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troubleshooting Question

Oracle XMLQuery won't work with registered Schema

Avatar of scottvandenberg
scottvandenberg asked on
Oracle DatabaseXML
5 Comments1 Solution986 ViewsLast Modified:
Oracle's XMLQuery works fine when the XMLType field is NOT constrained to conform to an XML Schema but does not return any results when the XMLType field IS constrained to conform to an XML Schema.  For instance, in the following the final query incorrectly returns nothing:

CREATE TABLE Agents (id NUMBER, clients XMLType)
    XMLType COLUMN clients  
    XMLSCHEMA "customerListSchema"  
    ELEMENT "customerList";  

    XMLTYPE (bfilename ('HOME', 'myCustomers.xml'),

SELECT XMLQuery ('for $i in //Address
           return $i/Street'
           PASSING A.Clients RETURNING CONTENT) AS StreetInfo
        FROM Agents A;

The data in "myCustomers.xml" is fine; it gets validated and inserted; it shows up fine when I do a "select * from agents".

However, doing the exact same thing but without constraining the schema, works fine, as follows:

CREATE TABLE Agents2 (id NUMBER, clients XMLType);

    XMLTYPE (bfilename ('HOME', 'myCustomers.xml'),

SELECT XMLQuery ('for $i in //Address
           return $i/Street'
           PASSING A.Clients RETURNING CONTENT) AS StreetInfo
        FROM Agents2 A;

Any ideas on what I might be missing or doing wrong?  Thank you very much for your help.  I'm happy to provide the ".xsd" and ".xml" files if necessary, but they don't seem to be the problem,