text: CREATE TABLE `member_product_category_relation` (
    `id` bigint(20) unsigned NOT NULL,
    `member_id` bigint(20) unsigned DEFAULT NULL,
    `product_category_id` bigint(20) unsigned DEFAULT NULL,
    `create_by` bigint(20) DEFAULT NULL,
    `update_by` bigint(20) DEFAULT NULL,
    `created_at` timestamp NULL DEFAULT NULL,
    `updated_at` timestamp NULL DEFAULT NULL,
    `deleted_at` timestamp NULL DEFAULT NULL,
    PRIMARY KEY (`id`)
  ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT='会员与产品分类关系表（用户喜欢的分类）';