CREATE TABLE IF NOT EXISTS payment_refund_intent (
 refund_no VARCHAR(32) CHARACTER SET ascii COLLATE ascii_bin NOT NULL PRIMARY KEY,
 order_id BIGINT NOT NULL,
 amount DECIMAL(20,0) NOT NULL,
 created_time DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
 KEY idx_refund_intent_order(order_id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
-- Never delete an uncertain intent merely to retry with a different amount.