未分班学生列表优化

suser/src/main/java/com/xhkjedu/suser/service/gradeclass/ClassStudentService.java

     }
 
     public List<ClassStudentVo> listNoClassStu(TClassStudent student) {
+        if(N_Utils.isEmpty(student.getFieldname())) {
+            student.setFieldname("studentname");
+            student.setFieldorder("asc");
+        }
         setOrderField(student);
         setYear(student);
         return classStudentMapper.listNoClassStu(student);

suser/src/main/resources/mapper/gradeclass/ClassStudentMapper.xml

         select u.username studentname,u.studentno,u.usersex,u.userid studentid,u.loginname,u.createtime,
         u.bindmac,u.mac,u.userstate,u.usertime,u.headpic,u.userlock,u.examno
         ,(case when u.userphone='' then userphone else concat(left(u.userphone,3),'****',right(u.userphone,4)) end)userphone
-        from t_user u left join
-        (select cs1.studentid,cs1.createtime from t_class_student cs1
+        from t_user u
+        where u.schoolid=#{student.schoolid} and u.usertype=2 and u.userid not in(
+        select cs1.studentid from t_class_student cs1
         left join t_class c on cs1.classid=c.classid where c.schoolid=#{student.schoolid} and c.year=#{student.year}
-        and c.classtype=1 and c.classstate=1) cs on u.userid=cs.studentid
-        where u.schoolid=#{student.schoolid} and u.usertype=2 and cs.studentid is null
+        and c.classtype=1 and c.classstate=1)
         <if test="student.userlock!=null and student.userlock!=0">
             and u.userlock=#{student.userlock}
         </if>