CREATE TABLE IF NOT EXISTS `tb_datacenter_write_receipt`
(
    `idempotency_key` VARCHAR(64) NOT NULL COMMENT '稳定幂等键摘要',
    `payload_hash`    VARCHAR(64) NOT NULL COMMENT '写入负载摘要',
    `created`         DATETIME    NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
    PRIMARY KEY (`idempotency_key`),
    KEY `idx_datacenter_write_receipt_created` (`created`)
) ENGINE = InnoDB
  DEFAULT CHARSET = utf8mb4
  COLLATE = utf8mb4_general_ci
  COMMENT = '数据中心工作流写入幂等回执';
