BEGIN; UPDATE version SET minor = 7; ALTER TABLE votes ALTER COLUMN requestUrl SET NOT NULL ALTER COLUMN userId SET NOT NULL; CREATE OR REPLACE PROCEDURE clear_zero_votes() LANGUAGE SQL AS $$ DELETE FROM requests WHERE NOT EXISTS (SELECT FROM votes WHERE requests.url = votes.requesturl); $$; CREATE OR REPLACE PROCEDURE delete_vote(url varchar,voteuser int) LANGUAGE SQL AS $$ DELETE FROM votes WHERE requesturl = url AND userid = voteuser; CALL update_scores(); CALL clear_zero_votes(); $$; COMMIT;