Oracle XML: Ignorar Nó inexistente
Eu tenho um problema prosseguir dados xml para inserir na tabela oracle, aqui está o meu xml:
<begin>
<entry>
<lastname>gordon</lastname>
<NumberList>
<number>100</number>
<codelist>
<code>213</code>
<codelist>
<NumberList>
<address>
<addresslist>Jl. jalan pelan-pelan ke Bekasi, Indonesia</addresslist>
</address>
</entry>
<entry>
<lastname>mark</lastname>
<address>
<addresslist>Jl. jalan cepet-cepet ke Jakarta, Indonesia</addresslist>
</address>
</entry>
</begin>
O resultado que eu esperava é:
LastName | Number | code | address
gordon | 100 | 213 |Jl. jalan pelan-pelan ke Bekasi, Indonesia
mark | Null | Null |Jl. jalan cepet-cepet ke Jakarta, Indonesia
Ao acessar o nó não existir, os dados de 1 linha não aparecerão (como os dados da segunda linha).
Atualização: aqui está meu código atual
DECLARE
X XMLTYPE := XMLTYPE('
<begin>
<entry>
<lastname>gordon</lastname>
<NumberList>
<number>100</number>
<codelist>
<code>213</code>
</codelist>
</NumberList>
<address>
<addresslist>Jl. jalan pelan-pelan ke Bekasi, Indonesia</addresslist>
</address>
</entry>
<entry>
<lastname>mark</lastname>
<address>
<addresslist>Jl. jalan cepet-cepet ke Jakarta, Indonesia</addresslist>
</address>
</entry>
</begin>');
BEGIN
FOR R IN (SELECT EXTRACTVALUE(VALUE(P), '/entry/lastname/text()') AS lastname,
EXTRACTVALUE(VALUE(P), '/entry/address/addresslist/text()') AS address,
EXTRACT(VALUE(P), '/entry/NumberList') AS NumberList
FROM TABLE(XMLSEQUENCE(EXTRACT(X, '//begin/entry'))) P)
LOOP
FOR R1 IN (SELECT EXTRACTVALUE(VALUE(T1), 'NumberList/number/text()') AS numbers,
EXTRACTVALUE(VALUE(T1), 'NumberList/codelist/code/text()') AS code
FROM TABLE(XMLSEQUENCE(EXTRACT(R.NumberList, '/NumberList'))) T1)
LOOP
DBMS_OUTPUT.PUT_LINE(r.lastname||' | '||R1.numbers||' | '||R1.code||' | '||r.address);
END LOOP;
END LOOP;
END;