I think this should do what you want. SELECT biblionumber, itemcallnumber FROM biblioimages LEFT JOIN items using (biblionumber) WHERE imagefile IS NOT NULL On Mar 26, 2016 1:51 PM, "Craig Butosi" <craig.butosi@rcmusic.ca> wrote:
Sorry, sent prematurely:
The error is :
The following error was encountered: The database returned the following error: Column 'biblionumber' in field list is ambiguous Please check the log for further details.
Any suggestions?
Many thanks,
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
________________________________ From: Craig Butosi Sent: Saturday, March 26, 2016 1:49 PM To: Koha Subject: SQL Query - Items with a Local Cover Image
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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