text: -- bulletins
  ALTER TABLE bulletin DROP CONSTRAINT bulletin_user_id_fkey;
  ALTER TABLE bulletin ADD CONSTRAINT bulletin_user_id_fkey FOREIGN KEY (user_id) REFERENCES public.app_user(id) ON DELETE CASCADE;
  
  -- contact methods
  ALTER TABLE contact_method DROP CONSTRAINT contact_method_user_id_fkey;
  ALTER TABLE contact_method ADD CONSTRAINT contact_method_user_id_fkey FOREIGN KEY (user_id) REFERENCES app_user(id) ON DELETE CASCADE;
  
  -- match groups
  ALTER TABLE match_group_app_user DROP CONSTRAINT match_group_app_user_user_id_fkey;
  ALTER TABLE match_group_app_user ADD CONSTRAINT match_group_app_user_user_id_fkey FOREIGN KEY (user_id) REFERENCES app_user(id) ON DELETE CASCADE;