CREATE PROCEDURE usp_withdraw_money(account_id INT, money_amount DECIMAL(38,4))
	BEGIN
		START TRANSACTION;
			UPDATE accounts a
			SET a.balance = a.balance - money_amount
			WHERE a.id = account_id;
		IF (SELECT a.balance FROM accounts a WHERE a.id=account_id) >= 0
		THEN  COMMIT ;
		ELSE
			ROLLBACK ;
		END IF;
	END;