레벨 2
String, Date
https://programmers.co.kr/learn/courses/30/lessons/59414
DATE_FORMAT을 사용하여 풀면 된다.
SELECT DATE_FORMAT(DATETIME,"%Y-%m-%d") AS "날짜"
SELECT ANIMAL_ID, NAME, DATE_FORMAT(DATETIME,"%Y-%m-%d") AS "날짜"
FROM ANIMAL_INS
ORDER BY ANIMAL_ID;
DATE_FORMAT 참고
https://devjhs.tistory.com/89