CREATE TABLE `t_user_token` (
  `id` bigint(20) NOT NULL COMMENT '主键ID',
  `version` int(11) DEFAULT '0' COMMENT '乐观锁版本',
  `create_user` bigint(20) DEFAULT NULL COMMENT '创建者',
  `create_time` datetime DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
  `update_user` bigint(20) DEFAULT NULL COMMENT '更新者',
  `update_time` datetime DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
  `remark` varchar(500) COLLATE utf8mb4_unicode_ci DEFAULT NULL COMMENT '备注',
  `user_id` bigint(20) NOT NULL COMMENT '用户ID',
  `token` varchar(128) COLLATE utf8mb4_unicode_ci NOT NULL COMMENT 'Token（UUID 或自定义）',
  `expire_time` datetime NOT NULL COMMENT '过期时间',
  PRIMARY KEY (`id`),
  UNIQUE KEY `uk_user_id` (`user_id`),
  KEY `idx_token` (`token`),
  CONSTRAINT `fk_user_token_user` FOREIGN KEY (`user_id`) REFERENCES `t_user_info` (`id`) ON DELETE CASCADE ON UPDATE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='用户认证表';