数据表SQL
CREATE TABLE `countrys` (
  `id` bigint(20) unsigned NOT NULL AUTO_INCREMENT,
  `created_at` timestamp NULL DEFAULT NULL,
  `updated_at` timestamp NULL DEFAULT NULL,
  `code` varchar(20) ...			
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				数据表SQL
CREATE TABLE `countrys` (
  `id` bigint(20) unsigned NOT NULL AUTO_INCREMENT,
  `created_at` timestamp NULL...