优化还原sql

application/admin/controller/lottery/Tickets.php

@@ -74,8 +74,8 @@ class Tickets extends Backend
 
     //重置
     public function reset(){
-        set_time_limit(0);
-        $sql = "UPDATE `pi_tickets` SET `deletetime`=NULL ";
+        //set_time_limit(0);
+        $sql = "UPDATE `pi_tickets` SET `deletetime`=NULL WHERE `deletetime` IS NOT NULL ";
         $rs = $this->model->execute($sql);
         $this->success("成功还原--".$rs.'--个号码！');
         //echo $rs;