[Koha] 856 Field and SQL Query

[Ian Bays]

Hi Graham,

You are using ">=" in the subfield construct. If you want just the 
subfield u as URL you should just use "=".  Similarly in the other 
ExtractValue constructs.

All the best.
Ian

On 22/07/2020 08:20, Stephen Graham wrote:
> (sorry if you have received this twice, my email client crashed when I sent yesterday - and not sure if it actually sent)
>
> Hi All - when I try and pull out subfield $u of the 856 field I always get the public note as well (i.e. $z). An example of the query I'm running:
>
> select
>    biblionumber,
>    ExtractValue(metadata,'//datafield[@tag="245"]/subfield[@code>="a"]') AS title,
>    ExtractValue(metadata,'//datafield[@tag="856"]/subfield[@code>="u"]') as URL
> from
>    biblio_metadata
> where
>    ExtractValue(metadata,'//datafield[@tag="856"]/subfield[@code>="u"]') like '%dawsonera.com%';
>
> This is correct isn't it? I haven't requested $z, so not sure why it is always in the results? Feature? Bug? Or me doing something wrong?
>
> Cheers, Stephen
>
> PS we are on 19.11.
>
> --------------------------------------
> Stephen Graham
> Library Technology Consultant
> Content and Collections Team
> Library and Computing Services
> University of Hertfordshire
> Tel: 01707 286111
> Ext: 77751
> Email: s.graham4 at herts.ac.uk<mailto:s.graham4 at herts.ac.uk>
>
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-- 
Ian Bays
Director, PTFS Europe Limited
Content Management and Library Solutions
+44 (0) 7774 995297 (mobile)
skype: ian.bays
email: ian.bays at ptfs-europe.com