diff --git a/src/main/resources/mappers/MemberMapper.xml b/src/main/resources/mappers/MemberMapper.xml
index caa7400..a8b6e28 100644
--- a/src/main/resources/mappers/MemberMapper.xml
+++ b/src/main/resources/mappers/MemberMapper.xml
@@ -5,7 +5,7 @@
     <!--
       WARNING - @mbg.generated
       This element is automatically generated by MyBatis Generator, do not modify.
-      This element was generated on Fri Jun 30 10:29:24 CST 2023.
+      This element was generated on Fri Jun 30 14:15:42 CST 2023.
     -->
     <id column="member_id" jdbcType="VARCHAR" property="memberId" />
     <result column="training_id" jdbcType="VARCHAR" property="trainingId" />
@@ -33,7 +33,7 @@
     <!--
       WARNING - @mbg.generated
       This element is automatically generated by MyBatis Generator, do not modify.
-      This element was generated on Fri Jun 30 10:29:24 CST 2023.
+      This element was generated on Fri Jun 30 14:15:42 CST 2023.
     -->
     <where>
       <foreach collection="oredCriteria" item="criteria" separator="or">
@@ -67,7 +67,7 @@
     <!--
       WARNING - @mbg.generated
       This element is automatically generated by MyBatis Generator, do not modify.
-      This element was generated on Fri Jun 30 10:29:24 CST 2023.
+      This element was generated on Fri Jun 30 14:15:42 CST 2023.
     -->
     <where>
       <foreach collection="example.oredCriteria" item="criteria" separator="or">
@@ -101,7 +101,7 @@
     <!--
       WARNING - @mbg.generated
       This element is automatically generated by MyBatis Generator, do not modify.
-      This element was generated on Fri Jun 30 10:29:24 CST 2023.
+      This element was generated on Fri Jun 30 14:15:42 CST 2023.
     -->
     member_id, training_id, name, student_number, major, class_grade, stu_rank, initial_capital, 
     total_assets, net_value, margin_used, available_funds, margin_level, position_profit_loss, 
@@ -112,7 +112,7 @@
     <!--
       WARNING - @mbg.generated
       This element is automatically generated by MyBatis Generator, do not modify.
-      This element was generated on Fri Jun 30 10:29:24 CST 2023.
+      This element was generated on Fri Jun 30 14:15:42 CST 2023.
     -->
     select
     <if test="distinct">
@@ -131,7 +131,7 @@
     <!--
       WARNING - @mbg.generated
       This element is automatically generated by MyBatis Generator, do not modify.
-      This element was generated on Fri Jun 30 10:29:24 CST 2023.
+      This element was generated on Fri Jun 30 14:15:42 CST 2023.
     -->
     select 
     <include refid="Base_Column_List" />
@@ -142,7 +142,7 @@
     <!--
       WARNING - @mbg.generated
       This element is automatically generated by MyBatis Generator, do not modify.
-      This element was generated on Fri Jun 30 10:29:24 CST 2023.
+      This element was generated on Fri Jun 30 14:15:42 CST 2023.
     -->
     delete from sys_member
     where member_id = #{memberId,jdbcType=VARCHAR}
@@ -151,7 +151,7 @@
     <!--
       WARNING - @mbg.generated
       This element is automatically generated by MyBatis Generator, do not modify.
-      This element was generated on Fri Jun 30 10:29:24 CST 2023.
+      This element was generated on Fri Jun 30 14:15:42 CST 2023.
     -->
     delete from sys_member
     <if test="_parameter != null">
@@ -162,7 +162,7 @@
     <!--
       WARNING - @mbg.generated
       This element is automatically generated by MyBatis Generator, do not modify.
-      This element was generated on Fri Jun 30 10:29:24 CST 2023.
+      This element was generated on Fri Jun 30 14:15:42 CST 2023.
     -->
     insert into sys_member (member_id, training_id, name, 
       student_number, major, class_grade, 
@@ -185,7 +185,7 @@
     <!--
       WARNING - @mbg.generated
       This element is automatically generated by MyBatis Generator, do not modify.
-      This element was generated on Fri Jun 30 10:29:24 CST 2023.
+      This element was generated on Fri Jun 30 14:15:42 CST 2023.
     -->
     insert into sys_member
     <trim prefix="(" suffix=")" suffixOverrides=",">
@@ -323,7 +323,7 @@
     <!--
       WARNING - @mbg.generated
       This element is automatically generated by MyBatis Generator, do not modify.
-      This element was generated on Fri Jun 30 10:29:24 CST 2023.
+      This element was generated on Fri Jun 30 14:15:42 CST 2023.
     -->
     select count(*) from sys_member
     <if test="_parameter != null">
@@ -334,7 +334,7 @@
     <!--
       WARNING - @mbg.generated
       This element is automatically generated by MyBatis Generator, do not modify.
-      This element was generated on Fri Jun 30 10:29:24 CST 2023.
+      This element was generated on Fri Jun 30 14:15:42 CST 2023.
     -->
     update sys_member
     <set>
@@ -410,7 +410,7 @@
     <!--
       WARNING - @mbg.generated
       This element is automatically generated by MyBatis Generator, do not modify.
-      This element was generated on Fri Jun 30 10:29:24 CST 2023.
+      This element was generated on Fri Jun 30 14:15:42 CST 2023.
     -->
     update sys_member
     set member_id = #{record.memberId,jdbcType=VARCHAR},
@@ -442,7 +442,7 @@
     <!--
       WARNING - @mbg.generated
       This element is automatically generated by MyBatis Generator, do not modify.
-      This element was generated on Fri Jun 30 10:29:24 CST 2023.
+      This element was generated on Fri Jun 30 14:15:42 CST 2023.
     -->
     update sys_member
     <set>
@@ -513,7 +513,7 @@
     <!--
       WARNING - @mbg.generated
       This element is automatically generated by MyBatis Generator, do not modify.
-      This element was generated on Fri Jun 30 10:29:24 CST 2023.
+      This element was generated on Fri Jun 30 14:15:42 CST 2023.
     -->
     update sys_member
     set training_id = #{trainingId,jdbcType=VARCHAR},
@@ -538,4 +538,9 @@
       training_name = #{trainingName,jdbcType=VARCHAR}
     where member_id = #{memberId,jdbcType=VARCHAR}
   </update>
+
+  <select id="selectClassGrade" resultType="java.lang.String">
+    SELECT class_grade
+    FROM sys_member where school_id = #{schoolId}
+  </select>
 </mapper>
\ No newline at end of file