Dear Vimal, Please try with this query SELECT biblio.biblionumber, biblio.author, biblio.title, biblioitems.editionstatement, biblioitems.publishercode, SUBSTRING(biblioitems.marcxml, LOCATE('<subfield code="a">', biblioitems.marcxml, LOCATE('<datafield tag="650"', biblioitems.marcxml)+19), LOCATE('</subfield>', biblioitems.marcxml, LOCATE('<subfield code="a">', biblioitems.marcxml, LOCATE('<datafield tag="650"', biblioitems.marcxml)+19)) - LOCATE('<subfield code="a">', biblioitems.marcxml, LOCATE('<datafield tag="650"', biblioitems.marcxml)+19)) AS keywordl FROM biblioitems, biblio Dr. Shivendra Singh Assistant Librarian Guru Gobind Singh Medical College Baba Farid University of Health Sciences Faridkot -151203, Punjab https://www.researchgate.net/profile/Shivendra_Singh3/contributions On 9 August 2017 at 10:36, Vimal Kumar V. <vimal0212@gmail.com> wrote:
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 _______________________________________________ Koha mailing list http://koha-community.org Koha@lists.katipo.co.nz https://lists.katipo.co.nz/mailman/listinfo/koha
-- Shivendra 9815526163