统计学时问题修复

@@ -2091,6 +2091,8 @@ function id_xueshi($id){
         ->where(['uid'=>$id,'status'=>'3'])
         ->field(' SUM(yuyue_end - yuyue_begin) as yyxs ')
         ->select();
+    echo Db::name('yuyue')->getLastSql();
+    var_dump($name);
     $yyxs = $name ? $name['yyxs'] : 0;
     return $yyxs;
 }