select
SLEEP_TIME_DTL.AGE_CODE AS 年齢コード,
AGE_GRP.AGE_NAME AS 年齢階層名,
SUM(SLEEP_TIME_DTL.SP_TIME_5) AS "5時間未満" ,
SUM(SLEEP_TIME_DTL.SP_TIME_6) AS "5時間以上6時間未満" ,
SUM(SLEEP_TIME_DTL.SP_TIME_7) AS "6時間以上7時間未満" ,
SUM(SLEEP_TIME_DTL.SP_TIME_8) AS "7時間以上8時間未満" ,
SUM(SLEEP_TIME_DTL.SP_TIME_9) AS "8時間以上9時間未満" ,
SUM(SLEEP_TIME_DTL.SP_TIME_9OVER) AS "9時間以上" 

FROM
    SLEEP_TIME_DTL 
    INNER JOIN AGE_GRP 
        ON AGE_GRP.AGE_CODE = SLEEP_TIME_DTL.AGE_CODE
    INNER JOIN PREFECTURE
        ON SLEEP_TIME_DTL.PF_CODE  = PREFECTURE.PF_CODE 
WHERE
   PREFECTURE.PF_NAME IN ('北海道', '青森県', '岩手県', '宮城県', '福島県')
GROUP BY
    SLEEP_TIME_DTL.AGE_CODE 
ORDER BY
    SLEEP_TIME_DTL.AGE_CODE ASC;