Dynamic XQuery type mismatch

I have the following. How to avoid the dynamic type mismatch?

< ResGuests >

< ResGuest >

profile of <>

< ProfileInfo >

< Type UniqueID = "21" ID = "3558" / >

< profile >

< TPA_Extensions >

< TPA_Extension >

< DRI_INFO MemberLevel = GuestType "s/o" = "GST" / > "

< / TPA_Extension >

< / TPA_Extensions >

< customer >

< PersonName >

< name > Ws < / name >

D. JAMES < GivenName > < / GivenName >

< / PersonName >

< / customer >

< / profile >

< / ProfileInfo >

< ProfileInfo >

< Type UniqueID = "21" ID = "3568" / >

< profile >

< TPA_Extensions >

< TPA_Extension >

< DRI_INFO MemberLevel = GuestType "s/o" = "Assistant Director General" / > "

< / TPA_Extension >

< / TPA_Extensions >

< customer >

< PersonName >

< name > M < / name >

< GivenName > GUY < / GivenName >

< / PersonName >

< / customer >

< / profile >

< / ProfileInfo >

< / profile >

< / ResGuest >

< / ResGuests >

SELECT lengthofstay

boarding

resvtype

devices

membertype

IN n_lengthofstay

n_amount_to_charge

v_resvtype

n_num_devices

v_member_type

FROM XMLTABLE)

xmlnamespaces (DEFAULT 'http://www.opentravel.org/OTA/2003/05'), ' / OTA_ResRetrieveRS'

PASSAGE mxml

COLUMNS lengthofstay VARCHAR2 (2000)

Path "ReservationsList/HotelReservation/Services/Service/TPA_Extensions/TPA_Extension/WiFiFees/@LengthOfStay".

TOLL number

Path "ReservationsList/HotelReservation/Services/Service/TPA_Extensions/TPA_Extension/WiFiFees/@AmountBeforeTax".

, resvtype VARCHAR2 (2000)

Path "ReservationsList/HotelReservation/RoomStays/RoomStay/RoomRates/RoomRate/@BookingCode".

Number of devices

Path "ReservationsList/HotelReservation/Services/Service/TPA_Extensions/TPA_Extension/WiFiFees/@NumberConnections".

, membertype VARCHAR2 (2000)

Path "ReservationsList/HotelReservation/ResGuests/ResGuest/Profiles/ProfileInfo/Profile/TPA_Extensions/TPA_Extension/DRI_INFO/@MemberLevel");

I would be able to extract the data in a given table?

This is not really to the point.

First, you must decide how to deal with the various nodes of type of repetition, we could meet in the XML file.

If you want extract as a single flat tabular structure or rather as separate entity sets?

If flattening is OK, then something like this will not work on your current sample XML:

DECLARE
    x_xml          CLOB
        := '

   
   
      
   
   
      
         
         
            
               
                  
                     
                  
               
            
         
         
            
               
                  
                     
                     
                        
                           
                              
                           
                        
                        
                           
                              Winters
                              JAMES D.
                           
                        
                     
                  
                  
                     
                     
                        
                           
                              
                           
                        
                        
                           
                              M
                              GUY
                           
                        
                     
                  
               
            
         
         
            
               
               
                  
                     
                        
                     
                  
               
               
            
         
      
   
';
    mxml           XMLTYPE;

    TYPE data_rec IS RECORD
    (
        lengthofstay   NUMBER
       ,chargeable     NUMBER
       ,resvtype       VARCHAR2 (2000)
       ,devices        NUMBER
       ,membertype     VARCHAR2 (2000)
       ,guesttype      VARCHAR2 (2000)
    );

    TYPE results IS TABLE OF data_rec;

    a_results      results;

BEGIN
    mxml        := xmltype (x_xml);

    SELECT x1.lengthofstay
         , x1.chargeable
         , x1.resvtype
         , x1.devices
         , x2.membertype
         , x2.guesttype
    BULK COLLECT INTO a_results
    FROM XMLTABLE (
           XMLNamespaces (DEFAULT 'http://www.opentravel.org/OTA/2003/05')
         , '/OTA_ResRetrieveRS/ReservationsList/HotelReservation'
           PASSING mxml
           COLUMNS lengthofstay VARCHAR2(2000)  PATH 'Services/Service/TPA_Extensions/TPA_Extension/WiFiFees/@LengthOfStay'
                 , chargeable   NUMBER          PATH 'Services/Service/TPA_Extensions/TPA_Extension/WiFiFees/@AmountBeforeTax'
                 , resvtype     VARCHAR2(2000)  PATH 'RoomStays/RoomStay/RoomRates/RoomRate/@BookingCode'
                 , devices      NUMBER          PATH 'Services/Service/TPA_Extensions/TPA_Extension/WiFiFees/@NumberConnections'
                 , profiles     XMLType         PATH 'ResGuests/ResGuest/Profiles/ProfileInfo'
         ) x1
       , XMLTABLE (
           XMLNamespaces (DEFAULT 'http://www.opentravel.org/OTA/2003/05')
         , '/ProfileInfo/Profile/TPA_Extensions/TPA_Extension/DRI_INFO'
           PASSING x1.profiles
           COLUMNS memberType  VARCHAR2(2000)   PATH '@MemberLevel'
                 , guestType   VARCHAR2(2000)   PATH '@GuestType'
         ) x2 ;

    for i in 1 .. a_results.count loop
      DBMS_OUTPUT.put_line (   a_results(i).lengthofstay
                            || ' -->'
                            || a_results(i).chargeable
                            || ' -->'
                            || a_results(i).resvtype
                            || ' -->'
                            || a_results(i).devices
                            || ' -->'
                            || a_results(i).membertype
                            || ' -->'
                            || a_results(i).guesttype
                            );
    end loop;
END;
/

output:

5--> 0--> REN--> 4--> N / A--> GST

5--> 0--> REN--> 4--> N / A--> ADG

but as said, don't forget that it will fail as soon as there is more than one Service, ideal or RoomRate node.

Tags: Oracle Development

Similar Questions

  • ORA-19279: XPTY0004 - dynamic XQuery type mismatch: expected - singleton sequence got several sequence element

    Hello

    Can you please help me by questioning from the following XML code.

    under query works for the 1 iteration. but for several games I get following error.

    ORA-19279: XPTY0004 - dynamic XQuery type mismatch: expected - singleton sequence got several sequence element

    19279 00000 - "dynamic XQuery type mismatch: expected - singleton sequence got several sequence element.

    * Cause: The sequence of XQuery passed was more than one element.

    * Action: Fix the XQuery expression to return a single element of the sequence.

    Help, please

    Select X.*

    ABC evt

    , XMLTABLE (XMLNAMESPACES ('urn:swift:xsd:mtmsg.2011' AS NS2, DEFAULT 'urn:swift:xsd:fin.970.2011'),

    "$msg_xml" by PASSING EVT.col1 as 'msg_xml '.

    COLUMNS

    Path Varchar (40) F61ValueDate "/ F61/ValueDate [1]."

    Path of DebitCreditMark Varchar (40) "/ / Document/MT970/F61a/F61/DebitCreditMark [1]."

    Amount Varchar (40) path ' / / Document/MT970/F61a/F61/amount [1]. "

    Path of TransactionType Varchar (40) "/ / Document/MT970/F61a/F61/TransactionType [1]."

    Path of IdentificationCode Varchar (40) "/ / Document/MT970/F61a/F61/IdentificationCode [1]."

    Path of ReferenceForTheAccountOwner Varchar (40) "/ / Document/MT970/F61a/F61/ReferenceForTheAccountOwner [1]."

    Path of SupplementaryDetails Varchar (40) "/ / Document/MT970/F61a/F61/SupplementaryDetails [1].

    ) X

    where EVT.col2 = 2

    < FinMessage xmlns = "urn:swift:xsd:mtmsg.2011" xmlns:FinMessage ="urn:swift:xsd:mtmsg.2011" > "
    < Block1 >
    < ApplicationIdentifier > F < / ApplicationIdentifier >
    < ServiceIdentifier > 01 < / ServiceIdentifier >
    < LogicalTerminalAddress > IRVTDEFXAXXX < / LogicalTerminalAddress >
    < open > 5252 < / open >
    < SequenceNumber > 699163 < / SequenceNumber >
    < / Block1 >
    < Block2 >
    < OutputIdentifier > O < / OutputIdentifier >
    < > 970 MessageType < / MessageType >
    < > 1633 InputTime < / InputTime >
    < MessageInputReference >
    < date > 131101 < / Date >
    < LTIdentifier > EBASBEBBQ < / LTIdentifier >
    < BranchCode > XXX < / BranchCode >
    < open > 1113 < / open >
    < n > 070016 < / ISN >
    < / MessageInputReference >
    < date > 131101 < / Date >
    < time > 1634 < / Time >
    < MessagePriority > N < / MessagePriority >
    < / Block2 >
    < Block3 >
    ENS0000857017566 < F108 > < / F108 >
    < / Block3 >
    < canton4 >
    < xmlns = "urn:swift:xsd:fin.970.2011 document" xmlns:Document ="urn:swift:xsd:fin.970.2011" > "
    < MT970 >
    < F20a >
    ENS17566/END of < F20 > < / F20 >
    < / F20a >
    < F25a >
    < F25 > IRVTDEFX/EUR/131101/N < / F25 >
    < / F25a >
    < F28a >
    < F28C >
    < StatementNumber > 215 < / StatementNumber >
    < SequenceNumber > 16 < / SequenceNumber >
    < / F28C >
    < / F28a >
    < F60a >
    < F60M >
    < DCMark > D < / DCMark >
    < date > 131101 < / Date >
    < currency > EUR < / currency >
    < amount > 2686836,28 < / amount >
    < / F60M >
    < / F60a >
    < F61a >
    < F61 >
    < valueDate > 131101 < / ValueDate >
    < DebitCreditMark > D < / DebitCreditMark >
    < amount > 40248, < / amount >
    < TransactionType > S < / TransactionType >
    < IdentificationCode > 103 < / IdentificationCode >
    < ReferenceForTheAccountOwner > FX5445414 < / ReferenceForTheAccountOwner >
    < SupplementaryDetails > KREDBEBBXXXIRVTDEFXXXXN011031 < / SupplementaryDetails >
    < / F61 >
    < / F61a >
    < F61a >
    < F61 >
    < valueDate > 131101 < / ValueDate >
    < DebitCreditMark > D < / DebitCreditMark >
    < amount > 41605, < / amount >
    < TransactionType > S < / TransactionType >
    < IdentificationCode > 103 < / IdentificationCode >
    < ReferenceForTheAccountOwner > FX5443846 < / ReferenceForTheAccountOwner >
    < SupplementaryDetails > DEUTDEFFXXXIRVTDEFXXXXN011031 < / SupplementaryDetails >
    < / F61 >
    < / F61a >
    < F61a >
    < F61 >
    < valueDate > 131101 < / ValueDate >
    < DebitCreditMark > D < / DebitCreditMark >
    < amount > 43730, < / amount >
    < TransactionType > S < / TransactionType >
    < IdentificationCode > 103 < / IdentificationCode >
    < ReferenceForTheAccountOwner > C13110130526301 < / ReferenceForTheAccountOwner >
    < SupplementaryDetails > BARCGB22XXXIRVTDEFXXXXN011033 < / SupplementaryDetails >
    < / F61 >
    < / F61a >
    < F61 >
    < valueDate > 131101 < / ValueDate >
    < DebitCreditMark > D < / DebitCreditMark >
    < amount > 58000, < / amount >
    < TransactionType > S < / TransactionType >
    < IdentificationCode > 202 < / IdentificationCode >
    < ReferenceForTheAccountOwner > FXT1311010000500 < / ReferenceForTheAccountOwner >
    < ReferenceOfTheAccountServicingInstitution > FXT1311010000500 < / ReferenceOfTheAccountServicingInstitution >
    < SupplementaryDetails > BKAUATWWXXXIRVTDEFXXXXN011116 < / SupplementaryDetails >
    < / F61 >
    < / F61a >
    < F61a >
    < F61 >
    < valueDate > 131101 < / ValueDate >
    < DebitCreditMark > D < / DebitCreditMark >
    < amount > 59826,21 < / amount >
    < TransactionType > S < / TransactionType >
    < IdentificationCode > 103 < / IdentificationCode >
    < ReferenceForTheAccountOwner > FX5446070 < / ReferenceForTheAccountOwner >
    < SupplementaryDetails > CHASGB2LXXXIRVTDEFXXXXN011031 < / SupplementaryDetails >
    < / F61 >
    < / F61a >
    < F61a >
    < F61 >
    < valueDate > 131101 < / ValueDate >
    < DebitCreditMark > D < / DebitCreditMark >
    < amount > 60309,4 < / amount >
    < TransactionType > S < / TransactionType >
    < IdentificationCode > 103 < / IdentificationCode >
    < ReferenceForTheAccountOwner > 01987HS016415 < / ReferenceForTheAccountOwner >
    < SupplementaryDetails > EFGBGRAAXXXIRVTDEFXXXXN011458 < / SupplementaryDetails >
    < / F61 >
    < / F61a >
    < F62a >
    < F62M >
    < DCMark > D < / DCMark >
    < date > 131101 < / Date >
    < currency > EUR < / currency >
    < amount > 3736765,9 < / amount >
    < / F62M >
    < / F62a >
    < / MT970 >
    < / document >
    < / canton4 >
    < / FinMessage >

    Thank you

    Siva Prakash

    under query works for the 1 iteration. but for several games I get following error.

    When you want to present the groups repeating in relational format, you must extract the sequence of elements of the main XQuery expression.

    Each element is then spent the COLUMNS clause to be more shredded into columns.

    This should work as expected:

    Select x.*

    ABC t

    xmltable)

    XmlNamespaces)

    default 'urn:swift:xsd:fin.970.2011 '.

    , 'urn:swift:xsd:mtmsg.2011' as 'ns0 '.

    )

    , ' / ns0:FinMessage / ns0:Block4 / Document/MT970/F61a/F61 '

    in passing t.col1

    columns F61ValueDate Varchar (40) Path 'ValueDate '.

    , Path of the DebitCreditMark Varchar (40) "DebitCreditMark".

    , Varchar (40) path 'Amount' rise

    , Path TransactionType Varchar (40) "TransactionType".

    , Path of the IdentificationCode Varchar (40) "IdentificationCode".

    , Path of the ReferenceForTheAccountOwner Varchar (40) "ReferenceForTheAccountOwner".

    , Path of the SupplementaryDetails Varchar (40) "SupplementaryDetails".

    ) x ;

  • Dynamic XQuery Type mismatch (ORA-19279)

    Hello

    I'm "ORA-19279: XPTY0004 - dynamic XQuery type mismatch: expected - singleton sequence got several sequence element" error with the XML block below. Query works well when there is no repeating element XML block (address, income and phone). In addition, the query looks good from a performance perspective?

    with the trial as (select xmltype

    ("" < SampleRequest = xmlns:ns0 "http://abc.org/SampleRequest/one" xmlns ="http://abc.org/SampleRequest/one" > ")

    < ns0:Address >

    < ns0:AddressType >

    < CurrAdrInd xmlns = "" > Y < / CurrAdrInd >

    < OutOfAreaInd xmlns = "" > N < / OutOfAreaInd >

    < YearDur xmlns = "" > 15 < / YearDur >

    < MthDur xmlns = "" > 0 < / MthDur >

    < / ns0:AddressType >

    < AdrLine1 xmlns = "" > line 1 < / AdrLine1 >

    < AdrLine2 xmlns = "" > line 2 < / AdrLine2 >

    < AdrLine3 xmlns = "" > line 3 < / AdrLine3 >

    < Name xmlns = "" > city < / name >

    < PostCd xmlns = "" > 123456 < / PostCd >

    < / ns0:Address >

    < ns0:Address >

    < ns0:AddressType >

    < CurrAdrInd xmlns = "" > N < / CurrAdrInd >

    < OutOfAreaInd xmlns = "" > Y < / OutOfAreaInd >

    < YearDur xmlns = "" > 5 < / YearDur >

    < MthDur xmlns = "" > 0 < / MthDur >

    < / ns0:AddressType >

    < AdrLine1 xmlns = "" > line 1 < / AdrLine1 >

    < AdrLine2 xmlns = "" > line 2 < / AdrLine2 >

    < AdrLine3 xmlns = "" > line 3 < / AdrLine3 >

    < Name xmlns = "" > city < / name >

    < PostCd xmlns = "" > 987654 < / PostCd >

    < / ns0:Address >

    < ns0:Customer >

    < TitleCd xmlns = "" > Mr < / TitleCd >

    < FrstName xmlns = "" > customer 1 < / FrstName >

    < midName xmlns = "" / >

    < name xmlns = "" > LAST < / LastName >

    < BrthDt xmlns = "" > 1979-06-21 < / BrthDt >

    < / ns0:Customer >

    < ns0:Income >

    < IncmTypeCd xmlns = "" > gross < / IncmTypeCd >

    < IncmAmt xmlns = "" > 2700 < / IncmAmt >

    < / ns0:Income >

    < ns0:Income >

    < IncmTypeCd xmlns = "" > other < / IncmTypeCd >

    < IncmAmt xmlns = "" > 1500 < / IncmAmt >

    < / ns0:Income >

    < ns0:Telephone >

    < PhnNumTypeCd xmlns = "" > home < / PhnNumTypeCd >

    < PhnAreaCd xmlns = "" > 123 < / PhnAreaCd >

    < PhnNum xmlns = "" > 123467 < / PhnNum >

    < / ns0:Telephone >

    < ns0:Telephone >

    < PhnNumTypeCd xmlns = "" > work < / PhnNumTypeCd >

    < PhnAreaCd xmlns = "" > 987 < / PhnAreaCd >

    < PhnNum xmlns = "" > 9876543 < / PhnNum >

    < / ns0:Telephone >

    < / SampleRequest >

    clob_xml') of double)

    Select x.* from the test,

    XMLTable (xmlnamespaces ('http://abc.org/SampleRequest/one' as "ns0"),)

    ' for $i in /ns0:SampleRequest

    Return $i' from clob_xml

    columns

    path of varchar2 (10) ttl_cd ' / / ns0:Customer / TitleCd',

    path of varchar2 (32) frst_nm ' / / ns0:Customer / FrstName ",

    path of varchar2 (1) mid_nm ' / / ns0:Customer / MidName',

    "path of varchar2 (32) last_nm ' / / ns0:Customer / LastName."

    date path brth_dt ' / / ns0:Customer / BrthDt',

    path of varchar2 (1) curr_adr_ind ' / / ns0:Address / ns0:AddressType / CurrAdrInd',

    path of varchar2 (1) out_of_area_ind ' / / ns0:Address / ns0:AddressType / OutOfAreaInd',

    path number (3) tm_at_adr_year_dur ' / / ns0:Address / ns0:AddressType / YearDur',

    path number (2) tm_at_adr_mth_dur ' / / ns0:Address / ns0:AddressType / MthDur',

    path of varchar2 (32) flat_num ' / / ns0:Address / AdrLine1',

    path of varchar2 (32) hse_num ' / / ns0:Address / AdrLine2',

    path of varchar2 (32) hse_nm ' / / ns0:Address / AdrLine3',

    path of varchar2 (32) town_nm ' / / ns0:Address / name ',

    path of varchar2 (8) post_cd ' / / ns0:Address / PostCd',.

    path of varchar2 (1) incm_type_cd ' / / ns0:Income / IncmTypeCd',

    path number (10) incm_amt ' / / ns0:Income / IncmAmt',

    path of varchar2 (2) phn_num_type_cd ' / / ns0:Telephone / PhnNumTypeCd',

    path of varchar2 (5) phn_num_area_cd ' / / ns0:Telephone / PhnAreaCd',

    path of varchar2 (12) phn_num ' / / ns0:Telephone / PhnNum'

    ) x ;

    Kind regards

    Chandra KenR

    Thanks, that's much clearer this way.

    For example, to retrieve information related to income:

    SQL > select x.*

    tmp_xml 2 t

    3, xmltable)

    4 xmlnamespaces ('http://abc.org/SampleRequest/one' as "ns0")

    5, ' / ns0:SampleRequest'

    6 passage t.object_value

    7 columns

    8 path of varchar2 (10) ttl_cd ' ns0:Customer / TitleCd'

    "9 road to varchar2 (32) frst_nm ' ns0:Customer / FrstName"

    10 road of varchar2 (1) mid_nm ' ns0:Customer / MidName'

    "11 road of varchar2 (32) last_nm ' ns0:Customer / LastName"

    12, date of brth_dt path ' ns0:Customer / BrthDt'

    13, path number (10) grs_incm_amt ' ns0:Income [IncmTypeCd = "Raw"] / IncmAmt'

    14 road number (10) oth_incm_amt ' ns0:Income [IncmTypeCd = 'Other'] / IncmAmt'

    (15) x

    16;

    TTL_CD FRST_NM MID_NM LAST_NM BRTH_DT GRS_INCM_AMT OTH_INCM_AMT

    ---------- -------------------------------- ------ -------------------------------- ----------- ------------ ------------

    Mr. customer 1 LAST 21/06/1979 2700-1500

    On your question about performance:

    Yes, there are some general guidelines to follow to get the best performance of the execution of XQuery.

    Those are the storage dependent and independent storage, with greater importance of the former.

    For example, in the test case above, I first stored the XML in a binary table of XMLType (TMP_XML): it is an optimization of storage-dependent.

    I also removed all the descendants axis (/ /) for path expressions: those who were not needed and should be avoided if the exact location of the target node is known, this is typically an independent optimization of storage.

    You will find everything you need to know in details here:

    http://www.Oracle.com/technetwork/database-features/xmldb/overview/xmldb-bpwp-12cr1-1964809.PDF

  • ORA-19279: XPTY0004 - dynamic XQuery type mismatch

    Hi all
    When I run select it below the statement I had the "ORA-19279: XPTY0004 - dynamic XQuery type mismatch: expected - singleton sequence got several sequence element" oracle error.
    select valtag 
      from XMLTABLE( '/root'
                     passing XMLTYPE('<root>
                                                  <subroot><valtag>6666446612</valtag></subroot>
                                                  <subroot><valtag>6666446613</valtag></subroot>
                                      </root>'
                                     ) 
                    Columns
                          valtag varchar(20) path 'subroot/valtag'
                   ) s
    required result:
    VALTAG
    ---------------
    6666446612
    6666446613
    Please let me know where I made the mistake?

    Thank you
    RAM.

    Published by: Rama Krishna.CH on November 26, 2012 15:48

    Please let me know where I made the mistake?

    The main manifestation of XQuery (here = ' / root ') defines what will be the relational lines based on the result set.
    (Strictly speaking, this expression must return a sequence of elements)

    Here, so you want the element subroot be your 'line':

    SQL> select s.valtag
      2  from XMLTABLE( '/root/subroot'
      3         passing XMLTYPE('
      4             6666446612
      5             6666446613
      6           ')
      7         Columns
      8            valtag varchar(20) path 'valtag'
      9       ) s
     10  ;
    
    VALTAG
    --------------------
    6666446612
    6666446613
     
    
  • ORA-19279: XPTY0004 - dynamic XQuery type mismatch: expected singleton GL entry

    Hello
    My version of db: database Oracle 11 g Enterprise Edition Release 11.2.0.1.0 - 64 bit Production

    I run this code:
        SELECT *
        FROM XMLTABLE (
            '/rowset/row/businessgroups'
            PASSING XMLPARSE (DOCUMENT '<?xml version="1.0"?>
    <rowset>
    <row>
    <model>xt100</model>
    <businessgroups>
      <businessgroup>retail</businessgroup>
      <businessgroup>restaurant</businessgroup>
    </businessgroups>
    </row>
    </rowset>')
            COLUMNS businessgroup VARCHAR2(30) PATH 'businessgroup')
    
    error:
    ORA-19279: XPTY0004 - XQuery dynamic type mismatch: expected singleton sequence - got multi-item sequence
    The error is coming as I walked him several elements in the xml file.
    Is it possible to modify the code to get a list of the businessgroups, as below
    output:
    retail
    restaurant
    If I make a few changes in the code, I get the output as below, but I want as above:
    retailrestaurant
    Please advice.
    Connected to Oracle Database 11g Enterprise Edition Release 11.1.0.7.0
    Connected as apps
    
    SQL>
    SQL> SELECT *
      2      FROM XMLTABLE (
      3          '/rowset/row/businessgroups'
      4          PASSING XMLPARSE (DOCUMENT '
      5  
      6  
      7  xt100
      8  
      9    retail
     10    restaurant
     11  
     12  
     13  ')
     14          COLUMNS businessgroup VARCHAR2(30) PATH 'businessgroup')
     15  /
    
    SELECT *
        FROM XMLTABLE (
            '/rowset/row/businessgroups'
            PASSING XMLPARSE (DOCUMENT '
    
    
    xt100
    
      retail
      restaurant
    
    
    ')
            COLUMNS businessgroup VARCHAR2(30) PATH 'businessgroup')
    
    ORA-19279: XPTY0004 - XQuery dynamic type mismatch: expected singleton sequence - got multi-item sequence
    
    SQL>
    SQL>
    SQL> SELECT *
      2      FROM XMLTABLE (
      3          '/rowset/row/businessgroups/businessgroup'
      4          PASSING XMLPARSE (DOCUMENT '
      5  
      6  
      7  xt100
      8  
      9    retail
     10    restaurant
     11  
     12  
     13  ')
     14          COLUMNS businessgroup VARCHAR2(30) PATH '.')
     15  /
    
    BUSINESSGROUP
    ------------------------------
    retail
    restaurant
    
    SQL> 
    
  • ORA-19279: dynamic type mismatch query: wait for the singleton sequence

    Hello
    I have my xml stored in the table "xml_table".
    The content of the XML is:

    < COMPANY NAME = 'ABC' >
    Paris < DEPARTMENT_NAME > < / DEPARTMENT_NAME >
    < ADDRESS > Nevers Street < / ADDRESS >
    London < DEPARTMENT_NAME > < / DEPARTMENT_NAME >
    Northampton square < ADDRESS > < / ADDRESS >
    < / COMPANY >

    I would like to query the XML to get the result like this:

    COMPANY_NAME | DEPARTMENT_NAME | ADDRESS

    ABC | Paris | Street of nevers
    ABC | London | Northampton square

    However when I run the query:

    SELECT t.company_name, t.address, t.department_name
    Xml_table p,
    XMLTable ('/ COMPANY' ADOPTION p.OBJECT_VALUE)
    COLUMNS company_name PATH "@NAME."
    address PATH of VARCHAR2 (100) "/ COMPANY/ADDRESS.
    department_name PATH VARCHAR2 (100) "/ COMPANY/DEPARTMENT_NAME ') t

    I get the error message:
    ORA-19279: XPTY0004 - dynamic XQuery type mismatch: expected - singleton sequence got several sequence element

    What can be wrong with the query? Should Howe be modified to achieve the desired result?

    Thanks for the help

    Groxy

    Hello

    What can be wrong with the query?

    The XPath expression that you use to map DEPARTMENT_NAME and columns ADDRESS corresponds to a sequence of elements, not a single value.
    For example, "/ COMPANY/ADDRESS" means:

    Rue de nevers
    Northampton Square

    In fact, your XML structure is not very suitable for a relational presentation.
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