ALTER TABLE `wf_teacher_course_time_detail`   
  CHANGE `teacher_id` `teacher_id` LONGTEXT NULL   COMMENT '补课人员';

ALTER TABLE `teacher_award`   
  ADD COLUMN `award_date` DATE NULL   COMMENT '获奖日期' AFTER `whole_competition_name`;

ALTER TABLE  `student_leave`   
  ADD COLUMN `is_notice` INT DEFAULT 0  NULL   COMMENT '是否已通知班主任和家长(0:否 1:是)' AFTER `hikvision_result`;
