sql/V5.12.11.2__Exchange_constraints_on_draft_and_admission.sql
ALTER TABLE `exchange_admissions`
ADD CONSTRAINT `fk__day_of_admission`
FOREIGN KEY (`day_id`)
REFERENCES `exchange_days` (`id`);
ALTER TABLE `exchange_drafts`
ADD CONSTRAINT `fk__day_of_draft`
FOREIGN KEY (`day_id`)
REFERENCES `exchange_days` (`id`);