Handling duplicate element names

Question

Hi,
I have been stuck with duplicate element name in my XML. Below is the skeleton of it...
<Admin>
<Information>
<Company>
<CompanyName>Apple</CompanyName>
<CompanyCode>APP</CompanyCode>
</Company>
<TNumber>1-1-123456</TNumber>
<RefrenceNumber>DA1101</RefrenceNumber>
</Information>
<Lists>
<ListItem>
<PolicyNumber>A100</PolicyNumber>
<ListType OWNER="true" HOLDER="true">
<CoverageValue>100</CoverageValue>
</ListItem>
<ListItem>
<PolicyNumber>A200</PolicyNumber>
<ListType OWNER="false" HOLDER="false">
<CoverageValue>200</CoverageValue>
</ListItem>
<ListItem>
<PolicyNumber>A300</PolicyNumber>
<ListType OWNER="true" HOLDER="true">
<CoverageValue>300</CoverageValue>
</ListItem>
</Lists>
</Admin>
The final Output list of Columns I will need are TNumber, ListTypeOwner,ListTypeHolder,CoverageValue
I loaded few XMLs into my XMLType table XML_SAMPLE
Below is the query i use... But every time I try i get no records. I do a sample query without reading the Tnumber I am able to read the values for the 2 XMLs. But when I do a extract for TNumber and the elements inside the ListItem I am not getting back anything.
Below is my query
select m.TNumber,l.ListTypeHolder,l.ListTypeOwner,l.CoverageValue
from XML_SAMPLE,
xmltable(
xmlnamespaces(DEFAULT 'http://www.xxx.com/Pway/Workfile')
'$XS/Admin' passing object_value as "XS"
columns
TNumber VARCHAR2(255) PATH '/Admin/Information/TNumber',
Item_Fragment XMLTYPE PATH 'Lists/ListItem'
) m,
xmltable(
xmlnamespaces(DEFAULT 'http://www.xxx.com/Pway/Workfile')
'$LI/ListItem' passing m.Item_Fragment as "LI"
columns
ListTypeHolder VARCHAR(255) PATH 'ListType/@HOLDER',
ListTypeOwner VARCHAR(255) PATH 'ListType/@OWNER',
CoverageValue VARCHAR(255) PATH 'CoverageValue'
) l
where l.ListTypeOwner="false";
I know its something to do the way the root tag or something. But i have tried out my options Please correct where I am making a mistake

Answer 1

Works for me, after correcting a few sytntax errors and wellformedness issue :
SQL> select m.TNumber,l.ListTypeHolder,l.ListTypeOwner,l.CoverageValue
  2  from XML_SAMPLE
  3     , xmltable(
  4         xmlnamespaces(DEFAULT 'http://www.xxx.com/Pway/Workfile')
  5       , '$XS/Admin' passing object_value as "XS"
  6         columns
  7           TNumber VARCHAR2(255) PATH 'Information/TNumber',
  8           Item_Fragment XMLTYPE PATH 'Lists/ListItem'
  9       ) m
10     , xmltable(
11         xmlnamespaces(DEFAULT 'http://www.xxx.com/Pway/Workfile')
12       , '$LI/ListItem' passing m.Item_Fragment as "LI"
13         columns
14           ListTypeHolder VARCHAR(255) PATH 'ListType/@HOLDER',
15           ListTypeOwner VARCHAR(255) PATH 'ListType/@OWNER',
16           CoverageValue VARCHAR(255) PATH 'CoverageValue'
17       ) l
18  --where l.ListTypeOwner = 'false'
19  ;
TNUMBER            LISTTYPEHOLDER     LISTTYPEOWNER    COVERAGEVALUE
1-1-123456         true               true             100
1-1-123456         false              false            200
1-1-123456         true               true             300
(tested on 11.2.0.3)