[프로그래머스]SQL 있었는데요 없었습니다

링크 : 

https://school.programmers.co.kr/learn/courses/30/lessons/59043

프로그래머스

-- 코드를 입력하세요
SELECT 
    INS.ANIMAL_ID AS ANIMAL_ID,
    INS.NAME AS NAME
    
FROM 
    ANIMAL_INS AS INS
LEFT JOIN
    ANIMAL_OUTS AS OUTS
ON
    INS.ANIMAL_ID = OUTS.ANIMAL_ID
WHERE
    TIMESTAMPDIFF(MINUTE,INS.DATETIME,OUTS.DATETIME) <= 0
ORDER BY
    INS.DATETIME;