CREATE TABLE posts(
    id SERIAL NOT NULL PRIMARY KEY,
    title VARCHAR(100) NOT NULL,
    description TEXT NOT NULL,
    url VARCHAR(255) UNIQUE,
    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
);

CREATE TRIGGER set_timestamp
BEFORE UPDATE ON posts
FOR EACH ROW
EXECUTE PROCEDURE trigger_set_timestamp();

---- create above / drop below ----

DROP TABLE posts;