1 UP_SQL = """ 2 ALTER TABLE special_tasks ADD requested_by_id integer; 3 4 ALTER TABLE special_tasks ADD CONSTRAINT special_tasks_requested_by_id 5 FOREIGN KEY (requested_by_id) REFERENCES users (id) ON DELETE NO ACTION; 6 """ 7 8 DOWN_SQL = """ 9 ALTER TABLE special_tasks DROP FOREIGN KEY special_tasks_requested_by_id; 10 ALTER TABLE special_tasks DROP COLUMN requested_by_id; 11 """ 12
