Hello Vimar,

you need to join the table biblio_metadata to your query

Best

Josef

st 9. 8. 2017 v 7:06 odesílatel Vimal Kumar V. <vimal0...@gmail.com> napsal:

> 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
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