrt.mpi.govt.nz/ecert/2013/ed-multiple-submission-schema.xsd" xmlns:ed="http://sancrt.mpi.govt.nz/ecert/2013/ed-submission-schema.xsd"> <ed:Status Code="39">Approved</ed:Status> <ed:LastUpdatedDate>2021-03-10T14:20:55+13:00</ed:LastUpdatedDate> <ed:Identifiers>
<ed:CertificateID>NZL2021/MEABC/26913T</ed:CertificateID>
<ed:TemplateID>ED1.6</ed:TemplateID> </ed:Identifiers> <ed:Exhausted>true</ed:Exhausted> <ed:AutoApproval>false</ed:AutoApproval> <ed:DepartureDate>2021-03-10</ed:DepartureDate> <ed:Parties>
<ed:ConsignorID>MEABC</ed:ConsignorID>
<ed:ConsigneeID>FLIGHT1</ed:ConsigneeID> </ed:Parties> <ed:Transport>
<ed:Ports>
<ed:LoadingPortID>NZTRG</ed:LoadingPortID>
</ed:Ports>
<ed:FinalDestination>OAKLAND, United States</ed:FinalDestination>
<ed:TransportMode>1</ed:TransportMode>
<ed:LocalCarrier>MDH2</ed:LocalCarrier>
<ed:CarrierName> Ever Given</ed:CarrierName>
<ed:ConveyanceReference>V1234</ed:ConveyanceReference> </ed:Transport> <ed:Remarks>
<ed:Remark>
<ed:RemarkType>Unofficial Information</ed:RemarkType>
<ed:RemarkValue>Vessel ETD - 19/03/21\nTARE WEIGHT - 2880 KGS</ed:RemarkValue>
</ed:Remark> </ed:Remarks> <ed:Products>
<ed:Product>
<ed:ProductItem>1</ed:ProductItem>
<ed:Exhausted>true</ed:Exhausted>
<ed:Origin>AO</ed:Origin>
<ed:Description>BONELESS BEEF RUMP CAP</ed:Description>
<ed:CommonName>Bovine</ed:CommonName>
<ed:EligibilityCountries>
<ed:EligibilityCountryID>US</ed:EligibilityCountryID>
</ed:EligibilityCountries>
<ed:IntendedUse>consumption</ed:IntendedUse>
<ed:GrossWeight unitCode="KGM">296.4</ed:GrossWeight>
<ed:NetWeight unitCode="KGM">271.6</ed:NetWeight>
<ed:Remarks>
<ed:Remark>
<ed:RemarkType>Product Statement</ed:RemarkType>
<ed:RemarkValue>Item No. 81625\nLabel Approval 2659305 & 91060858</ed:RemarkValue>
</ed:Remark>
</ed:Remarks>
<ed:Classifications>
<ed:Classification>
<ed:ClassificationType>Temperature</ed:ClassificationType>
<ed:ClassificationValue>chilled</ed:ClassificationValue>
</ed:Classification>
<ed:Classification>
<ed:ClassificationType>New Zealand Harmonised System Code</ed:ClassificationType>
<ed:ClassificationValue>020130</ed:ClassificationValue>
</ed:Classification>
<ed:Classification>
<ed:ClassificationType>Halal Product</ed:ClassificationType>
<ed:ClassificationValue>1</ed:ClassificationValue>
</ed:Classification>
</ed:Classifications>
<ed:Containers>
<ed:Container>
<ed:ID>CGMU3099999</ed:ID>
<ed:Seals>
<ed:ID>NZMPIXXXXX</ed:ID>
</ed:Seals>
</ed:Container>
</ed:Containers>
<ed:Packaging>
<ed:Package>
<ed:Quantity>29</ed:Quantity>
<ed:Type>CT</ed:Type>
<ed:Level>1</ed:Level>
<ed:ShippingMarks>
<ed:Name>MABC\n26913</ed:Name>
</ed:ShippingMarks>
</ed:Package>
</ed:Packaging>
<ed:Processes>
<ed:Process>
<ed:ProcessTypeCode>SLT</ed:ProcessTypeCode>
<ed:StartDate>2021-03-01</ed:StartDate>
<ed:EndDate>2021-03-01</ed:EndDate>
<ed:DateOverride>false</ed:DateOverride>
<ed:Premise>
<ed:ID>MEABC</ed:ID>
</ed:Premise>
</ed:Process>
<ed:Process>
<ed:ProcessTypeCode>PRO</ed:ProcessTypeCode>
<ed:StartDate>2021-03-02</ed:StartDate>
<ed:EndDate>2021-03-02</ed:EndDate>
<ed:DateOverride>false</ed:DateOverride>
<ed:Premise>
<ed:ID>MEABC</ed:ID>
</ed:Premise>
</ed:Process>
<ed:Process>
<ed:ProcessTypeCode>CST</ed:ProcessTypeCode>
<ed:StartDate>2021-03-02</ed:StartDate>
<ed:EndDate>2021-03-10</ed:EndDate>
<ed:DateOverride>false</ed:DateOverride>
<ed:Premise>
<ed:ID>MEABC</ed:ID>
</ed:Premise>
</ed:Process>
</ed:Processes>
</ed:Product>
</ed:Products>
</ed:Certificate>
这是我迄今为止尝试过的方法 - 想通了如果我可以访问一个元素，我可以慢慢处理其余部分
if OBJECT_ID('tempdb..#XmlImportTest') is not null
drop table #XmlImportTest
CREATE TABLE #XmlImportTest(
xmlFileName VARCHAR(300) NOT NULL,
xml_data XML NOT NULL
);
DECLARE @xmlFileName VARCHAR(200) ='K:\Upload\CSNXML\WaybillXml.xml'
EXEC('INSERT INTO #XmlImportTest(xmlFileName, xml_data)
SELECT ''' + @xmlFileName + ''', xmlData
FROM(
SELECT *
FROM OPENROWSET (BULK ''' + @xmlFileName + ''', SINGLE_BLOB) AS XMLDATA
) AS FileImport (XMLDATA)
')
DECLARE @XML AS XML, @hDoc AS INT, @SQL NVARCHAR (MAX)
SELECT @xml = (SELECT xml_data from #XmlImportTest)
EXEC sp_xml_preparedocument @hDoc OUTPUT, @XML
DECLARE @XML AS XML, @hDoc AS INT, @SQL NVARCHAR (MAX)
SELECT @xml = (SELECT xml_data from #XmlImportTest)
EXEC sp_xml_preparedocument @hDoc OUTPUT, @XML
;WITH XMLNAMESPACES ('http://sancrt.mpi.govt.nz/ecert/2013/ed-multiple-submission-schema.xsd' AS ed)
SELECT
p.value(N'@ProductItem',N'nvarchar(10)') AS ProductItem
FROM
@xml.nodes('/Certificate')
AS A(p)
CROSS APPLY a.p.nodes(N'Products/Product') AS B(m);
我没有返回任何结果。
我也使用 OPENROWSET 得到相同的结果。
谁能告诉我如何访问这个数据元素。
您似乎对 XML 命名空间感到困惑。示例文档定义了两个名称空间 URI：
- http://sancrt.mpi.govt.nz/ecert/2013/ed-multiple-submission-schema.xsd，它没有前缀，因此被认为是文档的“默认”命名空间。
- http://sancrt.mpi.govt.nz/ecert/2013/ed-submission-schema.xsd，它使用了
ed命名空间前缀，通过观察它，似乎在文档中的每个元素上都使用了它，所以也可能是默认命名空间。
您最简单的示例是尝试提取 /Certificate/Products/Product/ProductItem 元素的值，可以像这样简单地完成：
with xmlnamespaces (
default 'http://sancrt.mpi.govt.nz/ecert/2013/ed-submission-schema.xsd'
)
select productItem.value(N'text()[1]', N'int') as ProductItem
from @xml.nodes('/Certificate/Products/Product/ProductItem') as p(productItem);
将其扩展到 select 几个值，您可以看到此处使用 @ 来访问元素的 unitCode 属性：
with xmlnamespaces (
default 'http://sancrt.mpi.govt.nz/ecert/2013/ed-submission-schema.xsd'
)
select
product.value(N'(ProductItem/text())[1]', N'int') as ProductItem,
product.value(N'(Exhausted/text())[1]', N'bit') as Exhausted,
product.value(N'(Origin/text())[1]', N'nvarchar(2)') as Origin,
product.value(N'(GrossWeight/text())[1]', N'decimal(19,1)') as GrossWeight,
product.value(N'(GrossWeight/@unitCode)[1]', N'nvarchar(3)') as GrossWeightUnitCode
from @xml.nodes('/Certificate/Products/Product') as p(product);
从以上两个查询中应该清楚，使用 XPath 查询的命名空间前缀不必与 XML 文档中使用的相同 - 重要的是命名空间 URI 本身。文档中的前缀用于 link 元素（有时是属性）到它们的名称空间 URI，XPath 中使用的前缀可以完全不同，只要它们引用正确的名称空间 URI。例如此查询 returns 与上面第二个示例的结果相同，尽管它们在源 XML:
中没有submission 前缀
with xmlnamespaces (
'http://sancrt.mpi.govt.nz/ecert/2013/ed-multiple-submission-schema.xsd' as multiple,
'http://sancrt.mpi.govt.nz/ecert/2013/ed-submission-schema.xsd' as submission
)
select
product.value(N'(submission:ProductItem/text())[1]', N'int') as ProductItem,
product.value(N'(submission:Exhausted/text())[1]', N'bit') as Exhausted,
product.value(N'(submission:Origin/text())[1]', N'nvarchar(2)') as Origin,
product.value(N'(submission:GrossWeight/text())[1]', N'decimal(19,1)') as GrossWeight,
product.value(N'(submission:GrossWeight/@unitCode)[1]', N'nvarchar(3)') as GrossWeightUnitCode,
product.value(N'(submission:Remarks/submission:Remark/submission:RemarkType/text())[1]', N'nvarchar(50)') as item_remark
from @xml.nodes('/submission:Certificate/submission:Products/submission:Product') as p(product);