描述： 我目前正在执行一项任务，涉及解析 XML 文档并将其数据插入 SQL Server 表中。 XML 文档包含发票信息，我需要循环遍历每张发票并将数据插入到两个表中：EDIInboundInvoiceHeader 和 EDIInboundInvoiceLineItems。但是，我在尝试插入数据时遇到了 XQuery 命名空间声明的问题。 问题： 当执行存储过程将XML数据插入表中时，我遇到以下错误：
消息 2229，级别 16，状态 1，过程 InsertEDIInboundInvoiceNew，第 60 行 [批量开始第 8 行] XQuery [query()]：名称“ns0”并不表示名称空间。
存储过程如下
USE [IntegrationStaging]
GO
/****** Object: StoredProcedure [dbo].[InsertEDIInboundInvoiceNew] Script Date: 8/9/2023 11:15:34 AM ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE PROCEDURE [dbo].[InsertEDIInboundInvoiceNew]
@InvoiceStatus VARCHAR(50),
@ProcessStatus VARCHAR(50) = NULL,
@IntegrationProcess VARCHAR(50) = NULL,
@InvoiceXML XML,
@StatusMessage VARCHAR(100) OUTPUT
AS
BEGIN
BEGIN TRY
DECLARE @InvoiceID VARCHAR(50)
DECLARE @BusinessUnit VARCHAR(50)
DECLARE @InvoiceNumber VARCHAR(50)
DECLARE @InvoiceAmount VARCHAR(100)
DECLARE @InvoiceDate DATE
DECLARE @SupplierName VARCHAR(100)
DECLARE @SupplierNumber VARCHAR(50)
DECLARE @SupplierSite VARCHAR(50)
DECLARE @InvoiceCurrency VARCHAR(10)
DECLARE @PaymentCurrency VARCHAR(10)
DECLARE @ImportSet VARCHAR(50)
DECLARE @InvoiceType VARCHAR(50)
DECLARE @LegalEntity VARCHAR(50)
DECLARE @CustomerTaxRegistrationNumber VARCHAR(50)
DECLARE @PaymentTerm VARCHAR(50)
DECLARE @TermsDate DATE
DECLARE @GoodsReceivedDate DATE
DECLARE @InvoiceReceiveDate DATE
DECLARE @AccountingDate DATE
DECLARE @PaymentMethod VARCHAR(50)
DECLARE @PayGroup VARCHAR(50)
DECLARE @LiabilityDistribution VARCHAR(50)
DECLARE @CreationDate DATETIME
DECLARE @Source VARCHAR(50)
DECLARE @IntegrationName VARCHAR(50)
DECLARE @Status VARCHAR(50)
DECLARE @LineNumber INT
DECLARE @LineType VARCHAR(50)
DECLARE @Amount VARCHAR(100)
DECLARE @InvoiceQuantity INT
DECLARE @UnitPrice VARCHAR(100)
DECLARE @UOM VARCHAR(50)
DECLARE @Description VARCHAR(100)
DECLARE @PONumber VARCHAR(50)
DECLARE @DistributionCombination VARCHAR(50)
DECLARE @DistributionSet VARCHAR(50)
DECLARE @TaxControlAmount VARCHAR(100)
DECLARE @TaxRegimeCode VARCHAR(50)
DECLARE @Tax VARCHAR(100)
DECLARE @TaxStatusCode VARCHAR(50)
DECLARE @TaxJurisdictionCode VARCHAR(50)
DECLARE @TaxRateCode VARCHAR(50)
DECLARE @TaxRate VARCHAR(50)
DECLARE @WithholdingTaxGroup VARCHAR(50)
-- Iterate through each invoice in the XML
DECLARE @InvoiceNodes XML
SET @InvoiceNodes = @InvoiceXML.query('/ns0:InvoiceCanonical')
DECLARE @InvoiceCount INT
SELECT @InvoiceCount = @InvoiceNodes.value('count(/ns0:InvoiceCanonical)', 'INT')
DECLARE @CurrentInvoice INT = 1
WHILE @CurrentInvoice <= @InvoiceCount
BEGIN
SELECT
@InvoiceID = InvoiceHeader.value('(ns0:InvoiceID)[1]', 'VARCHAR(50)'),
@BusinessUnit = InvoiceHeader.value('(ns0:BusinessUnit)[1]', 'VARCHAR(50)'),
@InvoiceNumber = InvoiceHeader.value('(ns0:InvoiceNumber)[1]', 'VARCHAR(50)'),
@InvoiceAmount = InvoiceHeader.value('(ns0:InvoiceAmount)[1]', 'VARCHAR(100)'),
@InvoiceDate = InvoiceHeader.value('(ns0:InvoiceDate)[1]', 'DATE'),
@SupplierName = InvoiceHeader.value('(ns0:SupplierName)[1]', 'VARCHAR(100)'),
@SupplierNumber = InvoiceHeader.value('(ns0:SupplierNumber)[1]', 'VARCHAR(50)'),
@SupplierSite = InvoiceHeader.value('(ns0:SupplierSite)[1]', 'VARCHAR(50)'),
@InvoiceCurrency = InvoiceHeader.value('(ns0:InvoiceCurrency)[1]', 'VARCHAR(10)'),
@PaymentCurrency = InvoiceHeader.value('(ns0:PaymentCurrency)[1]', 'VARCHAR(10)'),
@ImportSet = InvoiceHeader.value('(ns0:ImportSet)[1]', 'VARCHAR(50)'),
@InvoiceType = InvoiceHeader.value('(ns0:InvoiceType)[1]', 'VARCHAR(50)'),
@LegalEntity = InvoiceHeader.value('(ns0:LegalEntity)[1]', 'VARCHAR(50)'),
@CustomerTaxRegistrationNumber = InvoiceHeader.value('(ns0:CustomerTaxRegistrationNumber)[1]', 'VARCHAR(50)'),
@PaymentTerm = InvoiceHeader.value('(ns0:PaymentTerm)[1]', 'VARCHAR(50)'),
@TermsDate = InvoiceHeader.value('(ns0:TermsDate)[1]', 'DATE'),
@GoodsReceivedDate = InvoiceHeader.value('(ns0:GoodsReceivedDate)[1]', 'DATE'),
@InvoiceReceiveDate = InvoiceHeader.value('(ns0:InvoiceReceiveDate)[1]', 'DATE'),
@AccountingDate = InvoiceHeader.value('(ns0:AccountingDate)[1]', 'DATE'),
@PaymentMethod = InvoiceHeader.value('(ns0:PaymentMethod)[1]', 'VARCHAR(50)'),
@PayGroup = InvoiceHeader.value('(ns0:PayGroup)[1]', 'VARCHAR(50)'),
@LiabilityDistribution = InvoiceHeader.value('(ns0:LiabilityDistribution)[1]', 'VARCHAR(50)'),
@CreationDate = InvoiceHeader.value('(ns0:CreationDate)[1]', 'DATETIME'),
@Source = InvoiceHeader.value('(ns0:Source)[1]', 'VARCHAR(50)'),
@IntegrationName = InvoiceHeader.value('(ns0:IntegrationName)[1]', 'VARCHAR(50)'),
@Status = InvoiceHeader.value('(ns0:Status)[1]', 'VARCHAR(50)')
FROM @InvoiceXML.nodes('/ns0:InvoiceCanonical[' + CAST(@CurrentInvoice AS VARCHAR) + ']/ns0:Header') AS InvoiceHeader(InvoiceHeader)
-- Insert data into EDIInboundInvoiceHeader
INSERT INTO EDIInboundInvoiceHeader (
InvoiceStatus, ProcessStatus, IntegrationProcess, InvoiceID, BusinessUnit, InvoiceNumber, InvoiceAmount, InvoiceDate,
SupplierName, SupplierNumber, SupplierSite, InvoiceCurrency,
PaymentCurrency, ImportSet, InvoiceType, LegalEntity,
CustomerTaxRegistrationNumber, PaymentTerm, TermsDate,
GoodsReceivedDate, InvoiceReceiveDate, AccountingDate,
PaymentMethod, PayGroup, LiabilityDistribution, CreationDate,
Source, IntegrationName, Status
)
VALUES (
@InvoiceStatus, @ProcessStatus, @IntegrationProcess, @InvoiceID, @BusinessUnit, @InvoiceNumber, @InvoiceAmount, @InvoiceDate,
@SupplierName, @SupplierNumber, @SupplierSite, @InvoiceCurrency,
@PaymentCurrency, @ImportSet, @InvoiceType, @LegalEntity,
@CustomerTaxRegistrationNumber, @PaymentTerm, @TermsDate,
@GoodsReceivedDate, @InvoiceReceiveDate, @AccountingDate,
@PaymentMethod, @PayGroup, @LiabilityDistribution, @CreationDate,
@Source, @IntegrationName, @Status
)
DECLARE @InvoiceHeaderID INT
SET @InvoiceHeaderID = SCOPE_IDENTITY()
-- Insert data into EDIInboundInvoiceLineItems
INSERT INTO EDIInboundInvoiceLineItems (InvoiceHeaderID, LineNumber, LineType, Amount, InvoiceQuantity, UnitPrice, UOM, Description, PONumber, DistributionCombination, DistributionSet, AccountingDate, TaxControlAmount, TaxRegimeCode, Tax, TaxStatusCode, TaxJurisdictionCode, TaxRateCode, TaxRate, WithholdingTaxGroup)
SELECT
@InvoiceHeaderID,
InvoiceItem.value('(ns0:LineNumber)[1]', 'INT'),
InvoiceItem.value('(ns0:LineType)[1]', 'VARCHAR(50)'),
-- ... other attribute extractions ...
InvoiceItem.value('(ns0:Amount)[1]', 'VARCHAR(100)'),
InvoiceItem.value('(ns0:InvoiceQuantity)[1]', 'INT'),
InvoiceItem.value('(ns0:UnitPrice)[1]', 'VARCHAR(100)'),
InvoiceItem.value('(ns0:UOM)[1]', 'VARCHAR(50)'),
InvoiceItem.value('(ns0:Description)[1]', 'VARCHAR(100)'),
InvoiceItem.value('(ns0:PONumber)[1]', 'VARCHAR(50)'),
InvoiceItem.value('(ns0:DistributionCombination)[1]', 'VARCHAR(50)'),
InvoiceItem.value('(ns0:DistributionSet)[1]', 'VARCHAR(50)'),
InvoiceItem.value('(ns0:AccountingDate)[1]', 'DATE'),
InvoiceItem.value('(ns0:TaxControlAmount)[1]', 'VARCHAR(100)'),
InvoiceItem.value('(ns0:TaxRegimeCode)[1]', 'VARCHAR(50)'),
InvoiceItem.value('(ns0:Tax)[1]', 'VARCHAR(100)'),
InvoiceItem.value('(ns0:TaxStatusCode)[1]', 'VARCHAR(50)'),
InvoiceItem.value('(ns0:TaxJurisdictionCode)[1]', 'VARCHAR(50)'),
InvoiceItem.value('(ns0:TaxRateCode)[1]', 'VARCHAR(50)'),
InvoiceItem.value('(ns0:TaxRate)[1]', 'VARCHAR(50)'),
InvoiceItem.value('(ns0:WithholdingTaxGroup)[1]', 'VARCHAR(50)')
FROM @InvoiceXML.nodes('/ns0:InvoiceCanonical[' + CAST(@CurrentInvoice AS VARCHAR) + ']/ns0:Detail') AS InvoiceItem(InvoiceItem)
SET @CurrentInvoice = @CurrentInvoice + 1
END
SET @StatusMessage = 'Success' -- Output message on success
END TRY
BEGIN CATCH
SET @StatusMessage = ERROR_MESSAGE() -- Return error message on failure
END CATCH
END
XML 输入如下
<ns0:InvoiceCanonical xmlns:ns0="namespace_URL">
<Header xmlns:ns0="namespace_URL">
<InvoiceID>INV0001</InvoiceID>
<BusinessUnit>BU123</BusinessUnit>
<InvoiceNumber>INV123456</InvoiceNumber>
<InvoiceAmount>1500.00</InvoiceAmount>
<InvoiceDate>2023-08-01</InvoiceDate>
<SupplierName>ABC Supplier</SupplierName>
<SupplierNumber>SUP001</SupplierNumber>
<SupplierSite>Main Site</SupplierSite>
<InvoiceCurrency>USD</InvoiceCurrency>
<PaymentCurrency>USD</PaymentCurrency>
<ImportSet>ImportSet_123</ImportSet>
<InvoiceType>Regular</InvoiceType>
<LegalEntity>LE001</LegalEntity>
<CustomerTaxRegistrationNumber>1234567890</CustomerTaxRegistrationNumber>
<PaymentTerm>Net 30</PaymentTerm>
<TermsDate>2023-09-01</TermsDate>
<GoodsReceivedDate>2023-07-25</GoodsReceivedDate>
<InvoiceReceiveDate>2023-08-02</InvoiceReceiveDate>
<AccountingDate>2023-08-02</AccountingDate>
<PaymentMethod>Bank Transfer</PaymentMethod>
<PayGroup>PG001</PayGroup>
<LiabilityDistribution>LD001</LiabilityDistribution>
<CreationDate>2023-08-01T08:00:00</CreationDate>
<Source>System A</Source>
<IntegrationName>Integration_ABC</IntegrationName>
<Status>Approved</Status>
</Header>
<Detail xmlns:ns0="namespace_URL">
<InvoiceID>INV0001</InvoiceID>
<LineNumber>1</LineNumber>
<LineType>Item</LineType>
<Amount>500.00</Amount>
<InvoiceQuantity>10</InvoiceQuantity>
<UnitPrice>50.00</UnitPrice>
<UOM>EA</UOM>
<Description>Product A</Description>
<PONumber>PO1234</PONumber>
<DistributionCombination>DC123</DistributionCombination>
<DistributionSet>DS001</DistributionSet>
<AccountingDate>2023-08-02</AccountingDate>
<TaxControlAmount>50.00</TaxControlAmount>
<TaxRegimeCode>TAXREG001</TaxRegimeCode>
<Tax>10.00</Tax>
<TaxStatusCode>TAXSTAT001</TaxStatusCode>
<TaxJurisdictionCodeTaxJurisdictionCode>TAXJUR001</TaxJurisdictionCodeTaxJurisdictionCode>
<TaxRateCode>TAXRATE001</TaxRateCode>
<TaxRate>10%</TaxRate>
<WithholdingTaxGroup>WTG001</WithholdingTaxGroup>
</Detail>
<Detail xmlns:ns0="namespace_URL">
<InvoiceID>INV0001</InvoiceID>
<LineNumber>2</LineNumber>
<LineType>Item</LineType>
<Amount>800.00</Amount>
<InvoiceQuantity>5</InvoiceQuantity>
<UnitPrice>160.00</UnitPrice>
<UOM>EA</UOM>
<Description>Product B</Description>
<PONumber>PO5678</PONumber>
<DistributionCombination>DC456</DistributionCombination>
<DistributionSet>DS002</DistributionSet>
<AccountingDate>2023-08-03</AccountingDate>
<TaxControlAmount>80.00</TaxControlAmount>
<TaxRegimeCode>TAXREG002</TaxRegimeCode>
<Tax>16.00</Tax>
<TaxStatusCode>TAXSTAT002</TaxStatusCode>
<TaxJurisdictionCodeTaxJurisdictionCode>TAXJUR002</TaxJurisdictionCodeTaxJurisdictionCode>
<TaxRateCode>TAXRATE002</TaxRateCode>
<TaxRate>20%</TaxRate>
<WithholdingTaxGroup>WTG002</WithholdingTaxGroup>
</Detail>
<Detail xmlns:ns0="namespace_URL">
<InvoiceID>INV0001</InvoiceID>
<LineNumber>3</LineNumber>
<LineType>Item</LineType>
<Amount>300.00</Amount>
<InvoiceQuantity>3</InvoiceQuantity>
<UnitPrice>100.00</UnitPrice>
<UOM>EA</UOM>
<Description>Product C</Description>
<PONumber>PO9090</PONumber>
<DistributionCombination>DC789</DistributionCombination>
<DistributionSet>DS003</DistributionSet>
<AccountingDate>2023-08-03</AccountingDate>
<TaxControlAmount>30.00</TaxControlAmount>
<TaxRegimeCode>TAXREG003</TaxRegimeCode>
<Tax>9.00</Tax>
<TaxStatusCode>TAXSTAT003</TaxStatusCode>
<TaxJurisdictionCodeTaxJurisdictionCode>TAXJUR003</TaxJurisdictionCodeTaxJurisdictionCode>
<TaxRateCode>TAXRATE003</TaxRateCode>
<TaxRate>9%</TaxRate>
<WithholdingTaxGroup>WTG003</WithholdingTaxGroup>
</Detail>
</ns0:InvoiceCanonical>
<ns0:InvoiceCanonical xmlns:ns0="namespace_URL">
<Header xmlns:ns0="http://Invoice.Common.Schemas.InvoiceCanonical">
<InvoiceID>INV0002</InvoiceID>
<BusinessUnit>BU456</BusinessUnit>
<InvoiceNumber>INV789012</InvoiceNumber>
<InvoiceAmount>2500.00</InvoiceAmount>
<InvoiceDate>2023-08-05</InvoiceDate>
<SupplierName>XYZ Suppliers</SupplierName>
<SupplierNumber>SUP002</SupplierNumber>
<SupplierSite>Secondary Site</SupplierSite>
<InvoiceCurrency>EUR</InvoiceCurrency>
<PaymentCurrency>EUR</PaymentCurrency>
<ImportSet>ImportSet_456</ImportSet>
<InvoiceType>Special</InvoiceType>
<LegalEntity>LE002</LegalEntity>
<CustomerTaxRegistrationNumber>9876543210</CustomerTaxRegistrationNumber>
<PaymentTerm>Net 45</PaymentTerm>
<TermsDate>2023-09-15</TermsDate>
<GoodsReceivedDate>2023-08-01</GoodsReceivedDate>
<InvoiceReceiveDate>2023-08-06</InvoiceReceiveDate>
<AccountingDate>2023-08-06</AccountingDate>
<PaymentMethod>Credit Card</PaymentMethod>
<PayGroup>PG002</PayGroup>
<LiabilityDistribution>LD002</LiabilityDistribution>
<CreationDate>2023-08-05T09:30:00</CreationDate>
<Source>System B</Source>
<IntegrationName>Integration_XYZ</IntegrationName>
<Status>Pending Approval</Status>
</Header>
<Detail xmlns:ns0="namespace_URL">
<InvoiceID>INV0002</InvoiceID>
<LineNumber>1</LineNumber>
<LineType>Item</LineType>
<Amount>800.00</Amount>
<InvoiceQuantity>8</InvoiceQuantity>
<UnitPrice>100.00</UnitPrice>
<UOM>EA</UOM>
<Description>Product X</Description>
<PONumber>PO9876</PONumber>
<DistributionCombination>DC987</DistributionCombination>
<DistributionSet>DS004</DistributionSet>
<AccountingDate>2023-08-06</AccountingDate>
<TaxControlAmount>80.00</TaxControlAmount>
<TaxRegimeCode>TAXREG004</TaxRegimeCode>
<Tax>10.00</Tax>
<TaxStatusCode>TAXSTAT004</TaxStatusCode>
<TaxJurisdictionCodeTaxJurisdictionCode>TAXJUR004</TaxJurisdictionCodeTaxJurisdictionCode>
<TaxRateCode>TAXRATE004</TaxRateCode>
<TaxRate>12.5%</TaxRate>
<WithholdingTaxGroup>WTG004</WithholdingTaxGroup>
</Detail>
</ns0:InvoiceCanonical>
我希望存储过程能够成功循环遍历 XML 文档中的每张发票，提取必要的属性，并将它们插入到相应的 SQL Server 表中。应正确识别 XQuery 命名空间以避免上述错误。
您需要先声明命名空间，然后才能使用它们查询 XML。
请看下面。
SQL
SET @InvoiceNodes = @InvoiceXML.query('declare namespace ns0="namespace_URL";
/ns0:InvoiceCanonical')
DECLARE @InvoiceCount INT
SELECT @InvoiceCount = @InvoiceNodes.value('declare namespace ns0="namespace_URL";
count(/ns0:InvoiceCanonical)', 'INT')
但是您的代码将在下面失败并出现以下错误：
Msg 8172, Level 16, State 1, Line ...
The argument 1 of the XML data type method "nodes" must be a string literal.
因为FROM子句不正确：
FROM @InvoiceXML.nodes('/ns0:InvoiceCanonical[' + CAST(@CurrentInvoice AS VARCHAR) + ']/ns0:Header') AS InvoiceHeader(InvoiceHeader)
再次使用命名空间声明的解决方案：
WITH XMLNAMESPACES('namespace_URL' AS ns0)
SELECT
@InvoiceID = InvoiceHeader.value('(ns0:InvoiceID)[1]', 'VARCHAR(50)'),
...
FROM @InvoiceXML.nodes('/ns0:InvoiceCanonical[sql:variable("@CurrentInvoice")]/ns0:Header') AS InvoiceHeader(InvoiceHeader)