DROP TABLE IF EXISTS `pay_refund`;
CREATE TABLE `pay_refund` (
  `id` bigint NOT NULL AUTO_INCREMENT COMMENT '支付退款编号',
  `req_no` varchar(64) NOT NULL COMMENT '退款单请求号',
  `merchant_id` bigint NOT NULL COMMENT '商户编号',
  `app_id` bigint NOT NULL COMMENT '应用编号',
  `channel_id` bigint NOT NULL COMMENT '渠道编号',
  `channel_code` varchar(32) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '渠道编码',
  `order_id` bigint NOT NULL COMMENT '支付订单编号 pay_order 表id',
  `trade_no` varchar(64) NOT NULL COMMENT '交易订单号 pay_extension 表no 字段',
  `merchant_order_id` varchar(64) NOT NULL COMMENT '商户订单编号（商户系统生成）',
  `merchant_refund_no` varchar(64) NOT NULL COMMENT '商户退款订单号（商户系统生成）',
  `notify_url` varchar(1024) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NOT NULL COMMENT '异步通知商户地址',
  `notify_status` tinyint NOT NULL COMMENT '通知商户退款结果的回调状态',
  `status` tinyint NOT NULL COMMENT '退款状态',
  `type` tinyint NOT NULL COMMENT '退款类型(部分退款，全部退款)',
  `pay_amount` bigint NOT NULL COMMENT '支付金额,单位分',
  `refund_amount` bigint NOT NULL COMMENT '退款金额,单位分',
  `reason` VARCHAR(256) NOT NULL COMMENT '退款原因',
  `user_ip` varchar(50) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci DEFAULT NULL COMMENT '用户 IP',
  `channel_order_no` varchar(64) NOT NULL COMMENT '渠道订单号，pay_order 中的channel_order_no 对应',
  `channel_refund_no` varchar(64) DEFAULT NULL COMMENT '渠道退款单号，渠道返回',
  `channel_error_code` varchar(128) DEFAULT NULL COMMENT '渠道调用报错时，错误码',
  `channel_error_msg` varchar(256) DEFAULT NULL COMMENT '渠道调用报错时，错误信息',
  `channel_extras` varchar(1024) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci DEFAULT NULL COMMENT '支付渠道的额外参数',
  `expire_time` datetime  DEFAULT NULL COMMENT '退款失效时间',
  `success_time` datetime DEFAULT NULL COMMENT '退款成功时间',
  `notify_time` datetime DEFAULT NULL COMMENT '退款通知时间',
  `creator` varchar(64) DEFAULT '' COMMENT '创建者',
  `create_time` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
  `updater` varchar(64) DEFAULT '' COMMENT '更新者',
  `update_time` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
  `deleted` bit(1) NOT NULL DEFAULT b'0' COMMENT '是否删除',
  PRIMARY KEY (`id`) USING BTREE
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci COMMENT='退款订单';