ALTER TABLE atu_execute_plan.atu_plan_task
ADD COLUMN `last_heartbeat_time`  datetime NULL COMMENT '执行心跳时间' AFTER `created_time`;

ALTER TABLE atu_execute_plan.atu_plan_scene_case_task
ADD COLUMN `last_heartbeat_time`  datetime NULL COMMENT '执行心跳时间' AFTER `created_time`;