1、添加教务老师字段

2、布置作业

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

@@ -198,7 +198,7 @@
 			AND cs.group_type_ = 'COMM'
 			AND cg.student_num_ = 0
 			AND csg.status_='NORMAL'
-		GROUP BY csg.id_ HAVING MAX(cs.class_date_)<=DATE_FORMAT(#{startDate}, '%Y-%m-%d')
+		GROUP BY csg.id_ HAVING MIN(cs.class_date_)<=DATE_FORMAT(#{startDate}, '%Y-%m-%d')
     </select>
     <select id="findNoCoursesGroups" resultMap="CoursesGroup">
 		SELECT