select a.*, b.bo_subject, b.bo_mobile_subject, c.gr_subject, c.gr_id from g5_board_new a, g5_board b, g5_group c where a.bo_table = b.bo_table and b.gr_id = c.gr_id and b.bo_use_search = 1 and a.mb_id = 'admin' order by a.bn_id desc limit 0, 15