SELECT
    SLEEP_TIME_DTL.AGE_CODE AS 年齢コード,
    AGE_GRP.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
    LEFT JOIN
        PREFECTURE
        ON
            SLEEP_TIME_DTL.PF_CODE = PREFECTURE.PF_CODE
    LEFT JOIN
        AGE_GRP
        ON
        SLEEP_TIME_DTL.AGE_CODE = AGE_GRP.AGE_CODE
WHERE
    PF_NAME = 北海道
GROUP BY
    SLEEP_TIME_DTL.AGE_CODE
ORDER BY
    SLEET_TIME_DTL.AGE_CODE