1、添加教务老师字段

2、布置作业

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

@@ -436,7 +436,7 @@
     </select>
     <select id="findGroupStudents" resultMap="ClassGroupStudentMapper">
         SELECT * FROM class_group_student_mapper
-        WHERE
+        <where>
             <if test="groupType!=null">
                 AND cgsm.group_type_=#{groupType,typeHandler=com.ym.mec.common.dal.CustomEnumTypeHandler}
             </if>
@@ -449,5 +449,6 @@
             <if test="status!=null">
                 AND status_=#{status,typeHandler=com.ym.mec.common.dal.CustomEnumTypeHandler}
             </if>
+        </where>
     </select>
 </mapper>