SELECT FROM_UNIXTIME( mc.tstamp,    '%m月%e日 %H:%i' ) AS tstamp,    '礼包领取' AS
TYPE , c.title AS card_title, mc.code, c.external_link, c.id AS card_id
FROM st_mm_card_code mc
LEFT JOIN st_card c ON c.id = mc.cardid
LIMIT 0 , 30