-- 2013-06-14
SELECT * FROM `sms_fee` WHERE `event_id` IS NULL AND `contact_id` IS NULL AND school_id='483794c4-adee-a607-f685-4441c943a1e2' ;

UPDATE `sms_fee` SET deleted=1 WHERE `event_id` IS NULL AND `contact_id` IS NULL AND school_id!='483794c4-adee-a607-f685-4441c943a1e2' ;