SELECT 
AGE_CODE as '年齢コード',
AGE_NAME as '年齢階層名',
AVG(SP_TIME_5) as '5時間未満',
AVG(SP_TIME_6) as '5時間以上6時間未満',
AVG(SP_TIME_7) as '6時間以上7時間未満',
AVG(SP_TIME_8) as '7時間以上8時間未満',
AVG(SP_TIME_9) as '8時間以上9時間未満',
AVG(SP_TIME_9OVER) as '9時間以上'
FROM SLEEP_TIME_DTL
JOIN AGE_GRP USING(AGE_CODE)
JOIN PREFECTURE USING(PF_CODE)
WHERE PF_NAME in ('北海道','青森県','岩手県','宮城県','福島県')
GROUP BY AGE_CODE
ORDER BY AGE_CODE