Creative Code

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프로그래머스 SQL 문제풀이(Oracle)/SQL LV2(Oracle)

입양 시각 구하기(1)

빛하루 2023. 9. 2. 16:58
SELECT to_number(to_char(DATETIME,'hh24')) AS HOUR,COUNT(to_char(DATETIME,'hh24')) AS COUNT 
FROM ANIMAL_OUTS
WHERE to_char(DATETIME,'hh24') >= 9 AND to_char(DATETIME,'hh24') <20
GROUP BY to_char(DATETIME,'hh24')
ORDER BY to_char(DATETIME,'hh24');