CREATE TABLE `isv_merchant`
(
    `id`            bigint(20) unsigned NOT NULL AUTO_INCREMENT COMMENT 'id',
    `app_id`        varchar(100) NOT NULL COMMENT 'appId',
    `merchant_code` varchar(100) NOT NULL DEFAULT '0' COMMENT '商户code',
    `add_time`      datetime     NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '添加时间',
    `update_time`   datetime     NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '修改时间',
    `add_by`        bigint(20) DEFAULT '0' COMMENT '创建人id',
    `update_by`     bigint(20) DEFAULT '0' COMMENT '修改人id',
    PRIMARY KEY (`id`),
    UNIQUE KEY `uk_appid_merchant` (`app_id`, merchant_code)
) ENGINE=InnoDB COMMENT='isv商户关系表';