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-- 코드를 입력하세요

SELECT *

from (select T1.name, T1.datetime

from ANIMAL_INS T1

left join ANIMAL_OUTS T2

on T1.animal_id = T2.animal_id

where T2.animal_id is null

order by T1.datetime)

where rownum<=3;

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-- 코드를 입력하세요

SELECT ANIMAL_ID

from ANIMAL_INS

where NAME is not null

order by ANIMAL_ID ASC

 

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