[Programmers SQL 고득점 Kit] JOIN [3/4] 오랜 기간 보호한 동물(1)

문제 link
https://programmers.co.kr/learn/courses/30/lessons/59044

Code link
https://github.com/JamesJung01/programmers_sql_kit/blob/main/05_JOIN/JOIN-3.sql

SELECT INS.NAME, INS.DATETIME
FROM ANIMAL_INS AS INS
LEFT JOIN ANIMAL_OUTS AS OUTS
ON INS.ANIMAL_ID = OUTS.ANIMAL_ID
WHERE OUTS.ANIMAL_ID IS NULL
ORDER BY INS.DATETIME
LIMIT 3