update

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

@@ -1564,7 +1564,7 @@
         <if test="status != null">
             and status_ = #{status,typeHandler=com.ym.mec.common.dal.CustomEnumTypeHandler}
         </if>
-        union
+        union all
         select ncs.* from course_schedule cs left join course_schedule ncs on ncs.id_ = cs.new_course_id_
         where cs.new_course_id_ &gt; 0 and cs.class_group_id_ = #{classGroupId}
         <if test="status != null">
@@ -3339,7 +3339,7 @@
 		(SELECT cs.type_ course_type_,SUM(TIMESTAMPDIFF(MINUTE,STR_TO_DATE(concat(cs.class_date_,' ',cs.start_class_time_),'%Y-%m-%d %H:%i:%s'),
         STR_TO_DATE(concat(cs.class_date_,' ',cs.end_class_time_),'%Y-%m-%d %H:%i:%s'))) remain_minutes_
 		from course_schedule cs where FIND_IN_SET(cs.class_group_id_,#{classgroupId}) and cs.status_ = 'NOT_START' and (cs.new_course_id_ is null or cs.new_course_id_ = 0) group by cs.type_
-		UNION  
+		UNION all
 		SELECT ncs.type_ course_type_,SUM(TIMESTAMPDIFF(MINUTE,STR_TO_DATE(concat(ncs.class_date_,' ',ncs.start_class_time_),'%Y-%m-%d %H:%i:%s'),
         STR_TO_DATE(concat(ncs.class_date_,' ',ncs.end_class_time_),'%Y-%m-%d %H:%i:%s'))) remain_minutes_ FROM course_schedule cs LEFT JOIN course_schedule ncs ON ncs.id_ = cs.new_course_id_ 
 		  WHERE FIND_IN_SET(cs.class_group_id_,#{classgroupId}) and cs.new_course_id_ &gt; 0 AND ncs.status_ = 'NOT_START' GROUP BY ncs.type_) a