text: DROP TABLE IF EXISTS `bb_order_appointments`;
  CREATE TABLE bb_order_appointments (
    id             bigint(11) unsigned NOT NULL AUTO_INCREMENT,
    order_id       bigint(11) unsigned NOT NULL comment '订单编号',
    room_id        bigint(11) unsigned NOT NULL comment '会议室编号',
    meeting_name   varchar(32)         NOT NULL comment '自定义会议室名',
    start_time     datetime            NOT NULL comment '预约的开始时间',
    end_time       datetime            NOT NULL comment '预约的结束时间',
    contact_name   varchar(32)         NOT NULL comment '联系人名字',
    contact_mobile varchar(11)         NOT NULL comment '联系人电话',
    remark         text                COMMENT '预约备注',
    created_at     timestamp           DEFAULT CURRENT_TIMESTAMP,
    updated_at     timestamp           DEFAULT CURRENT_TIMESTAMP
    ON UPDATE CURRENT_TIMESTAMP,
    PRIMARY KEY (id)
  )
    ENGINE = InnoDB
    DEFAULT CHARSET = utf8;
  CREATE INDEX bb_order_appointments_order_id on bb_order_appointments(order_id);
  CREATE INDEX bb_order_appointments_room_id on bb_order_appointments(room_id);
  CREATE INDEX bb_order_appointments_mobile on bb_order_appointments(contact_mobile)