SELECT 
    DTL.AGE_CODE AS 年齢コード,
    AGE_NAME AS 年齢階層,
    SUM(SP_TIME_5) AS `5時間未満`,
    SUM(SP_TIME_6) AS `5時間以上6時間未満`,
    SUM(SP_TIME_7) AS `6時間以上7時間未満`,
    SUM(SP_TIME_8) AS `7時間以上8時間未満`,
    SUM(SP_TIME_9) AS `8時間以上9時間未満`,
    SUM(SP_TIME_9OVER) AS `9時間以上`
FROM
    SLEEP_TIME_DTL AS DTL
JOIN AGE_GRP ON DTL.AGE_CODE = AGE_GRP.AGE_CODE
JOIN (
SELECT * 
FROM PREFECTURE
WHERE PF_NAME IN ('北海道', '青森県', '岩手県', '宮城県', '福島県')
)AS PF ON DTL.PF_CODE = PF.PF_CODE
GROUP BY DTL.AGE_CODE
ORDER BY AGE_GRP.AGE_CODE ASC;