Very simple XML question

Question

1. I have a simple table with a clob to store an unlimited number of contacts as follows ....
CREATE TABLE MY_CONTACT (USER_id NUMBER, All_Contacts SYS.XMLTYPE );
2. I inserted 1 user with 2 contacts as follows :
INSERT INTO MY_CONTACT
VALUES(1, sys.XMLType.createXML('<?xml version="1.0"?>
<CONTACT>
<CONTACTID ID="1">
<FNAME>John</FNAME>
<MI>J</MI>
<LNAME>Doe</LNAME>
<RELATIONSHIP> </RELATIONSHIP>
<ADDRESS>
<STREET>1033, Main Street</STREET>
<CITY>Boston</CITY>
<STATE>MA</STATE>
<ZIPCODE>02118</ZIPCODE>
</ADDRESS>
</CONTACTID>
<CONTACTID ID="2">
<FNAME>Carl</FNAME>
<MI>J</MI>
<LNAME>Davis</LNAME>
<RELATIONSHIP>Son</RELATIONSHIP>
<ADDRESS>
<STREET>1033, Main Street</STREET>
<CITY>San Francisco</CITY>
<STATE>CA</STATE>
<ZIPCODE>06456</ZIPCODE>
</ADDRESS>
</CONTACTID>
</CONTACT>'));
--- 1 row inserted .
I have the the following issues :
3. When I run the following :
select A.All_Contacts.extract('/CONTACT/CONTACTID/@ID').getnumberval() ID,
A.All_Contacts.extract('/CONTACT/CONTACTID/FNAME/text()').getstringval() FNAME,
A.All_Contacts.extract('/CONTACT/CONTACTID/LNAME/text()').getstringval() LNAME
from MY_CONTACT A ;
I was hoping this query would return :
ID FNAME
1 John
2 Carl
But instead, I am getting : .... How do I fix the query to get the results I am looking for ( above) ?
ID FNAME
12 JohnCarl
4. I have another query :
select A.All_Contacts.extract('/CONTACT/CONTACTID/@ID').getnumberval() ID,
A.All_Contacts.extract('/CONTACT/CONTACTID/FNAME/text()').getstringval() FNAME,
A.All_Contacts.extract('/CONTACT/CONTACTID/LNAME/text()').getstringval() LNAME
from MY_CONTACT A
where
A.All_Contacts.extract('/CONTACT/CONTACTID/@ID').getstringval() = 1;
that returns no rows at all !!!
How do I get the query to return only the first set of values for CONTACTID ID=1 ? :
ID FNAME
1 John
I hope this is easy to fix - my aim is to store up to ten contacts in the clob, but I cant't even get it to work with just 2 contacts ...
Any help would be greatly appreciated.
Thanks !!!

Answer 1

If you are on 10g (I think at least 10.2.x.x) or greater, then you can also use the following. I prefer XMLTable over the table(xmlsequence()) structure.
SELECT cid, fname, lname
  FROM MY_CONTACT A,
       XMLTABLE('CONTACT/CONTACTID'
                PASSING A.All_contacts
                COLUMNS
                cid    NUMBER PATH '@ID',
                fname  VARCHAR2(20) PATH 'FNAME',
                lname  VARCHAR2(20) PATH 'LNAME')
WHERE cid = 1;