ALTER TABLE `notification`
ADD COLUMN `participant_id` INT UNSIGNED NULL DEFAULT NULL AFTER `shipcall_id`,
ADD INDEX `FK_NOTIFICATION_PARTICIPANT_idx` (`participant_id` ASC) VISIBLE;
;
ALTER TABLE `notification`
ADD CONSTRAINT `FK_NOTIFICATION_PARTICIPANT`
  FOREIGN KEY (`participant_id`)
  REFERENCES `participant` (`id`)
  ON DELETE RESTRICT
  ON UPDATE RESTRICT;