PostgreSQL：SELECT WHERE不到15分鍾

Question

從下面的events表中，如何選擇不到15分鍾前創建的events ？

CREATE TABLE events (
    created_at timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP
);

Answer 1

SELECT created_at FROM events WHERE created_at > NOW() - INTERVAL '15 minutes';

Answer 2

SELECT * FROM events WHERE age(now(), created_at) < '15 minutes';