https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=32556 --- Comment #3 from Galen Charlton <gmcharlt@gmail.com> --- This could do it in-place: ALTER TABLE borrower_message_transport_preferences DROP FOREIGN KEY borrower_message_transport_preferences_ibfk_1; ALTER TABLE borrower_message_preferences0 MODIFY borrower_message_preference_id bigint(11) UNSIGNED NOT NULL AUTO_INCREMENT; ALTER TABLE borrower_message_transport_preferences MODIFY borrower_message_preference_id bigint(11) UNSIGNED NOT NULL DEFAULT 0; ALTER TABLE borrower_message_transport_preferences ADD CONSTRAINT borrower_message_transport_preferences_ibfk_1 FOREIGN KEY (`borrower_message_preference_id`) REFERENCES `borrower_message_preferences` (`borrower_message_preference_id`) ON DELETE CASCADE ON UPDATE CASCADE; -- You are receiving this mail because: You are the assignee for the bug. You are watching all bug changes.