[Koha] SQL Query - Items with a Local Cover Image

[Craig Butosi]

Hi all,

Koha 3.22 on Ubuntu 14.04 LTS (package install)

I`m trying to write a basic SQL query to pull all items with a local cover image. I`m running Coce now, so I no longer need to upload local cover images to Koha. I need to identify these records so I can remove their images. I have a basic query:

SELECT biblionumber FROM biblioimages
WHERE biblionumber AND imagefile IS NOT NULL

which works, but only returns the biblionumber column from the biblioimages table. I`d like to add a call number column from the items table to this report. I`ve tried this

SELECT biblionumber
FROM biblioimages
LEFT JOIN items
ON biblioimages.biblionumber=items.itemcallnumber
WHERE biblionumber AND imagefile IS NOT NULL

But I get an ambiguity error, and I don`t quite understand how to apply an alias to overcome this. The error is as follows:




Craig Butosi, MA, MLIS, B Mus (Hons.)
LIBRARY SERVICES MANAGER
the royal conservatory
TELUS Centre for Performance and Learning
273 Bloor Street West Toronto, ON  M5S 1W2
416.408.2824 x338
www.rcmusic.ca<https://webmail.rcmusic.ca/owa/redir.aspx?C=b481823b299d45ee94b0016389bb76e9&URL=http%3a%2f%2fwww.rcmusic.ca%2f>


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