Or like this, which might (or might not!) be more efficient since it only resorts to ExtractValue if the author is NULL: SELECT IF(b.author IS NULL, ExtractValue(m.metadata, '//datafield[@tag="700"]/subfield[@code="a"]'), b.author ) FROM biblio b INNER JOIN biblio_metadata m USING (biblionumber); Paul. On Thu, Oct 04, 2018 at 09:36:08AM -0400, Caroline Cyr-La-Rose wrote:
Hi Hans,
I'm no SQL expert either, but I usually use CONCAT_WS to have the 100 and 700 authors appear in the same column.
Also, check your mappings in Administration > Koha to MARC mapping. You may be able to use biblio.author instead of ExtractValue for the 100 field.
So something like
SELECT CONCAT_WS(biblio.author, ExtractValue(metadata, '//datafield[@tag="700"]/subfield[@code="a"]')) FROM biblio_metadata JOIN biblio USING (biblionumber)
(metadata is used instead of marcxml in more recent versions of Koha)
Good luck!
Caroline
Caroline Cyr La Rose, M.S.I. Bibl. prof. / Chargée de la formation et du soutien
Tél. : 1 (833) 465-4276 caroline.cyr-la-rose@inLibro.com <mailto:caroline.cyr-la-rose@inLibro.com>
inLibro | pour esprit libre | www.inLibro.com <http://www.inLibro.com> Le 2018-10-04 à 04:53, Hans Manrique a écrit :
Hello everyone,
I would like to have a report of only fields 100 and 700 in a single column. I'm a student and I do not understand much about sql, but I've managed to get a 100 report through ExtractValue syntax queries (marcxml, xpath). But I do not know how to get one of the fields 100, 700 in a single report and in a column. Is that possible?
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