DELIMITER $$
CREATE
    EVENT `DispatchUserArchive`
    ON SCHEDULE EVERY 1 WEEK STARTS '2012-12-11 07:00:00'
    DO BEGIN
        -- Dispatch new user event
        INSERT INTO user_event (id, title, deion)
        SELECT id, title, deion
        FROM user
        WHERE userPost < '2013-01-01';
        -- Delete previous event
        /*SQL*/        
        -- Normalize user discovery history
        /*SQL*/
    END */$$
DELIMITER ;

여기서 어느기간동안 한번씩 EVENT 진행되는지랑 시작은 알겠는데 끝은 어떻게 정함?