获取学员考勤列表的接口 原来的是否回访，关联查询的student_visit表，改为直接获取学员考勤表的visit_flag_;

涉及到的接口有  学生端和后台的studentAttendance/findStudentAttendance，
教务端的eduStudentAttendance/findStudentAttendance

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

@@ -496,13 +496,12 @@
                CASE WHEN sa.status_ IS NULL THEN 'TRUANT' ELSE sa.status_ END status_,
         su.username_,su.phone_,su.avatar_,cs.teach_mode_,cs.type_ course_type_,o.name_ organ_name_,tu.real_name_ teacher_name_,cs.name_ course_schedule_name_,cs.status_ course_status_,
         cs.actual_teacher_id_ teacher_id_,cs.class_date_ ,cs.start_class_time_,cs.end_class_time_ ,cs.new_course_id_,
-        CASE WHEN MAX(sv.id_) IS NULL THEN 0 ELSE 1 END visitFlag
+        CASE WHEN sa.visit_flag_ IS NULL THEN 0 ELSE sa.visit_flag_ END visitFlag
         FROM course_schedule_student_payment cssp left join course_schedule cs on cs.id_ = cssp.course_schedule_id_
         left join student_attendance sa on cssp.course_schedule_id_ = sa.course_schedule_id_ and cssp.user_id_ = sa.user_id_
         LEFT JOIN sys_user su ON cssp.user_id_ = su.id_
         left join sys_user tu on tu.id_ = cs.actual_teacher_id_
         left join organization o on o.id_ = cs.organ_id_
-        LEFT JOIN student_visit sv ON cssp.id_ = sv.object_id_
         <include refid="findStudentAttendanceSql"/>
         GROUP BY cssp.id_
         ORDER BY CONCAT(cs.class_date_, ' ', cs.start_class_time_) ASC
@@ -513,10 +512,10 @@
             cs.status_ = 'OVER' AND cs.del_flag_ = 0 AND (cs.new_course_id_ IS NULL OR cs.new_course_id_ = cs.id_)
             <if test="visitFlag != null">
                 <if test="visitFlag == 1">
-                    AND sv.id_ IS NOT NULL
+                    AND sa.visit_flag_ = 1
                 </if>
                 <if test="visitFlag == 0">
-                    AND sv.id_ IS NULL
+                    AND (sa.visit_flag_ = 0 OR sa.visit_flag_ IS NULL)
                 </if>
             </if>
             <if test="courseScheduleId != null">
@@ -570,7 +569,6 @@
         FROM course_schedule_student_payment cssp
         left join course_schedule cs on cs.id_ = cssp.course_schedule_id_
         left join student_attendance sa on cssp.course_schedule_id_ = sa.course_schedule_id_ and cssp.user_id_ = sa.user_id_
-        LEFT JOIN student_visit sv ON cssp.id_ = sv.object_id_
         <include refid="findStudentAttendanceSql"/>
     </select>
     <select id="findByCourseId" resultMap="StudentAttendance">