MobileRead Forums - View Single Post - Multiple table rows for book in custom_column_x

kovidgoyal · 03-14-2014, 06:58 AM

It's been many years since the first version of custom column code was written, but the current code most definitely creates uniqueness constraints, as you can see in lines 885 onwards in db/backend.py

I suggest you create a new custom column, copy over the values using metadata search and replace and delete the old one.

03-14-2014, 06:58 AM	#4
kovidgoyal creator of calibre Posts: 45,484 Karma: 28005164 Join Date: Oct 2006 Location: Mumbai, India Device: Various	It's been many years since the first version of custom column code was written, but the current code most definitely creates uniqueness constraints, as you can see in lines 885 onwards in db/backend.py I suggest you create a new custom column, copy over the values using metadata search and replace and delete the old one.