윈도우 함수 중 FIRST_VALUE(), LAST_VALUE(), NTH_VALUE() 함수에 대해 알아보겠습니다. 이용할 데이터 예시swimmerevent_daterace_timewoo2024-10-0152.3woo2024-10-0350.5woo2024-10-0551.1gyoung2024-10-0156.7gyoung2024-10-0255.9 FIRST_VALUE()윈도우 내에서 첫 번째 값을 반환합니다.SELECT swimmer, event_date, race_time, FIRST_VALUE(race_time) OVER (PARTITION BY swimmer ORDER BY event_date) AS first_race_timeFROM swimming_races;swimmerevent_..