update

src/main/resources/config/mybatis/CourseGroupInfoMapper.xml

@@ -93,7 +93,7 @@
 
 	<select id="getCourses" resultMap="CourseGroupInfo">
 		SELECT * FROM course_group_info WHERE sub_id_ IN (SELECT MIN(sub_id_)sub_id_ FROM course_group_info
-		WHERE class_id_ = #{classId} GROUP BY sub_name_)
+		WHERE class_id_ = #{classId} GROUP BY sub_name_) AND class_id_ = #{classId}
 	</select>
 
 	<!-- 根据id和version更新实际已招生人数 -->