1. To recycle the schedule, whether the database saves a record storage rule or resolves the rule to store all time nodes in the database. (Currently, the rules are saved to the database)
2. How to modify or delete the schedule (current time point, current time point and later) if the schedule rules are saved to the database is repeated

Repeat schedule rule generator http://jakubroztocil.github.io/rrule/

• My table structure

CREATE TABLE `schedule_info` (
  `schedule_id` char(32) NOT NULL COMMENT '',
  `group_id` char(32) DEFAULT NULL COMMENT '',
  `calendar_id` char(32) NOT NULL COMMENT '',
  `schedule_summary` varchar(255) DEFAULT NULL COMMENT '',
  `schedule_desc` varchar(500) DEFAULT NULL COMMENT '',
  `location` varchar(255) DEFAULT NULL COMMENT '',
  `start_time` datetime DEFAULT NULL COMMENT '',
  `end_time` datetime DEFAULT NULL COMMENT '',
  `rule` varchar(255) DEFAULT NULL COMMENT '',
  `timezone` tinyint(2) DEFAULT '8' COMMENT '',
  `attendee_authority` char(2) DEFAULT '02' COMMENT ' ',
  `is_all_day` bit(1) DEFAULT b'0' COMMENT '',
  `repeat_type` char(2) DEFAULT NULL COMMENT '',
  `organizer` varchar(64) DEFAULT NULL COMMENT '',
  `organizer_name` varchar(32) DEFAULT NULL COMMENT ''
  
  PRIMARY KEY (`schedule_id`),
  KEY `IDX_GROUP_ID` (`group_id`),
  KEY `IDX_CALENDAR_ID` (`calendar_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT='';


INSERT INTO `schedule_info` (`schedule_id`, `group_id`, `calendar_id`, `schedule_summary`, `schedule_desc`, `location`, `start_time`, `end_time`, `rule`, `timezone`, `attendee_authority`, `is_all_day`, `repeat_type`, `organizer`, `organizer_name`) VALUES ('1d540f5027c3a5eac63c9b6bdf8933bf', '59b7df9486a84b5b99adeba77f840b7d', '29a75744a7cda6800f36a0dbca08ac6e', 'Test schedule', 'Schedule description', 'Place', '2021-09-03 12:00:00', '2021-09-03 12:30:00', 'DTSTART:20210903T023000Z\nRRULE:FREQ=DAILY', 8, '02', b'0', '01');

I am searching for a long time on net. But no use. Please help or try to give some ideas how to achieve this.