Hi all

I sent this through yesterday (see below) and it's really annoying me: The 
query seems to bring up 0 results when I'm trying to compare authids (UNSIGNED) 
to an ExtractValue string from biblio_metadata.metadata (LONGTEXT?). Is this 
even possible? If so, how do I go about CONVERTing my authids so that they're 
the same data type as the ExtractValue strings?

Or am I doing this the wrong way? Is there a better way for me to list a set of 
itemnumbers from a known set of authids?


With kind regards from the Dalton McCaughey Library Team



Carlos Lopez



Dalton McCaughey Library | 29 College Crescent, Parkville, VICTORIA 3052

Ph: 03 9340 8888 ext.1 | libr...@dml.vic.edu.au<mailto:libr...@dml.vic.edu.au> 
| library.dmlibrary.org.au


________________________________
From: Koha <koha-boun...@lists.katipo.co.nz> on behalf of Carlos Lopez 
<clo...@dml.vic.edu.au>
Sent: Tuesday, 25 August 2020 10:28 AM
To: koha <koha@lists.katipo.co.nz>
Subject: [Koha] Help with SQL script please

Hi everyone

I'm trying to produce a list of itemnumbers for a list of bibliographic records 
with biblionumbers where subfield $9 in the 100 tag is in a list of authids for 
authorities with the value "Jesuit" in 373$a (where trying to populate a 
particular ccode with a set of items that we know will be relevant for that 
ccode).

I have the following SQL query which SEEMS to run but brings up no results 
(even though I know that we have authority records with 373$aJesuit linked from 
bibliographic records with items attached):


----
SELECT i.itemnumber, b.title, b.author
FROM items i
LEFT JOIN biblio b ON b.biblionumber = i.biblionumber
WHERE i.biblionumber IN
     (SELECT biblionumber
     FROM biblio_metadata
     WHERE ExtractValue(metadata, '//datafield[tag=100]/subfield[@code="9"]') IN
         (SELECT authid
         FROM auth_header
         WHERE ExtractValue(marcxml, 
'//datafield[@tag="373"]/subfield[@code="a"]') LIKE "Jesuit%"))
----

Can anyone spot where I've gone wrong? Or perhaps point me to an easier way of 
doing this?


With kind regards from the Dalton McCaughey Library Team



Carlos Lopez



Dalton McCaughey Library | 29 College Crescent, Parkville, VICTORIA 3052

Ph: 03 9340 8888 ext.1 | libr...@dml.vic.edu.au<mailto:libr...@dml.vic.edu.au> 
| library.dmlibrary.org.au

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