Dear Friends, I am trying to generate a book list with keywords from 650$a using the following SQL query, SELECT ExtractValue( metadata, '//datafield[@tag="650"]/subfield[@code="a"]' ) AS Keyword, items.barcode, items.dateaccessioned, items.itemcallnumber, biblio.author, biblio.title, biblioitems.pages, biblioitems.publishercode, biblioitems.place, biblio.copyrightdate FROM items LEFT JOIN biblioitems ON (items.biblioitemnumber=biblioitems.biblioitemnumber) LEFT JOIN biblio ON (biblioitems.biblionumber=biblio.biblionumber) ORDER BY LPAD(items.barcode,40,' ') ASC After running the report, I got the following error message, The database returned the following error: Unknown column 'metadata' in 'field list' Please check the log for further details. Please review the SQL query and help me to solve the problem. Regards, -- Vimal Kumar V. Librarian School of Indian Legal Thought Mahatma Gandhi University Kottayam, Kerala Web: http://www.vimalkumar.info Blogs: http://linuxhalwa.blogspot.com http://kohageek.blogspot.in http://dspacegeek.blogspot.in http://moovandan.blogspot.in <http://moovandan.blogspot.in> --------------------------------------------------------------------------- "I forget what I was taught. I only remember what I have learnt" -Patrick White