Oracle Oracle 에서 날짜 데이터의 년월을 추출하는 대표적인 방법으로는 EXTRACT 함수와 TO_CHAR 함수가 있음 (일,시,분,초 도 추출 가능) 1. EXTRACT SELECT EXTRACT(YEAR FROM my_date_column) AS year, EXTRACT(MONTH FROM my_date_column) AS month, EXTRACT(DAY FROM my_date_column) AS day, EXTRACT(HOUR FROM my_date_column) AS hour, EXTRACT(MINUTE FROM my_date_column) AS minute, EXTRACT(SECOND FROM my_date_column) AS second FROM my_table; 2. TO_CHAR..