我需要做以下事情：
我将XML存储在数据类型为xmldata的表中。在XML中，我对XML中的每个发票行重复了以下内容。
<InvoiceDetailItem invoiceLineNumber="1" quantity="1">
我需要从XML中的每个数量字段中获取值。
我试过了：
SELECT SUBSTR(REPLACE(REPLACE(EXTRACT(BATCH_XML,'//InvoiceDetailItem '),'<InvoiceDetailItem',''),'</InvoiceDetailItem>',''),
INSTR(REPLACE(REPLACE(EXTRACT(BATCH_XML,'//InvoiceDetailItem '),'<InvoiceDetailItem',''),'</InvoiceDetailItem>',''),'quantity', 1, V_LCNTR)+10,
INSTR(REPLACE(REPLACE(EXTRACT(BATCH_XML,'//InvoiceDetailItem '),'<InvoiceDetailItem',''),'</InvoiceDetailItem>',''),'UnitOfMeasure')-40)
FROM INVOICE_INFO
其中BATCH_XML是表中xmldata类型列的名称，V_LCNTR是XML中字段出现的编号。
这适用于小发票但是当它们变大时我会收到错误：
ORA-19011：字符串缓冲区太小19011. 00000 - ＆＃34;字符串缓冲区太小＆＃34; 原因：要求的字符串结果太大而无法返回 行动：取而代之的是结果
我看过，但所有示例似乎都只涉及简单的< tag >x< tag >，我无法找到任何可以帮助我获得价值的内容< tag x="1" y="2" >，我需要获取价值是的。
xml是
`<?xml version="1.0" encoding="utf-8"?>
<cXML xml:lang="en-GB" version="1.2.014" payloadID="elcom (inv 1).rdeint1b.2015.12.02.11.59.47.377.x.xlsx.xml" timestamp="2015-12-02T16:35:13-00:00">
<Header>
<From>
<Credential domain="DUNS">
<Identity>100000103885</Identity>
</Credential>
</From>
<To>
<Credential domain="NetworkID">
<Identity></Identity>
</Credential>
</To>
<Sender>
<Credential domain="DUNS">
<Identity></Identity>
<SharedSecret></SharedSecret>
</Credential>
<UserAgent>CloudTrade</UserAgent>
</Sender>
</Header>
<Request>
<InvoiceDetailRequest>
<InvoiceDetailRequestHeader invoiceID="RDEINT1b" purpose="standard" operation="new" invoiceDate="2015-12-01T00:00:00-00:00">
<InvoiceDetailHeaderIndicator isVatRecoverable="yes" />
<InvoiceDetailLineIndicator isTaxInLine="yes" />
<InvoicePartner>
<Contact role="issuerOfInvoice" addressID="830045568">
<Name xml:lang="en-GB">BRAKES</Name>
<PostalAddress>
<DeliverTo></DeliverTo>
<Street></Street>
<Street></Street>
<City></City>
<State></State>
<PostalCode></PostalCode>
<Country isoCountryCode=""></Country>
</PostalAddress>
<Email></Email>
<Phone name="DDI">
<TelephoneNumber>
<CountryCode isoCountryCode="" />
<AreaOrCityCode />
<Number></Number>
</TelephoneNumber>
</Phone>
</Contact>
<IdReference identifier="830045568" domain="vatID" />
<IdReference identifier="830045568" domain="supplierTaxID" />
</InvoicePartner>
<InvoicePartner>
<Contact role="soldTo" addressID="">
<Name xml:lang="en-GB">South Lanarkshire Council</Name>
<PostalAddress>
<DeliverTo></DeliverTo>
<Street>Almada Street</Street>
<Street></Street>
<City>Hamilton</City>
<State></State>
<PostalCode>ML30AL</PostalCode>
<Country isoCountryCode="GBR">United Kingdom</Country>
</PostalAddress>
<Email></Email>
<Phone name="DDI">
<TelephoneNumber>
<CountryCode isoCountryCode="GBR" />
<AreaOrCityCode />
<Number></Number>
</TelephoneNumber>
</Phone>
</Contact>
<IdReference identifier="" domain="vatID" />
<IdReference identifier="" domain="supplierTaxID" />
</InvoicePartner>
<InvoicePartner>
<Contact role="billTo" addressID="">
<Name xml:lang="en-GB"></Name>
<PostalAddress>
<DeliverTo></DeliverTo>
<Street></Street>
<Street></Street>
<City></City>
<State></State>
<PostalCode></PostalCode>
<Country isoCountryCode=""></Country>
</PostalAddress>
<Email></Email>
<Phone name="DDI">
<TelephoneNumber>
<CountryCode isoCountryCode="" />
<AreaOrCityCode />
<Number></Number>
</TelephoneNumber>
</Phone>
</Contact>
<IdReference identifier="" domain="vatID" />
<IdReference identifier="" domain="supplierTaxID" />
</InvoicePartner>
<InvoicePartner>
<Contact role="remitTo" addressID="">
<Name xml:lang="en-GB"></Name>
<PostalAddress>
<DeliverTo></DeliverTo>
<Street></Street>
<Street></Street>
<City></City>
<State></State>
<PostalCode></PostalCode>
<Country isoCountryCode=""></Country>
</PostalAddress>
<Email></Email>
<Phone name="DDI">
<TelephoneNumber>
<CountryCode isoCountryCode="" />
<AreaOrCityCode />
<Number></Number>
</TelephoneNumber>
</Phone>
</Contact>
<IdReference identifier="" domain="vatID" />
<IdReference identifier="" domain="supplierTaxID" />
</InvoicePartner>
<Comments></Comments>
<Extrinsic name="BuyersCodeForSupplier">100000103885</Extrinsic>
<Extrinsic name="CostCentre"></Extrinsic>
<Extrinsic name="SupplierBankAccountNumber"></Extrinsic>
<Extrinsic name="SupplierIBAN"></Extrinsic>
<Extrinsic name="ContractOrderReference"></Extrinsic>
<Extrinsic name="DeliveryNoteReference"></Extrinsic>
<Extrinsic name="SupplierPortalInvoiceID">elcom south lanarkshire (inv 1).bakes_161115_rdeint1b.2015.12.02.11.59.47.377.x.xlsx.pdf</Extrinsic>
</InvoiceDetailRequestHeader>
<InvoiceDetailOrder>
<InvoiceDetailOrderInfo>
<OrderReference orderID="3865122">
<DocumentReference payloadID="" />
</OrderReference>
<SupplierOrderInfo orderID="" />
</InvoiceDetailOrderInfo>
<InvoiceDetailItem invoiceLineNumber="1" quantity="1">
<UnitOfMeasure>pack</UnitOfMeasure>
<UnitPrice>
<Money currency="GBP">23.7300</Money>
</UnitPrice>
<InvoiceDetailItemReference lineNumber="1">
<ItemID>
<SupplierPartID>30846</SupplierPartID>
<SupplierPartAuxiliaryID></SupplierPartAuxiliaryID>
</ItemID>
<Description xml:lang="en-GB">NON CORE Brake Ciabatta Rolls</Description>
</InvoiceDetailItemReference>
<SubtotalAmount>
<Money currency="GBP">23.73</Money>
</SubtotalAmount>
<Tax>
<Money currency="GBP">0.00</Money>
<Description xml:lang="en-GB">Total Line Item Tax</Description>
<TaxDetail purpose="tax" category="vat" percentageRate="0.00">
<TaxableAmount>
<Money currency="GBP">23.73</Money>
</TaxableAmount>
<TaxAmount>
<Money currency="GBP">0.00</Money>
</TaxAmount>
<TaxLocation xml:lang="en-GB">GB</TaxLocation>
<Description xml:lang="en-GB">Z</Description>
</TaxDetail>
</Tax>
<GrossAmount>
<Money currency="GBP">23.73</Money>
</GrossAmount>
<NetAmount>
<Money currency="GBP">23.73</Money>
</NetAmount>
<Extrinsic name="TaxRefCode">Z</Extrinsic>
<Extrinsic name="LinePurchaseOrderNumber"></Extrinsic>
<Extrinsic name="QuantityOrdered"></Extrinsic>
</InvoiceDetailItem>
<InvoiceDetailItem invoiceLineNumber="2" quantity="2">
<UnitOfMeasure>pack</UnitOfMeasure>
<UnitPrice>
<Money currency="GBP">14.7000</Money>
</UnitPrice>
<InvoiceDetailItemReference lineNumber="2">
<ItemID>
<SupplierPartID>30847</SupplierPartID>
<SupplierPartAuxiliaryID></SupplierPartAuxiliaryID>
</ItemID>
<Description xml:lang="en-GB">NON CORE Champion Steak Kidney</Description>
</InvoiceDetailItemReference>
<SubtotalAmount>
<Money currency="GBP">29.40</Money>
</SubtotalAmount>
<Tax>
<Money currency="GBP">0.00</Money>
<Description xml:lang="en-GB">Total Line Item Tax</Description>
<TaxDetail purpose="tax" category="vat" percentageRate="0.00">
<TaxableAmount>
<Money currency="GBP">29.40</Money>
</TaxableAmount>
<TaxAmount>
<Money currency="GBP">0.00</Money>
</TaxAmount>
<TaxLocation xml:lang="en-GB">GB</TaxLocation>
<Description xml:lang="en-GB">Z</Description>
</TaxDetail>
</Tax>
<GrossAmount>
<Money currency="GBP">29.40</Money>
</GrossAmount>
<NetAmount>
<Money currency="GBP">29.40</Money>
</NetAmount>
<Extrinsic name="TaxRefCode">Z</Extrinsic>
<Extrinsic name="LinePurchaseOrderNumber"></Extrinsic>
<Extrinsic name="QuantityOrdered"></Extrinsic>
</InvoiceDetailItem>
<InvoiceDetailItem invoiceLineNumber="3" quantity="3">
<UnitOfMeasure>pack</UnitOfMeasure>
<UnitPrice>
<Money currency="GBP">13.3700</Money>
</UnitPrice>
<InvoiceDetailItemReference lineNumber="3">
<ItemID>
<SupplierPartID>30850</SupplierPartID>
<SupplierPartAuxiliaryID></SupplierPartAuxiliaryID>
</ItemID>
<Description xml:lang="en-GB">NON CORE Champion Chicken </Description>
</InvoiceDetailItemReference>
<SubtotalAmount>
<Money currency="GBP">40.11</Money>
</SubtotalAmount>
<Tax>
<Money currency="GBP">0.00</Money>
<Description xml:lang="en-GB">Total Line Item Tax</Description>
<TaxDetail purpose="tax" category="vat" percentageRate="0.00">
<TaxableAmount>
<Money currency="GBP">40.11</Money>
</TaxableAmount>
<TaxAmount>
<Money currency="GBP">0.00</Money>
</TaxAmount>
<TaxLocation xml:lang="en-GB">GB</TaxLocation>
<Description xml:lang="en-GB">Z</Description>
</TaxDetail>
</Tax>
<GrossAmount>
<Money currency="GBP">40.11</Money>
</GrossAmount>
<NetAmount>
<Money currency="GBP">40.11</Money>
</NetAmount>
<Extrinsic name="TaxRefCode">Z</Extrinsic>
<Extrinsic name="LinePurchaseOrderNumber"></Extrinsic>
<Extrinsic name="QuantityOrdered"></Extrinsic>
</InvoiceDetailItem>
<InvoiceDetailItem invoiceLineNumber="4" quantity="1">
<UnitOfMeasure>pack</UnitOfMeasure>
<UnitPrice>
<Money currency="GBP">23.7300</Money>
</UnitPrice>
<InvoiceDetailItemReference lineNumber="4">
<ItemID>
<SupplierPartID>30846</SupplierPartID>
<SupplierPartAuxiliaryID></SupplierPartAuxiliaryID>
</ItemID>
<Description xml:lang="en-GB">NON CORE Brake Ciabatta Rolls</Description>
</InvoiceDetailItemReference>
<SubtotalAmount>
<Money currency="GBP">23.73</Money>
</SubtotalAmount>
<Tax>
<Money currency="GBP">0.00</Money>
<Description xml:lang="en-GB">Total Line Item Tax</Description>
<TaxDetail purpose="tax" category="vat" percentageRate="0.00">
<TaxableAmount>
<Money currency="GBP">23.73</Money>
</TaxableAmount>
<TaxAmount>
<Money currency="GBP">0.00</Money>
</TaxAmount>
<TaxLocation xml:lang="en-GB">GB</TaxLocation>
<Description xml:lang="en-GB">Z</Description>
</TaxDetail>
</Tax>
<GrossAmount>
<Money currency="GBP">23.73</Money>
</GrossAmount>
<NetAmount>
<Money currency="GBP">23.73</Money>
</NetAmount>
<Extrinsic name="TaxRefCode">Z</Extrinsic>
<Extrinsic name="LinePurchaseOrderNumber"></Extrinsic>
<Extrinsic name="QuantityOrdered"></Extrinsic>
</InvoiceDetailItem>
<InvoiceDetailItem invoiceLineNumber="5" quantity="2">
<UnitOfMeasure>pack</UnitOfMeasure>
<UnitPrice>
<Money currency="GBP">14.7000</Money>
</UnitPrice>
<InvoiceDetailItemReference lineNumber="5">
<ItemID>
<SupplierPartID>30847</SupplierPartID>
<SupplierPartAuxiliaryID></SupplierPartAuxiliaryID>
</ItemID>
<Description xml:lang="en-GB">NON CORE Champion Steak Kidney</Description>
</InvoiceDetailItemReference>
<SubtotalAmount>
<Money currency="GBP">29.40</Money>
</SubtotalAmount>
<Tax>
<Money currency="GBP">0.00</Money>
<Description xml:lang="en-GB">Total Line Item Tax</Description>
<TaxDetail purpose="tax" category="vat" percentageRate="0.00">
<TaxableAmount>
<Money currency="GBP">29.40</Money>
</TaxableAmount>
<TaxAmount>
<Money currency="GBP">0.00</Money>
</TaxAmount>
<TaxLocation xml:lang="en-GB">GB</TaxLocation>
<Description xml:lang="en-GB">Z</Description>
</TaxDetail>
</Tax>
<GrossAmount>
<Money currency="GBP">29.40</Money>
</GrossAmount>
<NetAmount>
<Money currency="GBP">29.40</Money>
</NetAmount>
<Extrinsic name="TaxRefCode">Z</Extrinsic>
<Extrinsic name="LinePurchaseOrderNumber"></Extrinsic>
<Extrinsic name="QuantityOrdered"></Extrinsic>
</InvoiceDetailItem>
<InvoiceDetailItem invoiceLineNumber="6" quantity="3">
<UnitOfMeasure>pack</UnitOfMeasure>
<UnitPrice>
<Money currency="GBP">13.3700</Money>
</UnitPrice>
<InvoiceDetailItemReference lineNumber="6">
<ItemID>
<SupplierPartID>30850</SupplierPartID>
<SupplierPartAuxiliaryID></SupplierPartAuxiliaryID>
</ItemID>
<Description xml:lang="en-GB">NON CORE Champion Chicken </Description>
</InvoiceDetailItemReference>
<SubtotalAmount>
<Money currency="GBP">40.11</Money>
</SubtotalAmount>
<Tax>
<Money currency="GBP">0.00</Money>
<Description xml:lang="en-GB">Total Line Item Tax</Description>
<TaxDetail purpose="tax" category="vat" percentageRate="0.00">
<TaxableAmount>
<Money currency="GBP">40.11</Money>
</TaxableAmount>
<TaxAmount>
<Money currency="GBP">0.00</Money>
</TaxAmount>
<TaxLocation xml:lang="en-GB">GB</TaxLocation>
<Description xml:lang="en-GB">Z</Description>
</TaxDetail>
</Tax>
<GrossAmount>
<Money currency="GBP">40.11</Money>
</GrossAmount>
<NetAmount>
<Money currency="GBP">40.11</Money>
</NetAmount>
<Extrinsic name="TaxRefCode">Z</Extrinsic>
<Extrinsic name="LinePurchaseOrderNumber"></Extrinsic>
<Extrinsic name="QuantityOrdered"></Extrinsic>
</InvoiceDetailItem>
<InvoiceDetailItem invoiceLineNumber="7" quantity="3">
<UnitOfMeasure>pack</UnitOfMeasure>
<UnitPrice>
<Money currency="GBP">13.3700</Money>
</UnitPrice>
<InvoiceDetailItemReference lineNumber="7">
<ItemID>
<SupplierPartID>30850</SupplierPartID>
<SupplierPartAuxiliaryID></SupplierPartAuxiliaryID>
</ItemID>
<Description xml:lang="en-GB">NON CORE Champion Chicken </Description>
</InvoiceDetailItemReference>
<SubtotalAmount>
<Money currency="GBP">40.11</Money>
</SubtotalAmount>
<Tax>
<Money currency="GBP">0.00</Money>
<Description xml:lang="en-GB">Total Line Item Tax</Description>
<TaxDetail purpose="tax" category="vat" percentageRate="0.00">
<TaxableAmount>
<Money currency="GBP">40.11</Money>
</TaxableAmount>
<TaxAmount>
<Money currency="GBP">0.00</Money>
</TaxAmount>
<TaxLocation xml:lang="en-GB">GB</TaxLocation>
<Description xml:lang="en-GB">Z</Description>
</TaxDetail>
</Tax>
<GrossAmount>
<Money currency="GBP">40.11</Money>
</GrossAmount>
<NetAmount>
<Money currency="GBP">40.11</Money>
</NetAmount>
<Extrinsic name="TaxRefCode">Z</Extrinsic>
<Extrinsic name="LinePurchaseOrderNumber"></Extrinsic>
<Extrinsic name="QuantityOrdered"></Extrinsic>
</InvoiceDetailItem>
<InvoiceDetailItem invoiceLineNumber="8" quantity="3">
<UnitOfMeasure>pack</UnitOfMeasure>
<UnitPrice>
<Money currency="GBP">13.3700</Money>
</UnitPrice>
<InvoiceDetailItemReference lineNumber="8">
<ItemID>
<SupplierPartID>30850</SupplierPartID>
<SupplierPartAuxiliaryID></SupplierPartAuxiliaryID>
</ItemID>
<Description xml:lang="en-GB">NON CORE Champion Chicken </Description>
</InvoiceDetailItemReference>
<SubtotalAmount>
<Money currency="GBP">40.11</Money>
</SubtotalAmount>
<Tax>
<Money currency="GBP">0.00</Money>
<Description xml:lang="en-GB">Total Line Item Tax</Description>
<TaxDetail purpose="tax" category="vat" percentageRate="0.00">
<TaxableAmount>
<Money currency="GBP">40.11</Money>
</TaxableAmount>
<TaxAmount>
<Money currency="GBP">0.00</Money>
</TaxAmount>
<TaxLocation xml:lang="en-GB">GB</TaxLocation>
<Description xml:lang="en-GB">Z</Description>
</TaxDetail>
</Tax>
<GrossAmount>
<Money currency="GBP">40.11</Money>
</GrossAmount>
<NetAmount>
<Money currency="GBP">40.11</Money>
</NetAmount>
<Extrinsic name="TaxRefCode">Z</Extrinsic>
<Extrinsic name="LinePurchaseOrderNumber"></Extrinsic>
<Extrinsic name="QuantityOrdered"></Extrinsic>
</InvoiceDetailItem>
</InvoiceDetailOrder>
<InvoiceDetailSummary>
<SubtotalAmount>
<Money currency="GBP">266.70</Money>
</SubtotalAmount>
<Tax>
<Money currency="GBP">0.00</Money>
<Description xml:lang="en-GB">Total Tax</Description>
<TaxDetail purpose="tax" category="vat" percentageRate="0">
<TaxableAmount>
<Money currency="GBP">266.70</Money>
</TaxableAmount>
<TaxAmount>
<Money currency="GBP">0.00</Money>
</TaxAmount>
<TaxLocation xml:lang="en-GB">GB</TaxLocation>
<Description xml:lang="en-GB">Z</Description>
</TaxDetail>
</Tax>
<ShippingAmount>
<Money currency="GBP">0.00</Money>
</ShippingAmount>
<GrossAmount>
<Money currency="GBP">266.70</Money>
</GrossAmount>
<NetAmount>
<Money currency="GBP">266.70</Money>
</NetAmount>
<DueAmount>
<Money currency="GBP">266.70</Money>
</DueAmount>
</InvoiceDetailSummary>
</InvoiceDetailRequest>
</Request>
</cXML>`
答案 0 :(得分：0)
我已经删除了XML以演示XMLTABLE的使用
create table invoice_info(
batch_xml xmltype
);
insert into invoice_info values(
xmltype('<?xml version="1.0" encoding="utf-8"?>
<cXML xml:lang="en-GB" version="1.2.014" payloadID="elcom (inv 1).rdeint1b.2015.12.02.11.59.47.377.x.xlsx.xml" timestamp="2015-12-02T16:35:13-00:00">
<Request>
<InvoiceDetailRequest>
<InvoiceDetailOrder>
<InvoiceDetailItem invoiceLineNumber="1" quantity="12">
<UnitOfMeasure>pack</UnitOfMeasure>
<Extrinsic name="TaxRefCode">Z</Extrinsic>
<Extrinsic name="LinePurchaseOrderNumber"></Extrinsic>
<Extrinsic name="QuantityOrdered"></Extrinsic>
</InvoiceDetailItem>
<InvoiceDetailItem invoiceLineNumber="2" quantity="2">
<UnitOfMeasure>pack</UnitOfMeasure>
<Extrinsic name="TaxRefCode">Z</Extrinsic>
<Extrinsic name="LinePurchaseOrderNumber"></Extrinsic>
<Extrinsic name="QuantityOrdered"></Extrinsic>
</InvoiceDetailItem>
<InvoiceDetailItem invoiceLineNumber="3" quantity="33">
<UnitOfMeasure>pack</UnitOfMeasure>
<Extrinsic name="TaxRefCode">Z</Extrinsic>
<Extrinsic name="LinePurchaseOrderNumber"></Extrinsic>
<Extrinsic name="QuantityOrdered"></Extrinsic>
</InvoiceDetailItem>
</InvoiceDetailOrder>
</InvoiceDetailRequest>
</Request>
</cXML>')
);
commit;
select cols.*
from invoice_info
cross join xmltable('cXML/Request/InvoiceDetailRequest/InvoiceDetailOrder/InvoiceDetailItem' passing batch_xml /*if your column is xmltype, directly pass it. If not, convert it using xmltype(column_name)*/
columns invoicelinenumber number path '@invoiceLineNumber', /*use @ to specify the attribute you want*/
quantity number path '@quantity'
) cols;
INVOICELINENUMBER QUANTITY
----------------- ----------
1 12
2 2
3 33