How to add values ​​to db?

Question

Python

Let's say the value is 30, you need to add another 30 to it to get 60.
How can this be done?

def set_time_sub(self, user_id, time_sub):
        with self.connection:
            return self.cursor.execute("UPDATE `users` SET `time_sub` = ? WHERE `user_id` = ?", (time_sub, user_id,))

time_sub = int(time.time()) + days_to_seconds(30)
            db.set_time_sub(message.from_user.id, time_sub)

Answer 1

UPDATE `users` SET `time_sub` = `time_sub` + ? WHERE `user_id` = ?