SELECT group_concat(mb_id)as mb_id FROM (SELECT A.mb_id, A.mb_name, A.mb_mobile, A.mb_userid, A.mb_d_photo, A.mb_d_sido FROM inko_member A, inko_dealer_payment B WHERE A.mb_level = 2 and A.mb_is_show = 1 and A.mb_group_no < 3 and A.mb_id<>1 and B.dp_start_date < unix_timestamp() AND B.dp_end_date > unix_timestamp() AND A.mb_id = B.mb_id ORDER BY RAND() LIMIT 1) a ORDER BY RAND();
MySQL server has gone away