ALTER TABLE `live_scene_live_info`
MODIFY COLUMN `info_type`  smallint(6) NULL DEFAULT NULL COMMENT '类型,1:记者，2：直播间,3：第三方拉流' AFTER `info_name`,
ADD COLUMN `pull_start`  datetime NULL COMMENT '拉流开始时间' AFTER `tenant_id`,
ADD COLUMN `pull_end`  datetime NULL COMMENT '拉流结束时间' AFTER `pull_start`;

ALTER TABLE `live_scene_live_info_ext`
ADD COLUMN `pull_url`  varchar(500) NULL COMMENT '拉流地址' AFTER `tenant_id`;

