按更新时间
MySQL Query : SELECT * FROM `apk_new`.`aps_items` WHERE id>0 and pt_bigclass = '1' and pt_smallclass = '16' ORDER BY pt_update_time desc,id desc LIMIT 0,32
MySQL Error : Unknown column 'pt_update_time' in 'order clause'
MySQL Errno : 1054
Message : Unknown column 'pt_update_time' in 'order clause'