[Level 2] 입양 시각 구하기(1)

[문제]

 

 

 

[코드]

SELECT
    TO_CHAR(DATETIME, 'hh24') AS HOUR
    , COUNT(*)
FROM ANIMAL_OUTS
WHERE TO_CHAR(DATETIME, 'hh24') BETWEEN '09' AND '19'
GROUP BY TO_CHAR(DATETIME, 'hh24')
ORDER BY HOUR;