View on xmltype column
Hi,
I had an xmlschema that looked as follows:
<xs:schema xmlns:ora="http://xmlns.oracle.com/xdb" xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="unqualified" attributeFormDefault="unqualified">
<xs:include schemaLocation="http://helios:8081/home/CVB/xsd/Elements.xsd"/>
And I read the following xml in the database:
<ExemptionRequest xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.rsvz-inasti.fgov.be/schemas/B2B/Exchanges http://helios:8081/home/CVB/xsd/B303_Exemption.xsd">
<ExemptionRequestInfo>
<ExemptionRequestNbr>C061251532341</ExemptionRequestNbr>
<SIFCode>016</SIFCode>
This xml-file was read into an clob column and on this clob column I made a relational view as follows:
SELECT X.id_exemp_req id_exemp_req
, extractValue(value(t),'/ExemptionRequest/ExemptionRequestInfo/ExemptionRequestNbr') ExemptionRequestNbr_RInf
, extractValue(value(t),'/ExemptionRequest/ExemptionRequestInfo/SIFCode') SIFCode_RInf
, extractValue(value(t),'/ExemptionRequest/ExemptionRequestInfo/DateRegistration') DateRegistration_RInf
, extractValue(value(t),'/ExemptionRequest/ExemptionRequestInfo/DateRegistered') DateRegistered_RInf
, extractValue(value(t),'/ExemptionRequest/ExemptionRequestInfo/RelationCode') RelationCode_RInf
FROM XML_EXEMPTION_REQUESTS_ALL X,
TABLE (xmlsequence(extract(XMLTYPE.createXML(X.xmlval),'/ExemptionRequest'))) t
And this worked very well.
Now however, I have changed the schema as follows:
<xs:schema xmlns="http://www.rsvz-inasti.fgov.be/schemas/B2B/Exchanges" xmlns:ora="http://xmlns.oracle.com/xdb" xmlns:xs="http://www.w3.org/2001/XMLSchema" targetNamespace="http://www.rsvz-inasti.fgov.be/schemas/B2B/Exchanges" elementFormDefault="qualified" attributeFormDefault="unqualified">
<xs:include schemaLocation="http://helios:8081/home/CVB/xsd/Elements.xsd"/>
The xml then looks as follows:
<ExemptionRequest xmlns="http://www.rsvz-inasti.fgov.be/schemas/B2B/Exchanges" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.rsvz-inasti.fgov.be/schemas/B2B/Exchanges http://helios:8081/home/CVB/xsd/B303_Exemption.xsd">
But now my view doesn't work anymore. The relational columns are all empty.
But I only changed the header of the schema and not the structure/content of it.
I have another view which works directly on the XMLTYPE TABLE (and that has the same structure) and this still works fine:
SELECT extractValue(value(u),'/ExemptionRequestInfo/ExemptionRequestNbr') ExemptionRequestNbr_RInf
, extractValue(value(u),'/ExemptionRequestInfo/SIFCode') SIFCode_RInf
, extractValue(value(u),'/ExemptionRequestInfo/DateRegistration') DateRegistration_RInf
, extractValue(value(u),'/ExemptionRequestInfo/DateRegistered') DateRegistered_RInf
, extractValue(value(u),'/ExemptionRequestInfo/RelationCode') RelationCode_RInf
, extractValue(value(v),'/ExemptionSelfEmployed/INSS') INSS_SE
FROM XML_EXEMPTION_REQUESTS X,
TABLE (xmlsequence(extract(value(X),'/ExemptionRequest'))) t,
TABLE (xmlsequence(extract(value(t),'/ExemptionRequest/ExemptionRequestInfo'))) u,
TABLE (xmlsequence(extract(value(t),'/ExemptionRequest/ExemptionSelfEmployed'))) v,
TABLE (xmlsequence(extract(value(v),'/ExemptionSelfEmployed/LegalInfo'))) w
Does anybody know why this happens?
Thanks in advance,
Geert
You added a targetNamespace to the XML Schema, changing the namespace for the elements. You need to define a namespace prefix mapping in each operator that uses a path expression... eg
SELECT X.id_exemp_req id_exemp_req
, extractValue(value(t),'/ExemptionRequest/ExemptionRequestInfo/ExemptionRequestNbr','xmlns="http://www.rsvz-inasti.fgov.be/schemas/B2B/Exchanges") ExemptionRequestNbr_RInf
, extractValue(value(t),'/ExemptionRequest/ExemptionRequestInfo/SIFCode','xmlns="http://www.rsvz-inasti.fgov.be/schemas/B2B/Exchanges",'xmlns="http://www.rsvz-inasti.fgov.be/schemas/B2B/Exchanges") SIFCode_RInf
, extractValue(value(t),'/ExemptionRequest/ExemptionRequestInfo/DateRegistration','xmlns="http://www.rsvz-inasti.fgov.be/schemas/B2B/Exchanges") DateRegistration_RInf
, extractValue(value(t),'/ExemptionRequest/ExemptionRequestInfo/DateRegistered','xmlns="http://www.rsvz-inasti.fgov.be/schemas/B2B/Exchanges") DateRegistered_RInf
, extractValue(value(t),'/ExemptionRequest/ExemptionRequestInfo/RelationCode','xmlns="http://www.rsvz-inasti.fgov.be/schemas/B2B/Exchanges") RelationCode_RInf
FROM XML_EXEMPTION_REQUESTS_ALL X,
TABLE (xmlsequence(extract(XMLTYPE.createXML(X.xmlval),'/ExemptionRequest','xmlns="http://www.rsvz-inasti.fgov.be/schemas/B2B/Exchanges"))) tThe reason for this is that in the case of a schema based XMLType table or column, if there is no namespace:prefix mappings supplied we assume that the default namespace is the targetNamespace, avoiding the need to supply a namespace prefix mapping for the targetNamespace . This was probably a mistake, but it is quite useful.
In the case of a non schema based xmltype (which this is since it has been constructed from a CLOB we cannot make the assumption.
In general I would recommend that you change both views and provide an explicit namespace:prefix mapping to all the operators.
Which database release are you working with
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How can i change a xmltype column's xml schema?
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my problem is ,
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XMLType column based on XML Schema: several questions
Hi,
I've a table on an oracle db version 10.1.0.4 where I stage the xml files containing orders created on a third party's system using BizTalk.
Although the storage I opted for is based on an XML Schema, defined by this third-party, I am facing big perfomance issues with files bigger than a few hundreds of kBs.
For instance, a 32Mb file takes more than 2 hours to be processed.
Now, after reading other threads in this forum and the documentation, my understanding of the problem is that the whole issue is with the correct indexing of the nested tables.
Here is my current XML Schema definition:
<?xml version="1.0" encoding="UTF-8"?>
<xs:schema
xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:xdb="http://xmlns.oracle.com/xdb"
elementFormDefault="qualified"
attributeFormDefault="unqualified"
xdb:storeVarrayAsTable="true">
<xs:include schemaLocation="private/Types.xsd"/>
<xs:element name="PickData">
<xs:complexType xdb:maintainDOM="false">
<xs:sequence>
<xs:element name="ProdRun">
<xs:complexType xdb:maintainDOM="false">
<xs:sequence>
<xs:element name="Nr" type="xs:int"/>
<xs:element name="Date" type="string8"/>
<xs:element name="Final" type="xs:int"/>
<xs:element name="PickWave" maxOccurs="unbounded">
<xs:complexType xdb:maintainDOM="false">
<xs:sequence>
<xs:element name="Nr" type="string10"/>
<xs:element name="ProdLine" type="string2"/>
<xs:element name="TourSeq" type="xs:int"/>
<xs:element name="Tour" type="string20"/>
<xs:element name="Customer" maxOccurs="unbounded">
<xs:complexType xdb:maintainDOM="false">
<xs:sequence>
<xs:element name="Seq" type="string20"/>
<xs:element name="Cust" type="string10"/>
<xs:element name="Mod" type="string30"/>
<xs:element name="Tod" type="string30"/>
<xs:element name="InvOrder" maxOccurs="unbounded">
<xs:complexType xdb:maintainDOM="false">
<xs:sequence>
<xs:element name="Nr" type="string20"/>
<xs:element name="Item" type="string20"/>
<xs:element name="Qty" type="xs:int"/>
<xs:element name="Priority" type="xs:int"/>
<xs:element name="Reordering" type="xs:int"/>
<xs:element name="DelDate" type="string8"/>
<xs:element name="HlOrder" type="string20"/>
</xs:sequence>
</xs:complexType>
<xs:unique name="InvOrderKey">
<xs:selector xpath="InvOrder"/>
<xs:field xpath="Nr"/>
</xs:unique>
</xs:element>
</xs:sequence>
</xs:complexType>
<xs:unique name="CustomerKey">
<xs:selector xpath="Customer"/>
<xs:field xpath="Seq"/>
</xs:unique>
</xs:element>
</xs:sequence>
</xs:complexType>
<xs:unique name="PickWaveKey">
<xs:selector xpath="PickWave"/>
<xs:field xpath="Nr"/>
</xs:unique>
</xs:element>
</xs:sequence>
</xs:complexType>
<xs:unique name="ProdRunKey">
<xs:selector xpath="ProdRun"/>
<xs:field xpath="Nr"/>
</xs:unique>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:schema>
Here is the included sub-schema:
<?xml version="1.0" encoding="UTF-8"?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<xsd:simpleType name="string2">
<xsd:restriction base="xsd:string">
<xsd:maxLength value="2"/>
</xsd:restriction>
</xsd:simpleType>
<xsd:simpleType name="string5">
<xsd:restriction base="xsd:string">
<xsd:maxLength value="5"/>
</xsd:restriction>
</xsd:simpleType>
<xsd:simpleType name="string6">
<xsd:restriction base="xsd:string">
<xsd:maxLength value="6"/>
</xsd:restriction>
</xsd:simpleType>
<xsd:simpleType name="string8">
<xsd:restriction base="xsd:string">
<xsd:maxLength value="8"/>
</xsd:restriction>
</xsd:simpleType>
<xsd:simpleType name="string10">
<xsd:restriction base="xsd:string">
<xsd:maxLength value="10"/>
</xsd:restriction>
</xsd:simpleType>
<xsd:simpleType name="string15">
<xsd:restriction base="xsd:string">
<xsd:maxLength value="15"/>
</xsd:restriction>
</xsd:simpleType>
<xsd:simpleType name="string20">
<xsd:restriction base="xsd:string">
<xsd:maxLength value="20"/>
</xsd:restriction>
</xsd:simpleType>
<xsd:simpleType name="string30">
<xsd:restriction base="xsd:string">
<xsd:maxLength value="30"/>
</xsd:restriction>
</xsd:simpleType>
<xsd:simpleType name="string40">
<xsd:restriction base="xsd:string">
<xsd:maxLength value="40"/>
</xsd:restriction>
</xsd:simpleType>
<xsd:simpleType name="string50">
<xsd:restriction base="xsd:string">
<xsd:maxLength value="50"/>
</xsd:restriction>
</xsd:simpleType>
<xsd:simpleType name="string250">
<xsd:restriction base="xsd:string">
<xsd:maxLength value="250"/>
</xsd:restriction>
</xsd:simpleType>
</xsd:schema>
The statement for creating my table is
CREATE TABLE "XML_ORDERS"
("ID" NUMBER(7,0) NOT NULL ENABLE,
"XMLFILE" "SYS"."XMLTYPE" ,
"INSERTED" DATE DEFAULT sysdate,
CONSTRAINT "XML_ORDERS_PK" PRIMARY KEY ("ID") USING INDEX ENABLE
) XMLTYPE COLUMN XMLFILE STORE AS OBJECT RELATIONAL
XMLSCHEMA "private/PickData.xsd" ELEMENT "PickData"
Here is a simple instance document:
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<PickData xsi:noNamespaceSchemaLocation="private/PickData.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<ProdRun>
<Nr>5</Nr>
<Date>15112005</Date>
<Final>1</Final>
<PickWave>
<Nr>IPW0000017</Nr>
<ProdLine>01</ProdLine>
<TourSeq>1</TourSeq>
<Tour>00000043_078</Tour>
<Customer>
<Seq>5</Seq>
<Cust>100000006</Cust>
<Mod>FO</Mod>
<Tod>DDU</Tod>
<InvOrder>
<Nr>IIO0000457</Nr>
<Item>100000036</Item>
<Qty>20</Qty>
<Priority>1</Priority>
<Reordering>0</Reordering>
<DelDate>15112005</DelDate>
<HlOrder>CSO000742</HlOrder>
</InvOrder>
<InvOrder>
<Nr>IIO0000459</Nr>
<Item>100000045</Item>
<Qty>20</Qty>
<Priority>1</Priority>
<Reordering>0</Reordering>
<DelDate>15112005</DelDate>
<HlOrder>CSO000742</HlOrder>
</InvOrder>
</Customer>
<Customer>
<Seq>6</Seq>
<Cust>100000013</Cust>
<Mod>FO</Mod>
<Tod>DDU</Tod>
<InvOrder>
<Nr>IIO0000461</Nr>
<Item>100000036</Item>
<Qty>20</Qty>
<Priority>1</Priority>
<Reordering>0</Reordering>
<DelDate>15112005</DelDate>
<HlOrder>CSO000743</HlOrder>
</InvOrder>
<InvOrder>
<Nr>IIO0000463</Nr>
<Item>100000045</Item>
<Qty>20</Qty>
<Priority>1</Priority>
<Reordering>0</Reordering>
<DelDate>15112005</DelDate>
<HlOrder>CSO000743</HlOrder>
</InvOrder>
</Customer>
<Customer>
<Seq>2</Seq>
<Cust>100000114</Cust>
<Mod>FO</Mod>
<Tod>DDU</Tod>
<InvOrder>
<Nr>IIO0000465</Nr>
<Item>100000036</Item>
<Qty>20</Qty>
<Priority>1</Priority>
<Reordering>0</Reordering>
<DelDate>15112005</DelDate>
<HlOrder>CSO000744</HlOrder>
</InvOrder>
<InvOrder>
<Nr>IIO0000467</Nr>
<Item>100000045</Item>
<Qty>20</Qty>
<Priority>1</Priority>
<Reordering>0</Reordering>
<DelDate>15112005</DelDate>
<HlOrder>CSO000744</HlOrder>
</InvOrder>
</Customer>
<Customer>
<Seq>3</Seq>
<Cust>100000140</Cust>
<Mod>FO</Mod>
<Tod>DDU</Tod>
<InvOrder>
<Nr>IIO0000469</Nr>
<Item>100000036</Item>
<Qty>20</Qty>
<Priority>1</Priority>
<Reordering>0</Reordering>
<DelDate>15112005</DelDate>
<HlOrder>CSO000745</HlOrder>
</InvOrder>
<InvOrder>
<Nr>IIO0000471</Nr>
<Item>100000045</Item>
<Qty>20</Qty>
<Priority>1</Priority>
<Reordering>0</Reordering>
<DelDate>15112005</DelDate>
<HlOrder>CSO000745</HlOrder>
</InvOrder>
</Customer>
<Customer>
<Seq>7</Seq>
<Cust>100000143</Cust>
<Mod>FO</Mod>
<Tod>DDU</Tod>
<InvOrder>
<Nr>IIO0000473</Nr>
<Item>100000036</Item>
<Qty>20</Qty>
<Priority>1</Priority>
<Reordering>0</Reordering>
<DelDate>15112005</DelDate>
<HlOrder>CSO000746</HlOrder>
</InvOrder>
<InvOrder>
<Nr>IIO0000475</Nr>
<Item>100000045</Item>
<Qty>20</Qty>
<Priority>1</Priority>
<Reordering>0</Reordering>
<DelDate>15112005</DelDate>
<HlOrder>CSO000746</HlOrder>
</InvOrder>
</Customer>
<Customer>
<Seq>8</Seq>
<Cust>100000145</Cust>
<Mod>FO</Mod>
<Tod>DDU</Tod>
<InvOrder>
<Nr>IIO0000477</Nr>
<Item>100000036</Item>
<Qty>20</Qty>
<Priority>1</Priority>
<Reordering>0</Reordering>
<DelDate>15112005</DelDate>
<HlOrder>CSO000747</HlOrder>
</InvOrder>
<InvOrder>
<Nr>IIO0000479</Nr>
<Item>100000045</Item>
<Qty>20</Qty>
<Priority>1</Priority>
<Reordering>0</Reordering>
<DelDate>15112005</DelDate>
<HlOrder>CSO000747</HlOrder>
</InvOrder>
</Customer>
<Customer>
<Seq>9</Seq>
<Cust>100000146</Cust>
<Mod>FO</Mod>
<Tod>DDU</Tod>
<InvOrder>
<Nr>IIO0000481</Nr>
<Item>100000036</Item>
<Qty>20</Qty>
<Priority>0</Priority>
<Reordering>0</Reordering>
<DelDate>15112005</DelDate>
<HlOrder>CSO000748</HlOrder>
</InvOrder>
<InvOrder>
<Nr>IIO0000483</Nr>
<Item>100000045</Item>
<Qty>20</Qty>
<Priority>1</Priority>
<Reordering>0</Reordering>
<DelDate>15112005</DelDate>
<HlOrder>CSO000748</HlOrder>
</InvOrder>
</Customer>
<Customer>
<Seq>4</Seq>
<Cust>100000147</Cust>
<Mod>FO</Mod>
<Tod>DDU</Tod>
<InvOrder>
<Nr>IIO0000485</Nr>
<Item>100000036</Item>
<Qty>20</Qty>
<Priority>0</Priority>
<Reordering>0</Reordering>
<DelDate>15112005</DelDate>
<HlOrder>CSO000750</HlOrder>
</InvOrder>
<InvOrder>
<Nr>IIO0000487</Nr>
<Item>100000045</Item>
<Qty>20</Qty>
<Priority>1</Priority>
<Reordering>0</Reordering>
<DelDate>15112005</DelDate>
<HlOrder>CSO000750</HlOrder>
</InvOrder>
</Customer>
<Customer>
<Seq>10</Seq>
<Cust>100000148</Cust>
<Mod>FO</Mod>
<Tod>DDU</Tod>
<InvOrder>
<Nr>IIO0000489</Nr>
<Item>100000036</Item>
<Qty>20</Qty>
<Priority>0</Priority>
<Reordering>0</Reordering>
<DelDate>15112005</DelDate>
<HlOrder>CSO000751</HlOrder>
</InvOrder>
<InvOrder>
<Nr>IIO0000491</Nr>
<Item>100000045</Item>
<Qty>20</Qty>
<Priority>1</Priority>
<Reordering>0</Reordering>
<DelDate>15112005</DelDate>
<HlOrder>CSO000751</HlOrder>
</InvOrder>
</Customer>
</PickWave>
</ProdRun>
</PickData>
When I registered the XMLSchema, the following types and tables were automatically created and you can see the hierarchy below:
(by the way, I could not find any xdb_utilities.printNestedTables mentioned elsewhere)
XML_ORDERS
|_PickData381_T
|___ProdRun382_T
|_____PickWave388_COLL
|_______PickWave383_T
|_________Customer387_COLL
|___________Customer384_T
|_____________InvOrder386_COLL
These objects are then used in the following nested tables:
TABLE_NAME TABLE_TYPE_NAME PARENT_TABLE_NAME PARENT_TABLE_COLUMN
SYS_NTaK/5zar5S0WitSsgu6OKPQ== PickWave388_COLL PickData389_TAB "XMLDATA"."ProdRun"."PickWave"
SYS_NTf6QvwVm8SFKz+K/YYWq+WQ== Item408_COLL ProdData409_TAB "XMLDATA"."Item"
SYS_NTtu05ilrRQqmuEN4k+07VDA== Customer402_COLL OutboundParty403_TAB "XMLDATA"."Customer"
SYS_NTK6fhWq5uTJ+vKcgBpNm1Fg== InvOrder386_COLL SYS_NTIIzv7bkXQSSS43igtfi5eg== InvOrder
SYS_NTIIzv7bkXQSSS43igtfi5eg== Customer387_COLL SYS_NTaK/5zar5S0WitSsgu6OKPQ== Customer
I enabled sql tracing and I got the following TKPROF output
INSERT INTO IMP_ORDERS (PICK_INVORDERNR, PICK_ITEM, PICK_QTY, PICK_PRIORITY,
PICK_REORDERING, PICK_HLORDER, PICK_DELDATE, PICK_CUST, PICK_MOD, PICK_TOD,
PICK_SEQ, PICK_PICKWAVENR, PICK_PICKWAVEPRODLINE, PICK_PICKWAVETOUR,
PICK_PICKWAVETOURSEQ, PICK_ORDKEY, PICK_RUNKEY) SELECT INVORDERNR, ITEM,
QTY, PRIORITY, REORDERING, HLORDER, DELDATE, CUST, MOD, TOD, SEQ,
PICKWAVENR, PICKWAVEPRODLINE, PICKWAVETOUR, PICKWAVETOURSEQ, ROWNUM AS
PICK_ORDKEY, PRODRUNID FROM (SELECT /*+ cardinality(g 15)*/
EXTRACTVALUE(VALUE(G), '/InvOrder/Nr') AS INVORDERNR, EXTRACTVALUE(VALUE(G),
'/InvOrder/Item') AS ITEM, EXTRACTVALUE(VALUE(G), '/InvOrder/Qty') AS QTY,
EXTRACTVALUE(VALUE(G), '/InvOrder/Priority') AS PRIORITY,
EXTRACTVALUE(VALUE(G), '/InvOrder/Reordering') AS REORDERING,
EXTRACTVALUE(VALUE(G), '/InvOrder/HlOrder') AS HLORDER,
TO_DATE(EXTRACTVALUE(VALUE(G), '/InvOrder/DelDate'),'DDMMYYYY') AS DELDATE,
F.CUST, F.MOD, F.TOD, F.SEQ, F.PICKWAVENR, F.PICKWAVEPRODLINE,
F.PICKWAVETOUR, F.PICKWAVETOURSEQ, F.PRODRUNNR, F.PRODRUNDATE,
F.PRODRUNFINAL, F.PRODRUNID FROM (SELECT /*+ cardinality(e 60)*/VALUE(E) AS
CUSTOMERNODE, EXTRACTVALUE(VALUE(E), '/Customer/Cust') AS CUST,
EXTRACTVALUE(VALUE(E), '/Customer/Mod') AS MOD, EXTRACTVALUE(VALUE(E),
'/Customer/Tod') AS TOD, TO_NUMBER(EXTRACTVALUE(VALUE(E), '/Customer/Seq'))
AS SEQ, D.PICKWAVENR, D.PICKWAVEPRODLINE, D.PICKWAVETOUR, D.PICKWAVETOURSEQ,
D.PRODRUNNR, D.PRODRUNDATE, D.PRODRUNFINAL, D.PRODRUNID FROM (SELECT /*+
cardinality(c 100)*/VALUE(C) AS PICKWAVENODE, EXTRACTVALUE(VALUE(C),
'/PickWave/Nr') AS PICKWAVENR, TO_NUMBER(EXTRACTVALUE(VALUE(C),
'/PickWave/ProdLine')) AS PICKWAVEPRODLINE, EXTRACTVALUE(VALUE(C),
'/PickWave/Tour') AS PICKWAVETOUR, TO_NUMBER(EXTRACTVALUE(VALUE(C),
'/PickWave/TourSeq')) AS PICKWAVETOURSEQ, A.PRODRUNNR, A.PRODRUNDATE,
A.PRODRUNFINAL, A.PRODRUNID FROM (SELECT /*+ cardinality(b 1)*/VALUE(B) AS
PRODRUNNODE, EXTRACTVALUE(VALUE(B), '/ProdRun/Nr') AS PRODRUNNR,
TO_DATE(EXTRACTVALUE(VALUE(B), '/ProdRun/Date'),'DDMMYYYY') AS PRODRUNDATE,
EXTRACTVALUE(VALUE(B), '/ProdRun/Final') AS PRODRUNFINAL, X.ID PRODRUNID
FROM XML_ORDERS X, TABLE(XMLSEQUENCE(EXTRACT(X.XMLFILE,'/PickData/ProdRun'))
) B WHERE X.ID = :B1 ) A, TABLE(XMLSEQUENCE(EXTRACT(A.PRODRUNNODE,
'/ProdRun/PickWave'))) C ) D, TABLE(XMLSEQUENCE(EXTRACT(D.PICKWAVENODE,
'/PickWave/Customer'))) E ) F, TABLE(XMLSEQUENCE(EXTRACT(F.CUSTOMERNODE,
'/Customer/InvOrder'))) G ORDER BY PICKWAVEPRODLINE, PICKWAVETOURSEQ,
PICKWAVENR, SEQ )
call count cpu elapsed disk query current rows
Parse 1 0.00 0.00 0 0 0 0
Execute 1 4324.09 9994.65 0 57193 0 0
Fetch 0 0.00 0.00 0 0 0 0
total 2 4324.09 9994.65 0 57193 0 0
Misses in library cache during parse: 1
Misses in library cache during execute: 1
Optimizer mode: ALL_ROWS
Parsing user id: 68 (recursive depth: 1)
Rows Row Source Operation
0 COUNT (cr=0 pr=0 pw=0 time=180 us)
0 VIEW (cr=0 pr=0 pw=0 time=166 us)
0 SORT ORDER BY (cr=0 pr=0 pw=0 time=152 us)
40866 NESTED LOOPS (cr=54973 pr=0 pw=0 time=31065606 us)
1363 NESTED LOOPS (cr=54937 pr=0 pw=0 time=11037183 us)
1 NESTED LOOPS (cr=54889 pr=0 pw=0 time=10145883 us)
1 NESTED LOOPS (cr=54841 pr=0 pw=0 time=9799012 us)
1 TABLE ACCESS BY INDEX ROWID XML_ORDERS (cr=2 pr=0 pw=0 time=222 us)
1 INDEX UNIQUE SCAN XML_ORDERS_PK (cr=1 pr=0 pw=0 time=126 us)(object id 58551)
1 COLLECTION ITERATOR PICKLER FETCH (cr=54839 pr=0 pw=0 time=9798748 us)
1 COLLECTION ITERATOR PICKLER FETCH (cr=48 pr=0 pw=0 time=346818 us)
1363 COLLECTION ITERATOR PICKLER FETCH (cr=48 pr=0 pw=0 time=870830 us)
40866 COLLECTION ITERATOR PICKLER FETCH (cr=36 pr=0 pw=0 time=18739302 us)
Note that I cancelled this operation before it was over so I imagine that these figures refer to the statistics as of the time when the operation was interrupted.
So, here are finally my questions.
In order to create the constraints on the nested tables as shown in other threads, do I need to drop the existing xml_orders table and ancillary object types and recreate them or is there a way to add such constraints using the existing system generated object names?
Secondly, the xml_orders table may contain severale documents, not just one and his current primary key is the column ID. So, in order to uniquely identify the deepest element in the xml document, I need first to select the relevant document by means of the id column.
Would it be better to create the indexes containing this id column together with the nested_table_id and array_index?
Thanks for you help.
Flavio
PS: I wrote a 10 lines xsl transformation that I passed on to Saxon together with the 32Mb file. It took less than 1 minute to produce a flat file that was loaded almost instantly by SQL*Loader. So, what I am looking for is a procedure loading this stuff in less than 2 minutes or possibly less.Does the following help
SQL*Plus: Release 10.2.0.1.0 - Production on Tue Dec 27 21:44:53 2005
Copyright (c) 1982, 2005, Oracle. All rights reserved.
SQL> spool registerSchema_&4..log
SQL> set trimspool on
SQL> connect &1/&2
Connected.
SQL> --
SQL> declare
2 result boolean;
3 begin
4 result := dbms_xdb.createResource('/home/&1/xsd/&4',
5 bfilename(USER,'&4'),nls_charset_id('AL32UTF8'));
6 end;
7 /
old 4: result := dbms_xdb.createResource('/home/&1/xsd/&4',
new 4: result := dbms_xdb.createResource('/home/OTNTEST/xsd/GetaxTypes.xsd',
old 5: bfilename(USER,'&4'),nls_charset_id('AL32UTF8'));
new 5: bfilename(USER,'GetaxTypes.xsd'),nls_charset_id('AL32UTF8'));
PL/SQL procedure successfully completed.
SQL> commit
2 /
Commit complete.
SQL> alter session set events='31098 trace name context forever'
2 /
Session altered.
SQL> begin
2 dbms_xmlschema.registerSchema
3 (
4 schemaURL => '&3',
5 schemaDoc => xdbURIType('/home/&1/xsd/&4').getClob(),
6 local => TRUE,
7 genTypes => TRUE,
8 genBean => FALSE,
9 genTables => &5
10 );
11 end;
12 /
old 4: schemaURL => '&3',
new 4: schemaURL => 'private/GetaxTypes.xsd',
old 5: schemaDoc => xdbURIType('/home/&1/xsd/&4').getClob(),
new 5: schemaDoc => xdbURIType('/home/OTNTEST/xsd/GetaxTypes.xsd').getClob(),
old 9: genTables => &5
new 9: genTables => TRUE
PL/SQL procedure successfully completed.
SQL> quit
Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning, OLAP and Data Mining options
SQL*Plus: Release 10.2.0.1.0 - Production on Tue Dec 27 21:44:55 2005
Copyright (c) 1982, 2005, Oracle. All rights reserved.
SQL> spool registerSchema_&4..log
SQL> set trimspool on
SQL> connect &1/&2
Connected.
SQL> --
SQL> declare
2 result boolean;
3 begin
4 result := dbms_xdb.createResource('/home/&1/xsd/&4',
5 bfilename(USER,'&4'),nls_charset_id('AL32UTF8'));
6 end;
7 /
old 4: result := dbms_xdb.createResource('/home/&1/xsd/&4',
new 4: result := dbms_xdb.createResource('/home/OTNTEST/xsd/PickData.xsd',
old 5: bfilename(USER,'&4'),nls_charset_id('AL32UTF8'));
new 5: bfilename(USER,'PickData.xsd'),nls_charset_id('AL32UTF8'));
PL/SQL procedure successfully completed.
SQL> commit
2 /
Commit complete.
SQL> alter session set events='31098 trace name context forever'
2 /
Session altered.
SQL> begin
2 dbms_xmlschema.registerSchema
3 (
4 schemaURL => '&3',
5 schemaDoc => xdbURIType('/home/&1/xsd/&4').getClob(),
6 local => TRUE,
7 genTypes => TRUE,
8 genBean => FALSE,
9 genTables => &5
10 );
11 end;
12 /
old 4: schemaURL => '&3',
new 4: schemaURL => 'private/PickData.xsd',
old 5: schemaDoc => xdbURIType('/home/&1/xsd/&4').getClob(),
new 5: schemaDoc => xdbURIType('/home/OTNTEST/xsd/PickData.xsd').getClob(),
old 9: genTables => &5
new 9: genTables => TRUE
PL/SQL procedure successfully completed.
SQL> quit
Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning, OLAP and Data Mining options
SQL*Plus: Release 10.2.0.1.0 - Production on Tue Dec 27 21:44:58 2005
Copyright (c) 1982, 2005, Oracle. All rights reserved.
SQL> spool createTable.log
SQL> --
SQL> connect &1/&2
Connected.
SQL> --
SQL> CREATE TABLE "XML_ORDERS"
2 ("ID" NUMBER(7,0) NOT NULL ENABLE,
3 "XMLFILE" "SYS"."XMLTYPE" ,
4 "INSERTED" DATE DEFAULT sysdate,
5 CONSTRAINT "XML_ORDERS_PK" PRIMARY KEY ("ID") USING INDEX ENABLE
6 ) XMLTYPE COLUMN XMLFILE STORE AS OBJECT RELATIONAL
7 XMLSCHEMA "private/PickData.xsd"
8 ELEMENT "PickData"
9 VARRAY XMLFILE."XMLDATA"."ProdRun"."PickWave" STORE AS TABLE PickWave_TAB
10 (
11 ( primary key (nested_table_id, array_index)
12 ) organization index overflow
13 VARRAY "Customer" STORE AS TABLE Customer_TAB
14 (
15 (primary key (nested_table_id, array_index)
16 ) organization index overflow
17 VARRAY "InvOrder" STORE AS TABLE InvOrder_TAB
18 (
19 (primary key (nested_table_id, array_index)
20 ) organization index overflow
21 )
22 )
23 )
24 /
Table created.
SQL> quit
Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning, OLAP and Data Mining options
SQL*Plus: Release 10.2.0.1.0 - Production on Tue Dec 27 21:44:59 2005
Copyright (c) 1982, 2005, Oracle. All rights reserved.
SQL> spool insertFile_&3..log
SQL> set trimspool on
SQL> connect &1/&2
Connected.
SQL> --
SQL> set timing on
SQL> set long 10000
SQL> --
SQL> insert into XML_ORDERS (ID, XMLFILE) values (&4, xmltype(bfilename(USER,'&3'),nls_charset_id('AL32UTF8')))
2 /
old 1: insert into XML_ORDERS (ID, XMLFILE) values (&4, xmltype(bfilename(USER,'&3'),nls_charset_id('AL32UTF8')))
new 1: insert into XML_ORDERS (ID, XMLFILE) values (10, xmltype(bfilename(USER,'testcase.xml'),nls_charset_id('AL32UT
8')))
1 row created.
Elapsed: 00:00:00.11
SQL> commit
2 /
Commit complete.
Elapsed: 00:00:00.01
SQL> quit
Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning, OLAP and Data Mining options
SQL*Plus: Release 10.2.0.1.0 - Production on Tue Dec 27 21:44:59 2005
Copyright (c) 1982, 2005, Oracle. All rights reserved.
SQL> spool testcase.log
SQL> set trimspool on
SQL> connect &1/&2
Connected.
SQL> --
SQL> set timing on
SQL> set long 10000
SQL> set pages 0 lines 140
SQL> --
SQL> -- Testcase code here
SQL> --
SQL> set autotrace on explain
SQL> --
SQL> create or replace view PROD_RUN_VIEW
2 (
3 PRODRUNNODE,
4 PRODRUNNR,
5 PRODRUNDATE,
6 PRODRUNID,
7 PRODRUNFINAL
8 )
9 as
10 select EXTRACT(XMLFILE,'/PickData/ProdRun'),
11 EXTRACTVALUE(XMLFILE , '/PickData/ProdRun/Nr'),
12 TO_DATE(EXTRACTVALUE(XMLFILE, '/PickData/ProdRun/Date'),'DDMMYYYY'),
13 ID,
14 EXTRACTVALUE(XMLFILE,'/PickData/ProdRun/Final')
15 from XML_ORDERS
16 /
View created.
Elapsed: 00:00:00.09
SQL> create or replace view PICK_WAVE_VIEW
2 (
3 PICKWAVENODE,
4 PICKWAVENR,
5 PICKWAVEPRODLINE,
6 PICKWAVETOUR,
7 PICKWAVETOURSEQ,
8 PRODRUNNR,
9 PRODRUNDATE,
10 PRODRUNID,
11 PRODRUNFINAL
12 )
13 as
14 select value(PW),
15 extractValue(value(PW),'/PickWave/Nr'),
16 TO_NUMBER(EXTRACTVALUE(value(PW),'/PickWave/ProdLine')),
17 extractValue(value(PW),'/PickWave/Tour'),
18 TO_NUMBER(extractValue(value(PW),'/PickWave/TourSeq')),
19 PRODRUNNR,
20 PRODRUNDATE,
21 PRODRUNID,
22 PRODRUNFINAL
23 FROM PROD_RUN_VIEW, table(xmlsequence(extract(PRODRUNNODE,'/ProdRun/PickWave'))) PW
24 /
View created.
Elapsed: 00:00:00.09
SQL> create or replace view CUSTOMER_VIEW
2 (
3 CUSTOMERNODE,
4 CUST,
5 MOD,
6 TOD,
7 SEQ,
8 PICKWAVENR,
9 PICKWAVEPRODLINE,
10 PICKWAVETOUR,
11 PICKWAVETOURSEQ,
12 PRODRUNNR,
13 PRODRUNDATE,
14 PRODRUNFINAL,
15 PRODRUNID
16 )
17 as
18 select value(CUST),
19 EXTRACTVALUE(VALUE(CUST), '/Customer/Cust'),
20 EXTRACTVALUE(VALUE(CUST), '/Customer/Mod'),
21 EXTRACTVALUE(VALUE(CUST), '/Customer/Tod'),
22 TO_NUMBER(EXTRACTVALUE(VALUE(CUST), '/Customer/Seq')),
23 PICKWAVENR,
24 PICKWAVEPRODLINE,
25 PICKWAVETOUR,
26 PICKWAVETOURSEQ,
27 PRODRUNNR,
28 PRODRUNDATE,
29 PRODRUNFINAL,
30 PRODRUNID
31 from PICK_WAVE_VIEW, table(xmlsequence(extract(PICKWAVENODE,'/PickWave/Customer'))) CUST
32 /
View created.
Elapsed: 00:00:00.10
SQL>
SQL> create or replace view INVOICE_ORDER_VIEW
2 (
3 INVORDERNR,
4 ITEM,
5 QTY,
6 PRIORITY,
7 REORDERING,
8 HLORDER,
9 DELDATE,
10 CUST,
11 MOD,
12 TOD,
13 SEQ,
14 PICKWAVENR,
15 PICKWAVEPRODLINE,
16 PICKWAVETOUR,
17 PICKWAVETOURSEQ,
18 PRODRUNNR,
19 PRODRUNDATE,
20 PRODRUNFINAL,
21 PRODRUNID
22 )
23 as
24 SELECT EXTRACTVALUE(VALUE(INV), '/InvOrder/Nr'),
25 EXTRACTVALUE(VALUE(INV), '/InvOrder/Item'),
26 EXTRACTVALUE(VALUE(INV), '/InvOrder/Qty'),
27 EXTRACTVALUE(VALUE(INV), '/InvOrder/Priority'),
28 EXTRACTVALUE(VALUE(INV), '/InvOrder/Reordering'),
29 EXTRACTVALUE(VALUE(INV), '/InvOrder/HlOrder'),
30 TO_DATE(EXTRACTVALUE(VALUE(INV), '/InvOrder/DelDate'),'DDMMYYYY'),
31 CUST,
32 MOD,
33 TOD,
34 SEQ,
35 PICKWAVENR,
36 PICKWAVEPRODLINE,
37 PICKWAVETOUR,
38 PICKWAVETOURSEQ,
39 PRODRUNNR,
40 PRODRUNDATE,
41 PRODRUNFINAL,
42 PRODRUNID
43 FROM CUSTOMER_VIEW, table(xmlsequence(extract(CUSTOMERNODE,'Customer/InvOrder'))) INV
44 /
View created.
Elapsed: 00:00:00.13
SQL> select * from INVOICE_ORDER_VIEW
2 /
IIO0000461 100000036 20 1 0 CSO000743 15-NOV-05 100000013
FO DDU 6 IPW0000017 1 00000043_078
1
5 15-NOV-05 1 10
IIO0000463 100000045 20 1 0 CSO000743 15-NOV-05 100000013
FO DDU 6 IPW0000017 1 00000043_078
1
5 15-NOV-05 1 10
IIO0000473 100000036 20 1 0 CSO000746 15-NOV-05 100000143
FO DDU 7 IPW0000017 1 00000043_078
1
5 15-NOV-05 1 10
IIO0000475 100000045 20 1 0 CSO000746 15-NOV-05 100000143
FO DDU 7 IPW0000017 1 00000043_078
1
5 15-NOV-05 1 10
IIO0000469 100000036 20 1 0 CSO000745 15-NOV-05 100000140
FO DDU 3 IPW0000017 1 00000043_078
1
5 15-NOV-05 1 10
IIO0000471 100000045 20 1 0 CSO000745 15-NOV-05 100000140
FO DDU 3 IPW0000017 1 00000043_078
1
5 15-NOV-05 1 10
IIO0000489 100000036 20 0 0 CSO000751 15-NOV-05 100000148
FO DDU 10 IPW0000017 1 00000043_078
1
5 15-NOV-05 1 10
IIO0000491 100000045 20 1 0 CSO000751 15-NOV-05 100000148
FO DDU 10 IPW0000017 1 00000043_078
1
5 15-NOV-05 1 10
IIO0000481 100000036 20 0 0 CSO000748 15-NOV-05 100000146
FO DDU 9 IPW0000017 1 00000043_078
1
5 15-NOV-05 1 10
IIO0000483 100000045 20 1 0 CSO000748 15-NOV-05 100000146
FO DDU 9 IPW0000017 1 00000043_078
1
5 15-NOV-05 1 10
IIO0000485 100000036 20 0 0 CSO000750 15-NOV-05 100000147
FO DDU 4 IPW0000017 1 00000043_078
1
5 15-NOV-05 1 10
IIO0000487 100000045 20 1 0 CSO000750 15-NOV-05 100000147
FO DDU 4 IPW0000017 1 00000043_078
1
5 15-NOV-05 1 10
IIO0000457 100000036 20 1 0 CSO000742 15-NOV-05 100000006
FO DDU 5 IPW0000017 1 00000043_078
1
5 15-NOV-05 1 10
IIO0000459 100000045 20 1 0 CSO000742 15-NOV-05 100000006
FO DDU 5 IPW0000017 1 00000043_078
1
5 15-NOV-05 1 10
IIO0000477 100000036 20 1 0 CSO000747 15-NOV-05 100000145
FO DDU 8 IPW0000017 1 00000043_078
1
5 15-NOV-05 1 10
IIO0000479 100000045 20 1 0 CSO000747 15-NOV-05 100000145
FO DDU 8 IPW0000017 1 00000043_078
1
5 15-NOV-05 1 10
IIO0000465 100000036 20 1 0 CSO000744 15-NOV-05 100000114
FO DDU 2 IPW0000017 1 00000043_078
1
5 15-NOV-05 1 10
IIO0000467 100000045 20 1 0 CSO000744 15-NOV-05 100000114
FO DDU 2 IPW0000017 1 00000043_078
1
5 15-NOV-05 1 10
18 rows selected.
Elapsed: 00:00:00.22
Execution Plan
Plan hash value: 1730223965
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
| 0 | SELECT STATEMENT | | 18 | 10278 | 877 (0)| 00:00:11 |
| 1 | NESTED LOOPS | | 18 | 10278 | 877 (0)| 00:00:11 |
| 2 | NESTED LOOPS | | 18 | 8424 | 841 (0)| 00:00:11 |
| 3 | MERGE JOIN CARTESIAN | | 18 | 4680 | 805 (0)| 00:00:10 |
| 4 | TABLE ACCESS FULL | XML_ORDERS | 1 | 67 | 3 (0)| 00:00:01 |
| 5 | BUFFER SORT | | 18 | 3474 | 802 (0)| 00:00:10 |
| 6 | INDEX FAST FULL SCAN| SYS_IOT_TOP_64187 | 18 | 3474 | 802 (0)| 00:00:10 |
|* 7 | INDEX UNIQUE SCAN | SYS_IOT_TOP_64185 | 1 | 208 | 2 (0)| 00:00:01 |
|* 8 | INDEX RANGE SCAN | SYS_C008783 | 1 | | 0 (0)| 00:00:01 |
|* 9 | INDEX UNIQUE SCAN | SYS_IOT_TOP_64183 | 1 | 103 | 2 (0)| 00:00:01 |
|* 10 | INDEX RANGE SCAN | SYS_C008785 | 1 | | 0 (0)| 00:00:01 |
Predicate Information (identified by operation id):
7 - access("NESTED_TABLE_ID"="CUSTOMER_TAB"."SYS_NC0000800009$")
8 - access("NESTED_TABLE_ID"="CUSTOMER_TAB"."SYS_NC0000800009$")
9 - access("NESTED_TABLE_ID"="PICKWAVE_TAB"."SYS_NC0000800009$")
filter("NESTED_TABLE_ID"="XML_ORDERS"."SYS_NC0001000011$")
10 - access("NESTED_TABLE_ID"="PICKWAVE_TAB"."SYS_NC0000800009$")
Note
- dynamic sampling used for this statement
SQL> quit
Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning, OLAP and Data Mining options
C:\oracle\xdb\otn\347125>You were sequencing the ProdRun node, which is a mistake. Only nodes which occur multiple times should be sequenced... -
How to create index on XMLType column extension?
I have an XMLType column named "info" whose corresponding global element has a complexType "InfoType" in namespace "http://example.org/ord". The "InfoType" complexType is extended in two namespaces, "http://example.org/info/zipcode" and "http://example.org/info/street". How do I create a unique index using an "InfoType" element contributed from one of the extension namespaces?
I have included below a SQL script that completely describes the problem.
Thanks in advance for your assistance?
- Ron
BEGIN
DBMS_XMLSCHEMA.registerSchema(
'chapter04prod.xsd',
'<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns="http://example.org/prod"
targetNamespace="http://example.org/prod"
elementFormDefault="unqualified">
<xsd:complexType name="ItemsType">
<xsd:sequence>
<xsd:element name="product" type="ProductType"/>
</xsd:sequence>
</xsd:complexType>
<xsd:complexType name="ProductType">
<xsd:sequence>
<xsd:element name="number" type="xsd:integer"/>
<xsd:element name="name" type="xsd:string"/>
<xsd:element name="size" type="SizeType"/>
<xsd:element name="color" type="ColorType"/>
</xsd:sequence>
</xsd:complexType>
<xsd:complexType name="SizeType">
<xsd:simpleContent>
<xsd:extension base="xsd:integer">
<xsd:attribute name="system" type="xsd:string"/>
</xsd:extension>
</xsd:simpleContent>
</xsd:complexType>
<xsd:complexType name="ColorType">
<xsd:attribute name="value" type="xsd:string"/>
</xsd:complexType>
</xsd:schema>',
TRUE,
TRUE,
FALSE,
FALSE);
END;
BEGIN
DBMS_XMLSCHEMA.registerSchema(
'chapter04ord1.xsd',
'<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
targetNamespace="http://example.org/ord"
xmlns="http://example.org/ord"
xmlns:prod="http://example.org/prod"
elementFormDefault="qualified">
<xsd:import namespace="http://example.org/prod"
schemaLocation="chapter04prod.xsd"/>
<xsd:simpleType name="OrderNumType">
<xsd:restriction base="xsd:string"/>
</xsd:simpleType>
<xsd:complexType name="InfoType"/>
<xsd:complexType name="CustomerType">
<xsd:all>
<xsd:element name="name" type="CustNameType"/>
<xsd:element name="number" type="xsd:integer"/>
<xsd:element name="info" type="InfoType" form="unqualified"/>
</xsd:all>
</xsd:complexType>
<xsd:simpleType name="CustNameType">
<xsd:restriction base="xsd:string"/>
</xsd:simpleType>
<xsd:element name="order" type="OrderType"/>
<xsd:element name="customer" type="CustomerType"/>
<xsd:complexType name="OrderType">
<xsd:sequence>
<xsd:element name="number" type="OrderNumType"/>
<xsd:element name="customer" type="CustomerType"
maxOccurs="unbounded"/>
<xsd:element name="items" type="prod:ItemsType"/>
</xsd:sequence>
</xsd:complexType>
</xsd:schema>',
TRUE,
TRUE,
FALSE,
FALSE);
END;
BEGIN
DBMS_XMLSCHEMA.registerSchema(
'chapter04infozipcode.xsd',
'<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:ord="http://example.org/ord"
xmlns="http://example.org/info/zipcode"
targetNamespace="http://example.org/info/zipcode"
elementFormDefault="unqualified">
<xsd:import namespace="http://example.org/ord"
schemaLocation="chapter04ord1.xsd"/>
<xsd:complexType name="InfoType">
<xsd:complexContent>
<xsd:extension base="ord:InfoType">
<xsd:sequence>
<xsd:element name="zipcode" type="xsd:string"/>
</xsd:sequence>
</xsd:extension>
</xsd:complexContent>
</xsd:complexType>
</xsd:schema>',
TRUE,
TRUE,
FALSE,
FALSE);
END;
BEGIN
DBMS_XMLSCHEMA.registerSchema(
'chapter04infostreet.xsd',
'<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:ord="http://example.org/ord"
xmlns="http://example.org/info/street"
targetNamespace="http://example.org/info/street"
elementFormDefault="unqualified">
<xsd:import namespace="http://example.org/ord"
schemaLocation="chapter04ord1.xsd"/>
<xsd:complexType name="InfoType">
<xsd:complexContent>
<xsd:extension base="ord:InfoType">
<xsd:sequence>
<xsd:element name="street" type="xsd:string"/>
</xsd:sequence>
</xsd:extension>
</xsd:complexContent>
</xsd:complexType>
</xsd:schema>',
TRUE,
TRUE,
FALSE,
FALSE);
END;
BEGIN
DBMS_XMLSCHEMA.registerSchema(
'chapter04nonamespace.xsd',
'<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:ord="http://example.org/ord">
<xsd:import namespace="http://example.org/ord"
schemaLocation="chapter04ord1.xsd"/>
<xsd:element name="info" type="ord:InfoType">
</xsd:schema>',
TRUE,
TRUE,
FALSE,
FALSE);
END;
CREATE TABLE customer (
name VARCHAR(64),
number INTEGER,
info XMLTYPE)
XMLType info STORE AS OBJECT RELATIONAL
XMLSCHEMA "chapter04nonamespace.xsd"
ELEMENT "info";
INSERT INTO customer (name, number, info)
VALUES ('George Jones', 1,
XMLType(
'<info xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:street="http://example.org/info/zipcode"
xsi:type="zipcode:InfoType">
<zipcode>28877</zipcode>
</info>');
INSERT INTO customer (name, number, info)
VALUES ('Jim Jones', 2,
XMLType(
'<info xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:street="http://example.org/info/street"
xsi:type="street:InfoType">
<street>3456 Autumn Lane</street>
</info>');
SELECT name,
extractValue(info, '/info/street')
FROM customer
WHERE extractValue(info, '/info/street/text()') LIKE '3456%';
-- How does one create a unique index as follows?
CREATE UNIQUE INDEX customer_infostreet ON customer (??????);
-- The following insert should fail with unique index violation!
INSERT INTO customer (name, number, info)
VALUES ('Jerry Jones', 3,
XMLType(
'<info xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:street="http://example.org/info/street"
xsi:type="street:InfoType">
<street>3456 Autumn Lane</street>
</info>');Ron
Glad you found a solution.. However a more efficient solution is show below
SQL> connect sys/ as sysdba
Enter password:
Connected.
SQL> set define on
SQL> --
SQL> define USERNAME = OTNTEST
SQL> --
SQL> def PASSWORD = OTNTEST
SQL> --
SQL> def USER_TABLESPACE = USERS
SQL> --
SQL> def TEMP_TABLESPACE = TEMP
SQL> --
SQL> drop user &USERNAME cascade
2 /
old 1: drop user &USERNAME cascade
new 1: drop user OTNTEST cascade
User dropped.
SQL> grant connect, resource to &USERNAME identified by &PASSWORD
2 /
old 1: grant connect, resource to &USERNAME identified by &PASSWORD
new 1: grant connect, resource to OTNTEST identified by OTNTEST
Grant succeeded.
SQL> grant create any directory, drop any directory to &USERNAME
2 /
old 1: grant create any directory, drop any directory to &USERNAME
new 1: grant create any directory, drop any directory to OTNTEST
Grant succeeded.
SQL> grant alter session, create view to &USERNAME
2 /
old 1: grant alter session, create view to &USERNAME
new 1: grant alter session, create view to OTNTEST
Grant succeeded.
SQL> alter user &USERNAME default tablespace &USER_TABLESPACE temporary tablespace &TEMP_TABLESPACE
2 /
old 1: alter user &USERNAME default tablespace &USER_TABLESPACE temporary tablespace &TEMP_TABLESPACE
new 1: alter user OTNTEST default tablespace USERS temporary tablespace TEMP
User altered.
SQL> connect &USERNAME/&PASSWORD
Connected.
SQL> --
SQL> alter session set events ='19027 trace name context forever, level 0x800'
2 /
Session altered.
SQL> BEGIN
2 DBMS_XMLSCHEMA.registerSchema(
3 'chapter04prod.xsd',
4 '<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="http://example.org/prod" targetNamespa
fault="unqualified">
5 <xsd:complexType name="ItemsType">
6 <xsd:sequence>
7 <xsd:element name="product" type="ProductType"/>
8 </xsd:sequence>
9 </xsd:complexType>
10 <xsd:complexType name="ProductType">
11 <xsd:sequence>
12 <xsd:element name="num" type="xsd:integer"/>
13 <xsd:element name="name" type="xsd:string"/>
14 <xsd:element name="size" type="SizeType"/>
15 <xsd:element name="color" type="ColorType"/>
16 </xsd:sequence>
17 </xsd:complexType>
18 <xsd:complexType name="SizeType">
19 <xsd:simpleContent>
20 <xsd:extension base="xsd:integer">
21 <xsd:attribute name="system" type="xsd:string"/>
22 </xsd:extension>
23 </xsd:simpleContent>
24 </xsd:complexType>
25 <xsd:complexType name="ColorType">
26 <xsd:attribute name="value" type="xsd:string"/>
27 </xsd:complexType>
28 </xsd:schema>',
29 TRUE, TRUE, FALSE, FALSE);
30 END;
31 /
PL/SQL procedure successfully completed.
SQL> BEGIN
2 DBMS_XMLSCHEMA.registerSchema(
3 'chapter04ord1.xsd',
4 '<xsd:schema xmlns:xdb="http://xmlns.oracle.com/xdb" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns
://example.org/prod" targetNamespace="http://example.org/ord" elementFormDefault="qualified">
5 <xsd:import namespace="http://example.org/prod" schemaLocation="chapter04prod.xsd"/>
6 <xsd:simpleType name="OrderNumType">
7 <xsd:restriction base="xsd:string"/>
8 </xsd:simpleType>
9 <xsd:complexType name="InfoType" xdb:SQLType="INFO_TYPE_T"/>
10 <xsd:complexType name="CustomerType">
11 <xsd:all>
12 <xsd:element name="name" type="CustNameType"/>
13 <xsd:element name="num" type="xsd:integer"/>
14 <xsd:element name="info" type="InfoType" minOccurs="1" form="unqualified"/>
15 </xsd:all>
16 </xsd:complexType>
17 <xsd:simpleType name="CustNameType">
18 <xsd:restriction base="xsd:string"/>
19 </xsd:simpleType>
20 <xsd:element name="customers" type="CustomersType"/>
21 <xsd:complexType name="CustomersType">
22 <xsd:sequence>
23 <xsd:element name="customer" type="CustomerType" minOccurs="0" maxOccurs="unbounded"
24 </xsd:sequence>
25 </xsd:complexType>
26 <xsd:element name="order" type="OrderType"/>
27 <xsd:element name="customer" type="CustomerType"/>
28 <xsd:complexType name="OrderType">
29 <xsd:sequence>
30 <xsd:element name="num" type="OrderNumType"/>
31 <xsd:element name="customer" type="CustomerType" maxOccurs="unbounded"/>
32 <xsd:element name="items" type="prod:ItemsType"/>
33 </xsd:sequence>
34 </xsd:complexType>
35 </xsd:schema>',
36 TRUE, TRUE, FALSE, FALSE);
37 END;
38 /
PL/SQL procedure successfully completed.
SQL> BEGIN
2 DBMS_XMLSCHEMA.registerSchema(
3 'chapter04infozipcode.xsd',
4 '<xsd:schema xmlns:xdb="http://xmlns.oracle.com/xdb" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns
//example.org/info/zipcode" targetNamespace="http://example.org/info/zipcode" elementFormDefault="unqualifie
5 <xsd:import namespace="http://example.org/ord" schemaLocation="chapter04ord1.xsd"/>
6 <xsd:complexType name="InfoType" xdb:SQLType="ZIPCODE_INFO_TYPE_T">
7 <xsd:complexContent>
8 <xsd:extension base="ord:InfoType">
9 <xsd:sequence>
10 <xsd:element name="zipcode" type="xsd:string"/>
11 <xsd:element name="suffix" type="xsd:string"/>
12 </xsd:sequence>
13 </xsd:extension>
14 </xsd:complexContent>
15 </xsd:complexType>
16 </xsd:schema>',
17 TRUE, TRUE, FALSE, FALSE);
18 END;
19 /
PL/SQL procedure successfully completed.
SQL>
SQL> BEGIN
2 DBMS_XMLSCHEMA.registerSchema(
3 'chapter04infostreet.xsd',
4 '<xsd:schema xmlns:xdb="http://xmlns.oracle.com/xdb" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns
//example.org/info/street" targetNamespace="http://example.org/info/street" elementFormDefault="unqualified"
5 <xsd:import namespace="http://example.org/ord" schemaLocation="chapter04ord1.xsd"/>
6 <xsd:complexType name="InfoType" xdb:SQLType="STREET_INFO_TYPE_T">
7 <xsd:complexContent>
8 <xsd:extension base="ord:InfoType">
9 <xsd:sequence>
10 <xsd:element name="street" type="xsd:string"/>
11 <xsd:element name="suffix" type="xsd:string"/>
12 </xsd:sequence>
13 </xsd:extension>
14 </xsd:complexContent>
15 </xsd:complexType>
16 </xsd:schema>',
17 TRUE, TRUE, FALSE, FALSE);
18 END;
19 /
PL/SQL procedure successfully completed.
SQL>
SQL> BEGIN
2 DBMS_XMLSCHEMA.registerSchema(
3 'chapter04nonamespace.xsd',
4 '<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:ord="http://example.org/ord">
5 <xsd:import namespace="http://example.org/ord" schemaLocation="chapter04ord1.xsd"/>
6 <xsd:element name="info" type="ord:InfoType"/>
7 </xsd:schema>',
8 TRUE, TRUE, FALSE, FALSE);
9 END;
10 /
PL/SQL procedure successfully completed.
SQL>
SQL> CREATE TABLE customer (
2 name VARCHAR(64),
3 num INTEGER,
4 info XMLTYPE)
5 XMLType info STORE AS OBJECT RELATIONAL
6 XMLSCHEMA "chapter04nonamespace.xsd"
7 ELEMENT "info";
Table created.
SQL>
SQL> INSERT INTO customer (name, num, info)
2 VALUES ('George Jones', 1,
3 XMLType(
4 '<info xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:zipcode="http://example.org/info/zip
5 <zipcode>28877</zipcode>
6 <suffix>s1</suffix>
7 </info>'));
1 row created.
SQL>
SQL> INSERT INTO customer (name, num, info)
2 VALUES ('Jim Jones', 2,
3 XMLType(
4 '<info xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:street="http://example.org/info/stre
5 <street>3456 Autumn Lane</street>
6 <suffix>s2</suffix>
7 </info>'));
1 row created.
SQL> /
1 row created.
SQL> SELECT name,
2 extractValue(info, '/info/zipcode'),
3 extractValue(info, '/info/street')
4 FROM customer
5 WHERE extractValue(info, '/info/zipcode/text()') LIKE '2%'
6 OR extractValue(info, '/info/street/text()') LIKE '3456%';
NAME
EXTRACTVALUE(INFO,'/INFO/ZIPCODE')
EXTRACTVALUE(INFO,'/INFO/STREET')
George Jones
28877
Jim Jones
3456 Autumn Lane
NAME
EXTRACTVALUE(INFO,'/INFO/ZIPCODE')
EXTRACTVALUE(INFO,'/INFO/STREET')
Jim Jones
3456 Autumn Lane
SQL>
SQL> CREATE UNIQUE INDEX customer_infozipcode ON customer(
2 extractValue
3 (
4 info,
5 '/info[@xsi:type="zipcode:InfoType"]/zipcode',
6 'xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
7 xmlns:zipcode="http://example.org/info/zipcode"'
8 ))
9 /
Index created.
SQL> select column_name
2 from user_ind_columns
3 where INDEX_NAME = 'CUSTOMER_INFOZIPCODE'
4 /
COLUMN_NAME
SYS_NC00014$
SQL> select INDEX_NAME,COLUMN_EXPRESSION
2 from user_ind_expressions
3 /
INDEX_NAME
COLUMN_EXPRESSION
CUSTOMER_INFOZIPCODE
EXTRACTVALUE(SYS_MAKEXML('0341F05603124922B4F6F94DC5E30C2F',4870,"SYS_NC00004$",
SQL> DROP INDEX CUSTOMER_INFOZIPCODE
2 /
Index dropped.
SQL> desc INFO_TYPE_T
INFO_TYPE_T is NOT FINAL
Name Null? Type
SYS_XDBPD$ XDB.XDB$RAW_LIST_T
SQL> --
SQL> desc ZIPCODE_INFO_TYPE_T
ZIPCODE_INFO_TYPE_T extends OTNTEST.INFO_TYPE_T
ZIPCODE_INFO_TYPE_T is NOT FINAL
Name Null? Type
SYS_XDBPD$ XDB.XDB$RAW_LIST_T
zipcode VARCHAR2(4000 CHAR)
suffix VARCHAR2(4000 CHAR)
SQL> --
SQL> desc STREET_INFO_TYPE_T
STREET_INFO_TYPE_T extends OTNTEST.INFO_TYPE_T
STREET_INFO_TYPE_T is NOT FINAL
Name Null? Type
SYS_XDBPD$ XDB.XDB$RAW_LIST_T
street VARCHAR2(4000 CHAR)
suffix VARCHAR2(4000 CHAR)
SQL> --
SQL> CREATE UNIQUE INDEX customer_infozipcode ON customer(TREAT(INFO.XMLDATA AS ZIPCODE_INFO_TYPE_T)."zipcod
2 /
Index created.
SQL> select column_name
2 from user_ind_columns
3 where INDEX_NAME = 'CUSTOMER_INFOZIPCODE'
4 /
COLUMN_NAME
TREAT("SYS_NC00007$" AS "ZIPCODE_INFO_TYPE_T")."zipcode"
SQL> select INDEX_NAME,COLUMN_EXPRESSION
2 from user_ind_expressions
3 /
no rows selected
SQL> INSERT INTO customer (name, num, info)
2 VALUES ('Jerry Jones', 3,
3 XMLType(
4 '<info xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:zipcode="http://example.org/info/zip
5 <zipcode>28877</zipcode>
6 <suffix>s1</suffix>
7 </info>'))
8 /
INSERT INTO customer (name, num, info)
ERROR at line 1:
ORA-00001: unique constraint (OTNTEST.CUSTOMER_INFOZIPCODE) violated
SQL> INSERT INTO customer (name, num, info)
2 VALUES ('Jerry Jones', 3,
3 XMLType(
4 '<info xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:street="http://example.org/info/stre
5 <street>3456 Autumn Lane</street>
6 <suffix>s3</suffix>
7 </info>'))
8 /
1 row created.
SQL>In you solution a functional index was created. In my case, by breaking the XML abstraction, and using object-relational SQL to create the index (DDL statements are the one case where I feel this is acceptable) I was able to create a pure B-TREE index which has the same effect.. -
How to create view for xmltype table in oracle
hi:
Can some one help me how to create view for xmltype table in oracle?
XMLType do not have column
SemThank you !!
I read it and become very hard to implement what I want to do.
Can you give me example please?
My main goal to create view for xmltype table is to XQuery the XML data?
Do you have any other suggestion?
Please help
Ali_2 -
XQuery all docs in an XMLType column?
I created the following table:
create table security(sdoc XMLType)
I inserted xml files:
insert into security values (xmltype(?))
Now I want to query the xml docs using XQuery.
Is there a way to query all xml docs in a XMLType column with an XQuery expression at once?
Like:
for $i in function(sdoc)
where $i/Symbol = "ABCD"
return $i
Is there a function that returns an XML Sequence that consist of all docs in the XMLType column? Or do I have to adopt the query tuple by tuple?
I looked in the 10g Release 2 documentation and found the function XMLQuery, but my understanding was that the XMLQuery-function only takes one tuple (one doc). Is that right?
I'm using JDBC to connect to the database. Do you have a hint how I can use the XQuery inside XMLQuery in my case?
Thanks in advancethx for your help!! But I still have a problem.
I created an XMLType table:
create table security of xmltype
I inserted 10 xml docs:
insert into security values(xmltype(?))
The xml docs are like this:
<?xml version="1.0" encoding="US-ASCII"?>
<Security id="10000">
<Symbol>ATRK</Symbol>
<Name>@Track Communications, Inc.</Name>
<ShortName>ATRK</ShortName>
<SecurityType>Stock</SecurityType>
<SecurityInformation><StockInformation><Sector>Healthcare</Sector>
<Industry>Constr.-Supplies&Fixtures</Industry>
<Industry>BusinessServices</Industry>
<Industry>Auto&TruckManufacturers</Industry>
<Industry>FoodProcessing</Industry>
<Industry>OilWellServices&Equipment</Industry>
<Industry>Oil&Gas-Integrated</Industry>
<Category Capitalization="Large" Class="Blend"></Category>
<OutstShares>221841392</OutstShares>
</StockInformation>
<Description>
</Description>
</SecurityInformation>
<Price><LastTrade>91.5358</LastTrade>
<Ask>92.1646</Ask>
<Bid>91.2767</Bid>
<Price50DayAvg>105.3278</Price50DayAvg>
<Price200DayAvg>96.2106</Price200DayAvg>
<PriceToday><PreviousClose>91.5358</PreviousClose>
<Open>94.6341</Open>
<High>99.3516</High>
<Low>93.8742</Low>
</PriceToday>
<Price52week><Price52week-low>93.8742</Price52week-low>
<Price52week-low-date>2004-09-10</Price52week-low-date>
<Price52week-high>105.3278</Price52week-high>
<Price52week-high-date>2004-08-01</Price52week-high-date>
</Price52week>
</Price>
<PE>20.38</PE>
<Yield>6.95</Yield>
<DivPerShare>4.75</DivPerShare>
</Security>
But when I run the query:
Select xmlquery('for $i in ora:view("security")/Security/Symbol return $i' returning content).extract('/*') RESULT from security
I'm getting this:
<Symbol>TDSC</Symbol>
<Symbol>ATRK</Symbol>
<Symbol>OIIM</Symbol>
<Symbol>CTAC</Symbol>
<Symbol>FLWS</Symbol>
<Symbol>ATTY</Symbol>
<Symbol>FCCY</Symbol>
<Symbol>SRCE</Symbol>
<Symbol>TFSM</Symbol>
<Symbol>COMS</Symbol>
<Symbol>TDSC</Symbol>
<Symbol>ATRK</Symbol>
<Symbol>OIIM</Symbol>
<Symbol>CTAC</Symbol>
<Symbol>FLWS</Symbol>
<Symbol>ATTY</Symbol>
<Symbol>FCCY</Symbol>
<Symbol>SRCE</Symbol>
<Symbol>TFSM</Symbol>
<Symbol>COMS</Symbol>
<Symbol>TDSC</Symbol>
<Symbol>ATRK</Symbol>
<Symbol>OIIM</Symbol>
<Symbol>CTAC</Symbol>
<Symbol>FLWS</Symbol>
<Symbol>ATTY</Symbol>
<Symbol>FCCY</Symbol>
<Symbol>SRCE</Symbol>
<Symbol>TFSM</Symbol>
<Symbol>COMS</Symbol>
<Symbol>TDSC</Symbol>
<Symbol>ATRK</Symbol>
<Symbol>OIIM</Symbol>
<Symbol>CTAC</Symbol>
<Symbol>FLWS</Symbol>
<Symbol>ATTY</Symbol>
<Symbol>FCCY</Symbol>
<Symbol>SRCE</Symbol>
<Symbol>TFSM</Symbol>
<Symbol>COMS</Symbol>
<Symbol>TDSC</Symbol>
<Symbol>ATRK</Symbol>
<Symbol>OIIM</Symbol>
<Symbol>CTAC</Symbol>
<Symbol>FLWS</Symbol>
<Symbol>ATTY</Symbol>
<Symbol>FCCY</Symbol>
<Symbol>SRCE</Symbol>
<Symbol>TFSM</Symbol>
<Symbol>COMS</Symbol>
<Symbol>TDSC</Symbol>
<Symbol>ATRK</Symbol>
<Symbol>OIIM</Symbol>
<Symbol>CTAC</Symbol>
<Symbol>FLWS</Symbol>
<Symbol>ATTY</Symbol>
<Symbol>FCCY</Symbol>
<Symbol>SRCE</Symbol>
<Symbol>TFSM</Symbol>
<Symbol>COMS</Symbol>
<Symbol>TDSC</Symbol>
<Symbol>ATRK</Symbol>
<Symbol>OIIM</Symbol>
<Symbol>CTAC</Symbol>
<Symbol>FLWS</Symbol>
<Symbol>ATTY</Symbol>
<Symbol>FCCY</Symbol>
<Symbol>SRCE</Symbol>
<Symbol>TFSM</Symbol>
<Symbol>COMS</Symbol>
<Symbol>TDSC</Symbol>
<Symbol>ATRK</Symbol>
<Symbol>OIIM</Symbol>
<Symbol>CTAC</Symbol>
<Symbol>FLWS</Symbol>
<Symbol>ATTY</Symbol>
<Symbol>FCCY</Symbol>
<Symbol>SRCE</Symbol>
<Symbol>TFSM</Symbol>
<Symbol>COMS</Symbol>
<Symbol>TDSC</Symbol>
<Symbol>ATRK</Symbol>
<Symbol>OIIM</Symbol>
<Symbol>CTAC</Symbol>
<Symbol>FLWS</Symbol>
<Symbol>ATTY</Symbol>
<Symbol>FCCY</Symbol>
<Symbol>SRCE</Symbol>
<Symbol>TFSM</Symbol>
<Symbol>COMS</Symbol>
<Symbol>TDSC</Symbol>
<Symbol>ATRK</Symbol>
<Symbol>OIIM</Symbol>
<Symbol>CTAC</Symbol>
<Symbol>FLWS</Symbol>
<Symbol>ATTY</Symbol>
<Symbol>FCCY</Symbol>
<Symbol>SRCE</Symbol>
<Symbol>TFSM</Symbol>
<Symbol>COMS</Symbol>
10 times the expected result. But it makes sense since I have 10 rows, I get the xquery result for each row. Is there way to get it only once??
I translated the xquery into sql using extract (extractValue):
Select extract(object_value, '/Security/Symbol')
From security
And I'm getting the expected result: only one time the above result. But I don't want to translate all of my xqueries.
thx in advance!! -
Getting the system generated column name for xmltype column
Hello,
how i can get the internal column name (p.a. SYS_NC00001$) for a xmltype column? I cannot find a correct dictionary view .
I need that for moving a xmltype lob partition to another tablespace.
Thanks,
MaikRDoes the following help:
http://www.idevelopment.info/data/Oracle/DBA_tips/LOBs/LOBS_2.shtml
http://www.liberidu.com/blog/?p=264 -
Hi,
I'm trying to use exp/imp utilities to backup my schema.
One of the tables (REQUEST) has an XMLTYPE column in it. I can successfully export the user with all objects:
exp userid=testuser/testuser@qabfi parfile==exp_testuser.dat
But when
I'm trying to imp the user, I'm getting an Oracle error:
imp testuser/testuser@qabfi file=testuser.dmp full=yes
. . importing table "REQUEST"
IMP-00058: ORACLE error 942 encountered
ORA-00942: table or view does not exist
IMP-00028: partial import of previous table rolled back: 40 rows roll back
Actually, no rows are imported.
But after I drop XMLTYPE column from REQUEST table, exp/imp work just fine.
Does anybody know anything about this problem, and is there any workaround?
Thanks -
AllaCould be a bug. Refer to Note 526464.996 on Metalink
-
Difficulty extracting from XMLTYPE column using XMLTABLE
Hi Folks.
I am currently trying to shred the contents of an XML document that is stored on our schema in a XMLType column. The XMLYTYPE column is pointing to several schemas that are registered within the database.
If I take a subset of the XML from one of the files and create an XMLTYPE column on the fly, I am able to extract data using the XMLTABLE syntax. If I try the same thing on the XMLTYPE column in the table registered to schemas stored in the database I get no joy.
Please see below for an example.
Please note that this is only a small segment of the original XML document which is very large. The XML document has one <RTDRFileHeader> and <ConnectionList> nodes per document but many <Connection> nodes beneath the <ConnectionList>.
My requirement is to RETRIEVE ALL the data contained in the <Connection> elements beneath the <ConnectionList>. How do I achieve this?
CREATE TABLE ag_test2 as
SELECT XMLTYPE(
'<RTDR xmlns:tadig-gen="https://infocentre.gsm.org/TADIG-GEN" xmlns="https://infocentre.gsm.org/TADIG-RTDR">
<RTDRFileHeader>
<Prefix>MRTDR</Prefix>
<Sender>EDSCH</Sender>
<Recipient>NXTMP</Recipient>
<PMN>UKRAS</PMN>
<ReportSeqNo>5</ReportSeqNo>
<TADIGGenSchemaVersion>2.2</TADIGGenSchemaVersion>
<RTDRSchemaVersion>1.1</RTDRSchemaVersion>
<CreationTmstp>2009-09-04T04:04:00.000000+02:00</CreationTmstp>
</RTDRFileHeader>
<ConnectionList xmlns="https://infocentre.gsm.org/TADIG-RTDR">
<Connection xmlns="https://infocentre.gsm.org/TADIG-RTDR">
<VPMN>UKRAS</VPMN>
<HPMN>LIEK9</HPMN>
<FileItemList>
<FileItem>
<FileID>CDUKRASLIEK901274-00005-m</FileID>
<ExchTmstp>2009-08-24T12:07:22.000000+02:00</ExchTmstp>
<FileType>
<InitTAP>
<TAPSeqNo>1274</TAPSeqNo>
<NotifFileInd>true</NotifFileInd>
<ChargeInfo>
<TAPTxCutoffTmstp>2009-08-24T12:52:10.000000+03:00</TAPTxCutoffTmstp>
<TAPAvailTmstp>2009-08-24T11:52:10.000000+02:00</TAPAvailTmstp>
<TAPCurrency>SDR</TAPCurrency>
<TotalNetCharge>0</TotalNetCharge>
<TotalTax>0</TotalTax>
</ChargeInfo>
</InitTAP>
</FileType>
</FileItem>
<FileItem>
<FileID>CDUKRASLIEK901280-00005-m</FileID>
<ExchTmstp>2009-08-30T12:14:39.000000+02:00</ExchTmstp>
<FileType>
<InitTAP>
<TAPSeqNo>1280</TAPSeqNo>
<NotifFileInd>true</NotifFileInd>
<ChargeInfo>
<TAPTxCutoffTmstp>2009-08-30T12:52:34.000000+03:00</TAPTxCutoffTmstp>
<TAPAvailTmstp>2009-08-30T11:52:34.000000+02:00</TAPAvailTmstp>
<TAPCurrency>SDR</TAPCurrency>
<TotalNetCharge>0</TotalNetCharge>
<TotalTax>0</TotalTax>
</ChargeInfo>
</InitTAP>
</FileType>
</FileItem>
</FileItemList>
</Connection>
</ConnectionList>
</RTDR> ') as xml from dual
Question: When I run the following query no rows are returned although the table is populated with XML segment above. Any explanation as to why and how can I resolve this?
SELECT rtd2."VPMN"
,rtd2."Recipient"
,rtd2."ReportSeqNo"
FROM ag_test2 r
,XMLTABLE('/RTDR'
PASSING r.xml
COLUMNS "VPMN" VARCHAR2(5) PATH '/RTDRFileHeader/ConnectionList/Connection/VPMN'
,"Recipient" VARCHAR2(5) PATH '/RTDRFileHeader/Recipient'
,"ReportSeqNo" INTEGER PATH '/RTDRFileHeader/ReportSeqNo'
) rtd2; From my other investigations the following query works OK when the same XML segment is created dynamically by performing an SELECT XMLTYPE ... FROM DUAL compared to the method above. Can anybody provide an explanation?
WITH t as (select XMLTYPE(
'<RTDR>
<RTDRFileHeader>
<Prefix>MRTDR</Prefix>
<Sender>EDSCH</Sender>
<Recipient>NXTMP</Recipient>
<PMN>UKRAS</PMN>
<ReportSeqNo>5</ReportSeqNo>
<TADIGGenSchemaVersion>2.2</TADIGGenSchemaVersion>
<RTDRSchemaVersion>1.1</RTDRSchemaVersion>
<CreationTmstp>2009-09-04T04:04:00.000000+02:00</CreationTmstp>
</RTDRFileHeader>
<ConnectionList>
<Connection>
<VPMN>UKRAS</VPMN>
<HPMN>LIEK9</HPMN>
<FileItemList>
<FileItem>
<FileID>CDUKRASLIEK901274-00005-m</FileID>
<ExchTmstp>2009-08-24T12:07:22.000000+02:00</ExchTmstp>
<FileType>
<InitTAP>
<TAPSeqNo>1274</TAPSeqNo>
<NotifFileInd>true</NotifFileInd>
<ChargeInfo>
<TAPTxCutoffTmstp>2009-08-24T12:52:10.000000+03:00</TAPTxCutoffTmstp>
<TAPAvailTmstp>2009-08-24T11:52:10.000000+02:00</TAPAvailTmstp>
<TAPCurrency>SDR</TAPCurrency>
<TotalNetCharge>0</TotalNetCharge>
<TotalTax>0</TotalTax>
</ChargeInfo>
</InitTAP>
</FileType>
</FileItem>
<FileItem>
<FileID>CDUKRASLIEK901280-00005-m</FileID>
<ExchTmstp>2009-08-30T12:14:39.000000+02:00</ExchTmstp>
<FileType>
<InitTAP>
<TAPSeqNo>1280</TAPSeqNo>
<NotifFileInd>true</NotifFileInd>
<ChargeInfo>
<TAPTxCutoffTmstp>2009-08-30T12:52:34.000000+03:00</TAPTxCutoffTmstp>
<TAPAvailTmstp>2009-08-30T11:52:34.000000+02:00</TAPAvailTmstp>
<TAPCurrency>SDR</TAPCurrency>
<TotalNetCharge>0</TotalNetCharge>
<TotalTax>0</TotalTax>
</ChargeInfo>
</InitTAP>
</FileType>
</FileItem>
</FileItemList>
</Connection>
</ConnectionList>
</RTDR> ') as xml from dual )
SELECT rtd2."VPMN"
,rtd2."HPMN"
FROM t r
,XMLTABLE('/RTDR/ConnectionList'
PASSING r.xml
COLUMNS "VPMN" VARCHAR2(5) PATH '/ConnectionList/Connection/VPMN'
,"HPMN" VARCHAR2(5) PATH '/ConnectionList/Connection/HPMN'
) rtd2;
Any comments, suggestions, pointers gratefully received.
Many thanks
Kind regards
Simon GaddSimon
It appears to work as expected for me in 11.2.0.1.0
C:\xdb\customers\Mapeley>sqlplus /nolog @testcase %CD%
SQL*Plus: Release 11.2.0.1.0 Production on Wed Nov 18 14:26:56 2009
Copyright (c) 1982, 2009, Oracle. All rights reserved.
SQL> spool testase.log
SQL> --
SQL> connect / as sysdba
Connected.
SQL> --
SQL> set define on
SQL> set timing on
SQL> --
SQL> define USERNAME = MAPELEY
SQL> --
SQL> def PASSWORD = &USERNAME
SQL> --
SQL> def XMLDIR = &1
SQL> --
SQL> def USER_TABLESPACE = USERS
SQL> --
SQL> def TEMP_TABLESPACE = TEMP
SQL> --
SQL> drop user &USERNAME cascade
2 /
old 1: drop user &USERNAME cascade
new 1: drop user MAPELEY cascade
User dropped.
Elapsed: 00:00:04.57
SQL> grant create any directory, drop any directory, connect, resource, alter se
ssion, create view to &USERNAME identified by &PASSWORD
2 /
old 1: grant create any directory, drop any directory, connect, resource, alte
r session, create view to &USERNAME identified by &PASSWORD
new 1: grant create any directory, drop any directory, connect, resource, alte
r session, create view to MAPELEY identified by MAPELEY
Grant succeeded.
Elapsed: 00:00:00.03
SQL> alter user &USERNAME default tablespace &USER_TABLESPACE temporary tablespa
ce &TEMP_TABLESPACE
2 /
old 1: alter user &USERNAME default tablespace &USER_TABLESPACE temporary tabl
espace &TEMP_TABLESPACE
new 1: alter user MAPELEY default tablespace USERS temporary tablespace TEMP
User altered.
Elapsed: 00:00:00.00
SQL> connect &USERNAME/&PASSWORD
Connected.
SQL> --
SQL> create or replace directory XMLDIR as '&XMLDIR'
2 /
old 1: create or replace directory XMLDIR as '&XMLDIR'
new 1: create or replace directory XMLDIR as 'C:\xdb\customers\Mapeley'
Directory created.
Elapsed: 00:00:00.01
SQL> var SCHEMAURL varchar2(256)
SQL> VAR XMLSCHEMA CLOB;
SQL> VAR INSTANCE CLOB;
SQL> VAR DOCPATH VARCHAR2(700)
SQL> --
SQL> set define off
SQL> --
SQL> alter session set events='31098 trace name context forever'
2 /
Session altered.
Elapsed: 00:00:00.01
SQL> declare
2 XMLSCHEMA XMLTYPE := XMLTYPE(bfilename('XMLDIR','tadig_gen_2.2.xsd'),NLS_
CHARSET_ID('AL32UTF8'));
3 begin
4 :SCHEMAURL:= 'tadig-gen-2.2.xsd';
5 xdb_annotate_schema.disableDefaultTables(XMLSCHEMA);
6 dbms_xmlschema.registerSchema
7 (
8 schemaurl => :SCHEMAURL,
9 schemadoc => XMLSCHEMA,
10 local => TRUE,
11 genTypes => TRUE,
12 genBean => FALSE,
13 genTables => TRUE
14 );
15 end;
16 /
PL/SQL procedure successfully completed.
Elapsed: 00:00:01.17
SQL> declare
2 XMLSCHEMA XMLTYPE := XMLTYPE(bfilename('XMLDIR','tadig_rtdr.xsd'),NLS_CHA
RSET_ID('AL32UTF8'));
3 begin
4 :SCHEMAURL:= 'tadig_rtdr.xsd';
5 xdb_annotate_schema.addDefaultTable(XMLSCHEMA,'RTDR','RTDR_TABLE');
6 xdb_annotate_schema.disableDefaultTables(XMLSCHEMA);
7 dbms_xmlschema.registerSchema
8 (
9 schemaurl => :SCHEMAURL,
10 schemadoc => XMLSCHEMA,
11 local => TRUE,
12 genTypes => TRUE,
13 genBean => FALSE,
14 genTables => TRUE
15 );
16 end;
17 /
PL/SQL procedure successfully completed.
Elapsed: 00:00:05.66
SQL> select table_name
2 from USER_XML_TABLES
3 /
TABLE_NAME
RTDR_TABLE
Elapsed: 00:00:00.04
SQL> select count(*)
2 from USER_NESTED_TABLES
3 /
COUNT(*)
17
Elapsed: 00:00:00.43
SQL> desc RTDR_TABLE
Name Null? Type
TABLE of SYS.XMLTYPE(XMLSchema "tadig_rtdr.xsd" Element "RTDR") STORAGE Object-r
elational TYPE "RTDR8050_T"
SQL> --
SQL> insert into RTDR_TABLE values (XMLTYPE(bfilename('XMLDIR','MRTDREDSCHNXTMPU
KRAS00001.xml'),NLS_CHARSET_ID('AL32UTF8')))
2 /
1 row created.
Elapsed: 00:00:16.91
SQL> commit
2 /
Commit complete.
Elapsed: 00:00:00.01
SQL> set autotrace on explain lines 256 long 100000 pages 0
SQL> --
SQL> SELECT rtd3."VPMN"
2 ,rtd2."Recipient"
3 ,rtd2."ReportSeqNo"
4 FROM RTDR_TABLE r
5 ,XMLTABLE
6 (
7 xmlnamespaces
8 (
9 default 'https://infocentre.gsm.org/TADIG-RTDR'
10 ),
11 '/RTDR'
12 PASSING r.object_value
13 COLUMNS
14 "ConnectionXML" XMLTYPE PATH 'ConnectionList/Connection'
15 ,"Recipient" VARCHAR2(5) PATH 'RTDRFileHeader/Recipient'
16 ,"ReportSeqNo" INTEGER PATH 'RTDRFileHeader/ReportSeqNo'
17 ) rtd2
18 ,XMLTABLE
19 (
20 xmlnamespaces
21 (
22 default 'https://infocentre.gsm.org/TADIG-RTDR'
23 ),
24 '/Connection'
25 PASSING rtd2."ConnectionXML"
26 COLUMNS
27 "VPMN" VARCHAR2(6) PATH 'VPMN'
28 ) rtd3
29 /
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641 rows selected.
Elapsed: 00:00:01.15
Execution Plan
Plan hash value: 3612307998
| Id | Operation | Name | Rows | Bytes | Co
st (%CPU)| Time |
| 0 | SELECT STATEMENT | | 641 | 2539K|
9 (12)| 00:00:01 |
|* 1 | HASH JOIN | | 641 | 2539K|
9 (12)| 00:00:01 |
|* 2 | TABLE ACCESS FULL| RTDR_TABLE | 1 | 2045 |
3 (0)| 00:00:01 |
| 3 | TABLE ACCESS FULL| SYS_NTeF0jsoIcQsOueVI+sFGk0g== | 641 | 1259K|
5 (0)| 00:00:01 |
Predicate Information (identified by operation id):
1 - access("SYS_ALIAS_0"."NESTED_TABLE_ID"="RTDR_TABLE"."SYS_NC0002300024$")
2 - filter(SYS_CHECKACL("ACLOID","OWNERID",xmltype('<privilege
xmlns="http://xmlns.oracle.com/xdb/acl.xsd" xmlns:xsi="http://www.
w3.org/2001/XMLSchema-insta
nce" xsi:schemaLocation="http://xmlns.oracle.com/xdb/acl.xsd
http://xmlns.oracle.com/xdb/acl.xsd DAV:http://xmlns.oracle.com/xd
b/dav.xsd"><read-properties
/><read-contents/></privilege>'))=1)
Note
- dynamic sampling used for this statement (level=2)
SQL> quit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64
bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
C:\xdb\customers\Mapeley> -
How to boost performance on XMLType column
Hello everyone,
I've a serious question on improving the performance of XMLType Column. In fact, I've created view on top on XMLType column and found out that the retreival time is quite unexceptal. Although I've applied indices on those element seems no help. One note is that the XMLType column is unstructured.. Does this could be the reason?
My question is that does the indices only apply to structured docs?
Appreciated your advice. Thanks.Please post the question on XML DB forum
-
Help on how to query 11g table with XMLType column
To all,
We have this table:
DESC MESSAGE
Name Null Type
MESSAGE_ID NOT NULL NUMBER(38)
REQUEST_UU_ID NOT NULL VARCHAR2(50)
MESSAGE_TYPE_CD NOT NULL CHAR(3 CHAR)
EMPLOYEE_NUM NOT NULL VARCHAR2(8)
SEQUENCE_NUM VARCHAR2(20)
REVERSAL_SEQUENCE_NUM VARCHAR2(20)
TRANSACTION_TS TIMESTAMP(6)
MESSAGE_CONTENT_TXT NOT NULL XMLTYPE()
CREATE_BY_NM NOT NULL VARCHAR2(50 CHAR)
CREATE_BY_TS NOT NULL TIMESTAMP(6)
LAST_UPDATE_BY_NM NOT NULL VARCHAR2(50 CHAR)
LAST_UPDATE_BY_TS NOT NULL TIMESTAMP(6)
Given we have multiple columns and one is XMLType how do I query to find rows in the db that match this XPath
Here is a fragment of XML that is held in MESSAGE_CONTENT_TXT XMLType column:
<?xml version="1.0" encoding="UTF-8"?>
<cfg-env:Envelope xmlns="http://www.co.com/schemas/CFX/" xmlns:cfg-env="http://www.co.com/schemas/cfg-env/" xmlns:cfg-hdr="http://www.co.com/schemas/cfg-hdr/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.co.com/schemas/cfg-env/" >
<cfg-env:Header>
<cfg-hdr:MessageHeader xmlns:cfg-hdr="http://www.co.com/schemas/cfg-hdr/" xmlns:cfg-env="http://www.co.com/schemas/cfg-env/" xmlns="http://www.co.com/schemas/CFX/">
<cfg-hdr:Service>
<cfg-hdr:ServiceName>process</cfg-hdr:ServiceName>
<cfg-hdr:MessageType>Request</cfg-hdr:MessageType>
<cfg-hdr:ServiceVersion>1</cfg-hdr:ServiceVersion>
</cfg-hdr:Service>
<cfg-hdr:From>
<cfg-hdr:PartyId>13-175-8724</cfg-hdr:PartyId>
<cfg-hdr:CostCenter>2009065</cfg-hdr:CostCenter>
<cfg-hdr:System>
<cfg-hdr:Application>[email protected]</cfg-hdr:Application>
<cfg-hdr:Version>1.0</cfg-hdr:Version>
<cfg-hdr:Channel>TLR</cfg-hdr:Channel>
</cfg-hdr:System>
<cfg-hdr:OrigReplyToQMgr>QMBKRD01</cfg-hdr:OrigReplyToQMgr>
<cfg-hdr:OrigReplyToQ>Q1</cfg-hdr:OrigReplyToQ>
</cfg-hdr:From>
<cfg-hdr:UserSession>
<cfg-hdr:SignonRole>User</cfg-hdr:SignonRole>
<cfg-hdr:LogonId>R099999</cfg-hdr:LogonId>
I'm trying to find rows in the database that are /Envelope/Header/MessageHeader/UserSession/LogonId/R099999.
Thanks for the assistance. I'm new to XML DB. I appreciate the help.
EricHi Eric,
You can use XMLExists, like this :
select *
from message t
where xmlexists(
'declare namespace env = "http://www.co.com/schemas/cfg-env/"; (: :)
declare namespace hdr = "http://www.co.com/schemas/cfg-hdr/"; (: :)
/env:Envelope/env:Header/hdr:MessageHeader/hdr:UserSession[hdr:LogonId=$id]'
passing t.message_content_txt
, 'R099999' as "id"
); -
To get list of materialized views/views using a column of a table
Hi,
I am removing sal column from table tab_emp;
i want to check whether any materialized view or view using this column by querying using data dictionary :-
if i use like condition against query column of all_mviews it is throwing error sicne it is long data type.
is there a way to search it without creating any function and use it in a query
Thanks,
Ajoystart with select * from dictionary where table_name like '%VIEW%'
to identify appropriate dictionary views.
Then read: Ask Tom &quot;Converting Longs to LOBS&quot; and Ask Tom &quot;Long to Varchar2 conversion.... &quot;
to be able to search LONG descriptions for column names.
For example:
create table check_table as
select owner,view_name,text_length,to_lob(text) text_lob from all_views
Column Name
Data Type
Nullable
Default
Primary Key
OWNER
VARCHAR2(30)
No
VIEW_NAME
VARCHAR2(30)
No
TEXT_LENGTH
NUMBER
Yes
TEXT_LOB
CLOB
Yes
select * from check_table where instr(upper(text_lob),'SAL') > 0
OWNER
VIEW_NAME
TEXT_LENGTH
TEXT_LOB
SYS
USER_ENCRYPTED_COLUMNS
147
select TABLE_NAME, COLUMN_NAME, ENCRYPTION_ALG,SALT, INTEGRITY_ALG from DBA_ENCRYPTED_COLUMNS where OWNER = SYS_CONTEXT('USERENV','CURRENT_USER')
Regards
Etbin -
Issues with using XMLType indexes against a table with XMLType column
I am attempting to use an XMLIndex with a Structured Component and not having too much luck. Not much data in metalink nor is the documentation very helpful:
http://download.oracle.com/docs/cd/E11882_01/appdev.112/e10492/xdb_indexing.htm#BCGHGIGC
The table DDL is as follows:
CREATE TABLE ECI_SCHEMA.REV_ITEM_EARN_DTL_VIRTUAL(
REV_ITEM_EARN_DTL_ID_NBR NUMBER(16,0) NOT NULL,
UNIQ_MSG_ID_NBR VARCHAR2(50) NOT NULL,
REV_ITEM_BILL_DTL_ID_NBR NUMBER(16,0),
PLAN_RACN_NBR NUMBER(10,0) NOT NULL,
INV_DTL_IMG SYS.XMLType NOT NULL,
NON_INV_DTL_IMG BLOB NOT NULL,
PART_KEY_CD GENERATED ALWAYS AS (MOD(PLAN_RACN_NBR,5)) VIRTUAL,
LAST_UPDT_TMSTP TIMESTAMP(6) NOT NULL,
INV_ID_NBR NUMBER(16,0),
ITEM_STATUS_CD VARCHAR2(1) DEFAULT 'A' NOT NULL
LOB (NON_INV_DTL_IMG) STORE AS NON_IDI_LOB (CHUNK 8192 PCTVERSION 10 CACHE)
TABLESPACE ECI_DATA
PARTITION BY RANGE (PART_KEY_CD)
PARTITION RIED_DAY0_PART
VALUES LESS THAN (1)
TABLESPACE ECI_DATA
PARTITION RIED_DAY1_PART
VALUES LESS THAN (2)
TABLESPACE ECI_DATA
PARTITION RIED_DAY2_PART
VALUES LESS THAN (3)
TABLESPACE ECI_DATA
PARTITION RIED_DAY3_PART
VALUES LESS THAN (4)
TABLESPACE ECI_DATA
PARTITION RIED_MAXVAL_PART
VALUES LESS THAN (MAXVALUE)
TABLESPACE ECI_DATA
XMLTYPE COLUMN "INV_DTL_IMG" STORE AS OBJECT RELATIONAL
XMLSCHEMA "someXdbDocument.xsd"
ELEMENT "revenueInvoice"
According to the documentation, I should be able to create a structured XMLIndex on the XMLType column with the following syntax:
SQL> create index eci_schema.rev_item_earn_dtl_virt_xmlix on eci_schema.rev_item_earn_dtl_virtual
2 (INV_DTL_IMG)
3 INDEXTYPE IS XDB.XMLIndex
4 parameters ('PATH TABLE RIED_PATH_TABLE')
5 local;
When I do this, I get the following error:
create index eci_schema.rev_item_earn_dtl_virt_xmlix on eci_schema.rev_item_earn_dtl_virtual
ERROR at line 1:
ORA-29958: fatal error occurred in the execution of ODCIINDEXCREATE routine
ORA-30959: The indexed column is not stored in CLOB.
What am I doing wrong? Based on the Oracle documentation, I was under the impression that 11.2 XMLIndex would work with Object Relational storage. Is this not the case?CREATE INDEX ECI_SCHEMA.REV_ITEM_EARN_DTL_IX7
ON ECI_SCHEMA.REV_ITEM_EARN_DTL
extractValue(inv_dtl_img, '/revenueInvoice/service/transportation/mstrTrkngNbr')
TABLESPACE ECI_REV_ITEM_EARN_DTL_IX7_ITS
LOGGING
PARALLEL(DEGREE 8 INSTANCES 1)
LOCAL
/Elements that occur at most once in each document can be indexed using extractValue(). Despite the fact that the index appears to be a functional index, when we create the index we automatically re-write the create index into a normal btree index on the column that contains the value for the element identified by the xpath.
Eg in the case of a functional index based on extractValue, defined on XMLType using Object relational storage, with an xpath that identifies a node that occurs at most once in each document is not a functional index, it's re-written into a plain old vanilla btree index. You can actually check this by looking in the system tables
Eg
SQL> connect system/oracle
Connected.
SQL> select table_name, index_name from all_indexes where owner = 'OE' and table_name = 'PURCHASEORDER';
TABLE_NAME INDEX_NAME
PURCHASEORDER LINEITEM_TABLE_MEMBERS
PURCHASEORDER ACTION_TABLE_MEMBERS
PURCHASEORDER SYS_C0011037
SQL> alter session set current_schema = OE
2 /
Session altered.
SQL> create unique index PO_REF_INDEX on PURCHASEORDER (extractValue(object_value,'/PurchaseOrder/Reference'));
Index created.
SQL> set lines 250
SQL> select index_name, index_type from all_indexes where owner = 'OE' and table_name = 'PURCHASEORDER';
INDEX_NAME INDEX_TYPE
PO_REF_INDEX NORMAL
LINEITEM_TABLE_MEMBERS NORMAL
ACTION_TABLE_MEMBERS NORMAL
SYS_C0011037 NORMAL
SQL> select * from dba_ind_expressions where table_name = 'PURCHASEORDER' and index_owner = 'OE'
2 /
no rows selectedFrom the above we can see that the index created on extractValue has been re-written in a plain old vanilla BTREE index, and there is no definition for it in dba_ind_expressions So assuming you were able to create the index and insert the data you should find that your index is not a functional index.
] -
How to rename element (node) names in an XMLType column?
I have a source table with a xml data stored in an XMLType column.
The xml contains elements/nodes identified by numbers. I need to replace the numbers with the appropriate names.
The plsql below does this, but has two issues:
i. It selects the data into a clob and does a text replace on the elements in a loop. This works, but is super slow for 3500+ xml rows (about 500 node pairs per row).
ii. Once the data has had the element numbers replaced with the names, it inserts the new xml (clob wrapped in xmltype function) into the table with the XMLType attribute.
The problem with the latter action is that it is failing due to nls client vs server settings, or so it appears from what I could dig up. The actual error message:
ORA-19202: Error occurred in XML processing
LPX-00242: invalid use of ampersand ('&') character (use &)
Error at line 3
There are come entities in the original xml like "" (the degree symbol).
My question is two-fold:
a). Can I replace the element names without straying from the xmltype datatype? If so, how?
b). If I cannot do "a.)", then what must I do ensure that the clob gets converted correctly to xmltype and inserted into the table?
SQL> select <some rows> from nls_database_parameters ;
PARAMETER VALUE
NLS_LANGUAGE AMERICAN
NLS_TERRITORY AMERICA
NLS_CHARACTERSET WE8ISO8859P1
NLS_NCHAR_CHARACTERSET AL16UTF16
NLS_RDBMS_VERSION 10.2.0.1.0
SQL> SELECT * FROM NLS_SESSION_PARAMETERS;
PARAMETER VALUE
NLS_LANGUAGE AMERICAN
NLS_TERRITORY AMERICA
----code below-----
(note, this is a stripped down version of the original, so there may be typos)
declare
l_xmlclob CLOB;
l_newxml XMLType;
v_record_uid NUMBER(20);
CURSOR my_cur IS
select a.elementname,b.tagname
from t_elements a, t_tags b
where (a.element_uid = b.element_uid)
begin
select br.xml_data.getClobVal() xml_data into l_xmlclob from t_elements;
FOR my_rec IN my_cur LOOP
l_xmlclob := replace(l_xmlclob,my_cur.elementname,my_cur.maptag_name);
END LOOP;
l_newxml := XMLType(l_xmlclob);
insert into test_translated_xml (xml_data) values (l_newxml);
end;
(hopefully I haven't missed anything)
Any tips or hints would be much appreciated.
Thanks!Hello again,
Take a look at html entity codes: http://www.w3schools.com/tags/ref_entities.asp.
You can use this:
insert into t values (xmltype('<test>'||dbms_xmlgen.convert('this is a test &')||'deg;</test>'));
or
insert into t values (xmltype('<test>'||dbms_xmlgen.convert('this is a test &')||'#176;</test>'));
see this: ° (& deg;) or this: ° (& #176;)
SQL*Plus will not display degree character. But this is valid enitity code, and when you generate HTML out of this, it should be displayed properly in web browser.
HTML is in fact XML, that is validated by specific DTD (Document Type Definition).
Paweł
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