update

mec-biz/src/main/resources/config/mybatis/StudentManageDao.xml

@@ -147,7 +147,7 @@
         sr.parents_phone_,sr.current_class_,sr.current_grade_
         FROM sys_user su
         LEFT JOIN student_registration sr ON su.id_ = sr.user_id_
-        WHERE su.id_ =#{userId} AND su.user_type_ LIKE CONCAT('%',"STUDENT",'%')
+        WHERE su.id_ =#{userId} AND su.user_type_ LIKE CONCAT('%',"STUDENT",'%') LIMIT 1
     </select>
 
     <select id="findGoodsNamesByIds" resultType="string">