create table hl_tr.tr_courses_prepare_package_video
(
    id                 bigint(11) unsigned primary key auto_increment,
    lesson_package_id  bigint(11) not null comment '备课包 ID',
    video_id           bigint(11) not null comment '视频 ID',
    seminar_start_time datetime not null comment '互动研讨开始时间',
    seminar_status     tinyint(2) not null default 0 comment '互动研讨状态。0：未开始；1：进行中；2：已结束；',
    is_delete          tinyint(2) not null default 0 comment '是否删除。0：未删；1：已删；',
    create_time        datetime not null default current_timestamp comment '创建时间',
    update_time        datetime not null default current_timestamp on update current_timestamp comment '修改时间'
) engine = InnoDB default charset = utf8mb4 comment = '备课包研讨视频';