다음 14일 동안 기념일이 있는 이벤트를 찾는 방법(연도 무시)

WITH anniversaries AS (
  SELECT event_id, event_date,
         (event_date + (n || ' years')::interval)::date AS anniversary
  FROM   event, generate_series(13, 113) n
)
SELECT event_id, event_date
FROM   anniversaries
WHERE  anniversary BETWEEN current_date AND current_date + interval '14' day;

SELECT event_id, event_date
FROM   event
WHERE  extract(month FROM age(current_date + 14, event_date))  = 0
AND    extract(day   FROM age(current_date + 14, event_date)) <= 14;

CREATE OR REPLACE FUNCTION this_years_birthday(_dut date)
  RETURNS date
  LANGUAGE sql AS
$func$
SELECT (date_trunc('year', now()) + ( - date_trunc('year', )))::date
$func$;

SELECT *
FROM   event e
WHERE  this_years_birthday(event_date) BETWEEN current_date
                                             AND (current_date + 14);