Drop index idx_image in #__languages table
This index is dropped because ordering by this field is only used very rarely in backend content languages view.
Testing Instructions
Apply patch
Install joomla clean install form staging
Check if don't have a non unique idx_image index in #__languages table
Update 3.7.0-2016-11-21.sql (e021f69) does not work with a postgreSQL database.
Perhaps, you could replace the SQL request by :
ALTER TABLE "#__languages" DROP CONSTRAINT "#__languages_idx_image";
I can't test it, because update with a zip file does not work.
I have tested this item✅ successfully on e021f69
OK here with mysql
This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/13252.