Passing XML in CLOB and processing data from CLOB

Question

Hi All,
I am facing problem when trying to access xml data from CLOB.
My stored procedure is as below:
CREATE OR REPLACE PROCEDURE usp_XMLTEST2
in_XmlDoc IN CLOB
IS
BEGIN
UPDATE XML_TEST
SET SETFLAG='N'
WHERE (ITEMCODE,WAREHOUSE) IN
SELECT
TO_NUMBER(EXTRACT(COLUMN_VALUE,'//Entry/@ItemCode')) ,
TO_NUMBER(EXTRACT(COLUMN_VALUE,'//Entry/@Warehouse'))
FROM TABLE(XMLSEQUENCE( EXTRACT(XMLTYPE(in_XmlDoc), '//List/*' )))
END usp_XMLTEST2;
Exec usp_XMLTEST2('<List Daemon="2"><Entry ItemCode="112333" Warehouse="4101" /><Entry ItemCode="112333" Warehouse="4103" /></List>');
It gives error:
ERROR at line 1:
ORA-22905: cannot access rows from a non-nested table item
ORA-06512: at "PUBLIX.USP_XMLTEST2", line 8
ORA-06512: at line 1
Please devise solution to this problem.
Regards
Nitin Bajaj

Answer 1

Try casting it:
SELECT TO_NUMBER(EXTRACT(COLUMN_VALUE,'//Entry/@ItemCode'))
TO_NUMBER(EXTRACT(COLUMN_VALUE,'//Entry/@Warehouse'))
FROM TABLE(cast( XMLSEQUENCE( EXTRACT(XMLTYPE(in_XmlDoc), '//List/*' )) as XMLSequenceType ) )
Anton