【新增、修改】1、新增 学生、教师关联关系；2、修改 用户表属性，权限属性

exam-module-exam/exam-module-exam-biz/src/main/resources/mapper/specialty/ExamSpecialtyMapper.xml

@@ -28,6 +28,16 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
         </where>
     </select>
 
+    <select id="selectExamSpecialtyPart" resultType="pc.exam.pp.module.exam.controller.admin.specialty.vo.SpecialtyQueryVo">
+        select sp_id as id, sp_name as name, parent_id, status, create_time
+        FROM exam_specialty
+        WHERE
+        (
+        LENGTH(ancestors) - LENGTH(REPLACE(ancestors, ',', ''))
+        ) + 1 &lt;= 2 and status = 0 and deleted = 0
+    </select>
+
+
     <select id="selectExamSpecialtyList" resultType="ExamSpecialty">
         <include refid="selectExamSpecialtyVo"/>
         <where>