XQuery dynamic type mismatch

Question

Hi all, I am new to xmldb and XQuery. Having trouble with relational xmltable quering... Any help is appriciated.
I want the following output
id info loc
4 stuff2 1
5 stuff3 1
6 stuff1 1
7 stuff4 2
etc....
The problem if feel is loc does not have a relation to transaction in the data. But I get an error "XQuery dynamic type mismatch"....
I have created a basic example below:
SELECT a.*
FROM "testTable",
XMLTABLE('/root/org/transaction'
PASSING testTable.column
COLUMNS
id varchar2(2) PATH '@id',
info varchar2(50) PATH '/info',
loc varchar2(2) PATH '@loc'
) a
<root>
<org loc="1">
<Transaction id="4"><info>stuff2</info></Transaction>
<Transaction id="5"><info>stuff3</info></Transaction>
<Transaction id="6"><info>stuff1</info></Transaction>
</org>
<org loc="2">
<Transaction id="7"><info>stuff4</info></Transaction>
<Transaction id="8"><info>stuff5</info></Transaction>
</org>
<org loc="3">
<Transaction id="9"><info>stuff6</info></Transaction>
<Transaction id="10"><info>stuff7</info></Transaction>
</org>
</root>
Thanks again for any help.
Edited by: user8820504 on Jan 14, 2010 2:27 PM

Answer 1

You need two distinct tables, one that maps Transactions and one that maps Orgs. Then join them on id. Something like this:
SQL> with testTable as (
  2  select xmltype('<root>
  3  <org loc="1">
  4  <Transaction id="4"><info>stuff2</info></Transaction>
  5  <Transaction id="5"><info>stuff3</info></Transaction>
  6  <Transaction id="6"><info>stuff1</info></Transaction>
  7  </org>
  8  <org loc="2">
  9  <Transaction id="7"><info>stuff4</info></Transaction>
10  <Transaction id="8"><info>stuff5</info></Transaction>
11  </org>
12  <org loc="3">
13  <Transaction id="9"><info>stuff6</info></Transaction>
14  <Transaction id="10"><info>stuff7</info></Transaction>
15  </org>
16  </root>') doc
17  from dual)
18  SELECT id, info, loc
19  FROM testTable,
20       XMLTABLE('/root/org/Transaction'
21       PASSING testTable.doc
22       COLUMNS
23       id varchar2(2) PATH '@id',
24       info varchar2(50) PATH 'info',
25       tr xmltype PATH '.'
26        ) trans ,
27       XMLTABLE('/root/org'
28       PASSING testTable.doc
29       COLUMNS
30       loc varchar2(2) PATH '@loc',
31       trs xmltype PATH 'Transaction'
32        ) orgs
33  where extractValue(orgs.trs,'/Transaction[@id="'||id||'"]/@id') is not null ;
ID INFO                                               LO
4  stuff2                                             1
5  stuff3                                             1
6  stuff1                                             1
7  stuff4                                             2
8  stuff5                                             2
9  stuff6                                             3
10 stuff7                                             3
Selezionate 7 righe.Max
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