SELECT
    AGE_GRP.AGE_CODE AS 年齢コード,
    AGE_NAME AS 年齢階層名,
    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
    JOIN AGE_GRP ON SLEEP_TIME_DTL.AGE_CODE = AGE_GRP.AGE_CODE
    JOIN (
        SELECT PF_CODE, PF_NAME
        FROM PREFECTURE
        WHERE PF_NAME IN ("北海道", "青森県", "岩手県", "宮城県", "福島県")
    ) AS TOHOKU ON SLEEP_TIME_DTL.PF_CODE = TOHOKU.PF_CODE
GROUP BY AGE_GRP.AGE_CODE
ORDER BY 年齢コード;