修改用电量小数计算错误

application/em/controller/Useage.php

@@ -224,7 +224,7 @@ class Useage extends Base
 
         $useage = (new \app\em\model\Useage)->alias('u')
                                         ->field('u.*')
-                                        ->field('(u.current_sum_numb - u.last_sum_numb) as u.repo_numb')
+                                        ->field('(u.current_sum_numb - u.last_sum_numb) as repo_numb')
                                         ->field('emr.pricing_type')
                                         ->leftJoin(['em'],'em.id=u.em_id')
                                         ->leftJoin(['em_rule'=>'emr'],'emr.em_id=em.id')