?$sql="select?a.id,a.area\_title,a.area\_type,a.max\_limit, ????????????(select?GROUP\_CONCAT(d.device\_name)?from?kc\_device?as?d?where?FIND\_IN\_SET(d.id,a.device\_id))?as?device\_name, ????????????(select?GROUP\_CONCAT(dep.dep\_name)?from?kc\_department?as?dep?where?FIND\_IN\_SET(dep.id,a.dep\_id))?as?dep\_name ????????????from?kc\_area?as?a";???? ????????????$list=Db::query($sql); 結果如下