Använd XMLTABLE
:
SELECT x.serviceNumber
FROM your_table t
CROSS JOIN
XMLTABLE(
XMLNAMESPACE( 'http://www.yourserver.url/json/' AS "json" ),
'//root/Input/Body/json:object/json:array/json:object/'
PASSING XMLTYPE(
'<?xml version="1.0" encoding="utf-8"?>' ||
'<root xmlns:json="http://www.yourserver.url/json/">' ||
t.your_xml_column ||
'</root>'
)
COLUMNS serviceNumber NUMBER PATH './json:string[@name="serviceNumber"]'
) x