update

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

@@ -72,7 +72,7 @@
         DELETE FROM class_group_student_mapper WHERE music_group_id_=#{groupId} AND group_type_=#{groupType,typeHandler=com.ym.mec.common.dal.CustomEnumTypeHandler}
     </delete>
     <delete id="deleteClassGroupStudent">
-        DELETE FROM class_group_student_mapper WHERR class_group_id_=#{classGroupId} AND user_id_=#{userId}
+        DELETE FROM class_group_student_mapper WHERE class_group_id_=#{classGroupId} AND user_id_=#{userId}
     </delete>
 
     <update id="deleteByGroupWithLogic">