fix:优化

cooleshow-user/user-biz/src/main/resources/config/mybatis/CourseHomeworkMapper.xml

@@ -187,6 +187,7 @@
                 and cssp.user_id_ = #{studentId}
             </if>
         </where>
+        limit 1
     </select>
 
 	<select id="selectPaymentStudentInfo" resultType="com.yonge.cooleshow.biz.dal.vo.CourseHomeworkDetailVo">