alter table `joylink`.`rts_draft_training2` ADD COLUMN `map_system` varchar(255) NULL comment '子系统' AFTER `map_id`, ADD COLUMN `terminal` varchar(255) NULL comment '客户端标识' AFTER `map_system`; alter table `joylink`.`rts_published_training2` ADD COLUMN `map_system` varchar(255) NULL comment '子系统' AFTER `map_id`, ADD COLUMN `terminal` varchar(255) NULL comment '客户端标识' AFTER `map_system`;