解析oracle中的XML数据

我是Oracle XML领域的新手。我试图解析一个XML，但没有做到。解析oracle中的XML数据

以下是XML数据。

<CompositeDataObject Type="ApplicantsAAT" Version="0"> 
<DataObjectElement SystemName="AccountRelationship" ObjectType="DataObjectCollection"> 
<CollectionItem ID="604008" EncryptedID="4GnX1!b8epwsAmwbfvZjo;xAAAAAB6r2wy" DataObjectCategory="RepeatingAttribute" DataObjectType="AccountRelationshipAAT"/> 
<CollectionItem ID="604040" EncryptedID="4IrPkqeoo7EVLEuSm7egK96AAAAAB6r2zS" DataObjectCategory="RepeatingAttribute" DataObjectType="AccountRelationshipAAT"/> 
</DataObjectElement> 
<DataObjectElement SystemName="ApplicantCreditRefDetailsAATSL" ObjectType="DataObject" ID="603979" EncryptedID="4PPEFaEyt2Q!K48f13wy7gzAAAAAB6r2wR" DataObjectCategory="RepeatingAttribute" DataObjectType="ApplicantCreditRefDetailsAATSL"/><DataObjectElement SystemName="CreditCardsTPF" ObjectType="DataObjectCollection"/><CompositeDataObjectElement SystemName="CreditObligations" ObjectType="DataObjectCollection"/><DataObjectElement SystemName="CreditScoring" ObjectType="DataObject" ID="603970" EncryptedID="4CWx;PRGqbV1IMzP4DtnY2IAAAAAB6r2wY" DataObjectCategory="RepeatingAttribute" DataObjectType="CreditScoring"/><DataObjectElement SystemName="DependantDetails" ObjectType="DataObject" ID="603978" EncryptedID="4OReRldXZeF8IU9a2e3RZk9AAAAAB6r2wQ" DataObjectCategory="RepeatingAttribute" DataObjectType="ApplicantDependantDetailsAATSL"/><DataObjectElement SystemName="EmploymentAATSL" ObjectType="DataObject" ID="603972" EncryptedID="4GkF83Ll!xLiLqS1zL;FMG4AAAAAB6r2we" DataObjectCategory="RepeatingAttribute" DataObjectType="EmploymentAperioOnlyAATSL"/><DataObjectElement SystemName="ExpenditureDetailsTPF" ObjectType="DataObject" ID="603980" EncryptedID="4G6EGC6aL8LmN94xr9LNgRxAAAAAB6r2wW" DataObjectCategory="RepeatingAttribute" DataObjectType="ExpenditureTPF"/><DataObjectElement SystemName="Fields" ObjectType="DataObject" ID="9251" EncryptedID="4MEw5;;AiwprG2uKYJGudrLAAAAAB6pn95" DataObjectCategory="Party" DataObjectType="Personal"/><DataObjectElement SystemName="FinancialAssetsAATSL" ObjectType="DataObjectCollection"/><DataObjectElement SystemName="FinancialExpenseAATSL" ObjectType="DataObjectCollection"/><DataObjectElement SystemName="FinancialLiabilitiesAATSL" ObjectType="DataObjectCollection"/><DataObjectElement SystemName="FinancierDeductionAATSL" ObjectType="DataObjectCollection"/><DataObjectElement SystemName="IncomeSalariedAATSL" ObjectType="DataObject" ID="603973" EncryptedID="4J04bAAaMKqPIXbr7AAUfoQAAAAAB6r2wf" DataObjectCategory="RepeatingAttribute" DataObjectType="ApplicantFinancialIncomeSalariedFinalAATSL"/><DataObjectElement SystemName="IncomeSelfEmployedAATSL" ObjectType="DataObject" ID="603974" EncryptedID="4D;pvvFrYPDyLjkipR7sYyQAAAAAB6r2wc" DataObjectCategory="RepeatingAttribute" DataObjectType="ApplicantFinancialIncomeSelfEmplAATAP"/> 
<CompositeDataObjectElement SystemName="Tabs" ObjectType="DataObject" ID="378409" EncryptedID="4J!pTqS7x4XxIYZjRd2jA2UAAAAAB6o51z" CompositeDataObject="ApplicantsViewsAAT"/> 
</CompositeDataObject>

下面的查询工作正常，如果CollectionItem只存在一个内部DataObjectElement时间。如果collectionItem多出现一次，则失败。基本上我试图实现的是每当它看到一个TAG ID时将数据视为新行。

WITH t AS (SELECT XMLType('<CompositeDataObject Type="ApplicantsAAT" Version="0"> 
<DataObjectElement SystemName="AccountRelationship" ObjectType="DataObjectCollection"> 
<CollectionItem ID="604008" EncryptedID="4GnX1!b8epwsAmwbfvZjo;xAAAAAB6r2wy" DataObjectCategory="RepeatingAttribute" DataObjectType="AccountRelationshipAAT"/> 
<CollectionItem ID="604040" EncryptedID="4IrPkqeoo7EVLEuSm7egK96AAAAAB6r2zS" DataObjectCategory="RepeatingAttribute" DataObjectType="AccountRelationshipAAT"/> 
</DataObjectElement> 
<DataObjectElement SystemName="ApplicantCreditRefDetailsAATSL" ObjectType="DataObject" ID="603979" EncryptedID="4PPEFaEyt2Q!K48f13wy7gzAAAAAB6r2wR" DataObjectCategory="RepeatingAttribute" DataObjectType="ApplicantCreditRefDetailsAATSL"/><DataObjectElement SystemName="CreditCardsTPF" ObjectType="DataObjectCollection"/><CompositeDataObjectElement SystemName="CreditObligations" ObjectType="DataObjectCollection"/><DataObjectElement SystemName="CreditScoring" ObjectType="DataObject" ID="603970" EncryptedID="4CWx;PRGqbV1IMzP4DtnY2IAAAAAB6r2wY" DataObjectCategory="RepeatingAttribute" DataObjectType="CreditScoring"/><DataObjectElement SystemName="DependantDetails" ObjectType="DataObject" ID="603978" EncryptedID="4OReRldXZeF8IU9a2e3RZk9AAAAAB6r2wQ" DataObjectCategory="RepeatingAttribute" DataObjectType="ApplicantDependantDetailsAATSL"/><DataObjectElement SystemName="EmploymentAATSL" ObjectType="DataObject" ID="603972" EncryptedID="4GkF83Ll!xLiLqS1zL;FMG4AAAAAB6r2we" DataObjectCategory="RepeatingAttribute" DataObjectType="EmploymentAperioOnlyAATSL"/><DataObjectElement SystemName="ExpenditureDetailsTPF" ObjectType="DataObject" ID="603980" EncryptedID="4G6EGC6aL8LmN94xr9LNgRxAAAAAB6r2wW" DataObjectCategory="RepeatingAttribute" DataObjectType="ExpenditureTPF"/><DataObjectElement SystemName="Fields" ObjectType="DataObject" ID="9251" EncryptedID="4MEw5;;AiwprG2uKYJGudrLAAAAAB6pn95" DataObjectCategory="Party" DataObjectType="Personal"/><DataObjectElement SystemName="FinancialAssetsAATSL" ObjectType="DataObjectCollection"/><DataObjectElement SystemName="FinancialExpenseAATSL" ObjectType="DataObjectCollection"/><DataObjectElement SystemName="FinancialLiabilitiesAATSL" ObjectType="DataObjectCollection"/><DataObjectElement SystemName="FinancierDeductionAATSL" ObjectType="DataObjectCollection"/><DataObjectElement SystemName="IncomeSalariedAATSL" ObjectType="DataObject" ID="603973" EncryptedID="4J04bAAaMKqPIXbr7AAUfoQAAAAAB6r2wf" DataObjectCategory="RepeatingAttribute" DataObjectType="ApplicantFinancialIncomeSalariedFinalAATSL"/><DataObjectElement SystemName="IncomeSelfEmployedAATSL" ObjectType="DataObject" ID="603974" EncryptedID="4D;pvvFrYPDyLjkipR7sYyQAAAAAB6r2wc" DataObjectCategory="RepeatingAttribute" DataObjectType="ApplicantFinancialIncomeSelfEmplAATAP"/> 
<CompositeDataObjectElement SystemName="Tabs" ObjectType="DataObject" ID="378409" EncryptedID="4J!pTqS7x4XxIYZjRd2jA2UAAAAAB6o51z" CompositeDataObject="ApplicantsViewsAAT"/> 
</CompositeDataObject>') xmlcol 
       FROM dual) 
    SELECT extract(value(x),'//*[@ID]/@ID') linked_object_id, 
    extractValue(value(x),'//*[@ID]/ancestor-or-self::*[@EncryptedID]/@EncryptedID') linked_object_encrypted_id, 
    extractValue(value(x),'//*[@ID]/ancestor-or-self::*[@SystemName]/@SystemName') system_name, 
    extractValue(value(x),'//*[@ID]/ancestor-or-self::*[@DataObjectCategory]/@DataObjectCategory') data_object_category, 
    extractValue(value(x),'//*[@ID]/ancestor-or-self::*[@ObjectType]/@ObjectType') object_type, 
    extractValue(value(x),'//*[@ID]/ancestor-or-self::*[@DataObjectType]/@DataObjectType') data_object_type, 
    extractValue(value(x),'//*[@ID]/ancestor-or-self::*[@CompositeDataObject]/@CompositeDataObject') composite_data_object 
    FROM t, TABLE(XMLSequence(extract(t.xmlcol,'/CompositeDataObject/*'))) x;

===================================== 下面是我期待的简单例子

感谢您的宝贵答复。

您发布的查询工作正常。但正如你所看到的，有一些生成NULL的字段。例如。第一个DataObjectElement包含2个CollectionItem（604008,604008a），但在CollectionItem中没有“SystemName”，因此我期望从主DataObjectElement标记中得到 SystemName，即“AccountRelationship”。同去OBJECTTYPE

WITH t AS (SELECT XMLType('<CompositeDataObject Type="ApplicantsAAT" Version="0"> 
<DataObjectElement SystemName="AccountRelationship" ObjectType="DataObjectCollection"> 
<CollectionItem ID="604008" EncryptedID="4GnX1!b8epwsAmwbfvZjo;xAAAAAB6r2wy" DataObjectCategory="RepeatingAttribute" DataObjectType="AccountRelationshipAAT"/> 
<CollectionItem ID="604008a" EncryptedID="4GnX1!b8epwsAmwbfvZjo;xAAAAAB6r2wy" DataObjectCategory="RepeatingAttribute" DataObjectType="AccountRelationshipAAT"/> 
</DataObjectElement> 
<DataObjectElement SystemName="ApplicantCreditRefDetailsAATSL" ObjectType="DataObject" ID="603979" EncryptedID="4PPEFaEyt2Q!K48f13wy7gzAAAAAB6r2wR" DataObjectCategory="RepeatingAttribute" DataObjectType="ApplicantCreditRefDetailsAATSL"/> 
<CompositeDataObjectElement SystemName="Tabs" ObjectType="DataObject" ID="378409" EncryptedID="4J!pTqS7x4XxIYZjRd2jA2UAAAAAB6o51z" CompositeDataObject="ApplicantsViewsAAT"/> 
</CompositeDataObject>') xmlcol 
       FROM dual) 

       SELECT extractvalue(value(x), '/*/@ID') id, 
       extractvalue(value(x), '/*/@EncryptedID') EncryptedID, 
       extractvalue(value(x), '/*/@SystemName') SystemName, 
       extractvalue(value(x), '/*/@DataObjectCategory') DataObjectCategory, 
       extractvalue(value(x), '/*/@ObjectType') ObjectType, 
       extractvalue(value(x), '/*/@DataObjectType') DataObjectType, 
       extractvalue(value(x), '/*/@CompositeDataObject') CompositeDataObject 
     FROM t, TABLE(XMLSequence(extract(t.xmlcol,'//*[@ID]'))) x;

从上面的查询结果是

ID  ENCRYPTEDID       SYSTEMNAME      DATAOBJECTCATEGORY OBJECTTYPE    DATAOBJECTTYPE     COMPOSITEDATAOBJECT 
604008 4GnX1!b8epwsAmwbfvZjo;xAAAAAB6r2wy         RepeatingAttribute       AccountRelationshipAAT 
604008a 4GnX1!b8epwsAmwbfvZjo;xAAAAAB6r2wy         RepeatingAttribute       AccountRelationshipAAT 
603979 4PPEFaEyt2Q!K48f13wy7gzAAAAAB6r2wR ApplicantCreditRefDetailsAATSL RepeatingAttribute DataObject ApplicantCreditRefDetailsAATSL 
378409 4J!pTqS7x4XxIYZjRd2jA2UAAAAAB6o51z Tabs            DataObject                    ApplicantsViewsAAT

我期待只是细微的变化（如下结果中包含值SYSTEMNAME，而objecttype）

ID  ENCRYPTEDID       SYSTEMNAME      DATAOBJECTCATEGORY OBJECTTYPE    DATAOBJECTTYPE     COMPOSITEDATAOBJECT 
604008 4GnX1!b8epwsAmwbfvZjo;xAAAAAB6r2wy AccountRelationship    RepeatingAttribute DataObjectCollection AccountRelationshipAAT 
604008a 4GnX1!b8epwsAmwbfvZjo;xAAAAAB6r2wy AccountRelationship    RepeatingAttribute DataObjectCollection AccountRelationshipAAT 
603979 4PPEFaEyt2Q!K48f13wy7gzAAAAAB6r2wR ApplicantCreditRefDetailsAATSL RepeatingAttribute DataObject ApplicantCreditRefDetailsAATSL 
378409 4J!pTqS7x4XxIYZjRd2jA2UAAAAAB6o51z Tabs            DataObject                    ApplicantsViewsAAT

请将过去的内容复制到一些文本板中以获得更清晰的视图。你的帮助非常感谢

来源

2013-01-04 Arkesh

即时通讯不完全确定你在做什么，但是它是1行每“ID”？如果是这样的话。

10 select id, EncryptedID, 
11   nvl(SystemName, extractvalue(xmlcol, '//*[child::*/@ID="' || id || '"]/@SystemName')) SystemName, 
12   DataObjectCategory, 
13   nvl(ObjectType, extractvalue(xmlcol, '//*[child::*/@ID="' || id || '"]/@ObjectType')) ObjectType, 
14   DataObjectType, 
15   CompositeDataObject 
16 from (SELECT t.xmlcol, extractvalue(value(x), '/*/@ID') id, 
17     extractvalue(value(x), '/*/@EncryptedID') EncryptedID, 
18     extractvalue(value(x), '/*/@SystemName') SystemName, 
19     extractvalue(value(x), '/*/@DataObjectCategory') DataObjectCategory, 
20     extractvalue(value(x), '/*/@ObjectType') ObjectType, 
21     extractvalue(value(x), '/*/@DataObjectType') DataObjectType, 
22     extractvalue(value(x), '/*/@CompositeDataObject') CompositeDataObject 
23   FROM t, TABLE(XMLSequence(extract(t.xmlcol,'//*[@ID]'))) x) 
24 ; 

ID   ENCRYPTEDID   SYSTEMNAME   DATAOBJECTCATEGORY OBJECTTYPE   DATAOBJECTTYPE  COMPOSITEDATAOBJECT 
---------- -------------------- -------------------- -------------------- -------------------- -------------------- -------------------- 
604008  4GnX1!b8epwsAmwbfvZj AccountRelationship RepeatingAttribute DataObjectCollection AccountRelationshipA 
      o;xAAAAAB6r2wy                  AT 

604040  4IrPkqeoo7EVLEuSm7eg AccountRelationship RepeatingAttribute DataObjectCollection AccountRelationshipA 
      K96AAAAAB6r2zS                  AT 

603979  4PPEFaEyt2Q!K48f13wy ApplicantCreditRefDe RepeatingAttribute DataObject   ApplicantCreditRefDe 
      7gzAAAAAB6r2wR  tailsAATSL              tailsAATSL 

603970  4CWx;PRGqbV1IMzP4Dtn CreditScoring  RepeatingAttribute DataObject   CreditScoring 
      Y2IAAAAAB6r2wY 

603978  4OReRldXZeF8IU9a2e3R DependantDetails  RepeatingAttribute DataObject   ApplicantDependantDe 
      Zk9AAAAAB6r2wQ                  tailsAATSL 

603972  4GkF83Ll!xLiLqS1zL;F EmploymentAATSL  RepeatingAttribute DataObject   EmploymentAperioOnly 
      MG4AAAAAB6r2we                  AATSL 

603980  4G6EGC6aL8LmN94xr9LN ExpenditureDetailsTP RepeatingAttribute DataObject   ExpenditureTPF 
      gRxAAAAAB6r2wW  F 

9251  4MEw5;;AiwprG2uKYJGu Fields    Party    DataObject   Personal 
      drLAAAAAB6pn95 

603973  4J04bAAaMKqPIXbr7AAU IncomeSalariedAATSL RepeatingAttribute DataObject   ApplicantFinancialIn 
      foQAAAAAB6r2wf                  comeSalariedFinalAAT 
                           SL 

603974  4D;pvvFrYPDyLjkipR7s IncomeSelfEmployedAA RepeatingAttribute DataObject   ApplicantFinancialIn 
      YyQAAAAAB6r2wc  TSL               comeSelfEmplAATAP 

378409  4J!pTqS7x4XxIYZjRd2j Tabs          DataObject        ApplicantsViewsAAT 
      A2UAAAAAB6o51z

来源

2013-01-04 21:04:13 DazzaL

感谢您的宝贵答复。我期望在上述查询中获得SystemName和ObjectType的轻微更改。你发布的查询工作正常。但正如你所看到的，有些字段（SystemName和ObjectType）会生成NULL。例如。第一个DataObjectElement包含2个CollectionItem（604008,604008a），但在CollectionItem中没有“SystemName”，因此我期望从主DataObjectElement标记中得到 SystemName，即“AccountRelationship”。同样到ObjectType – Arkesh

@ user1949456编辑的答案是否符合您的用途？ – DazzaL

有人可以帮我在上面的查询请 – Arkesh

解析oracle中的XML数据

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