SELECT
    tbl1.AGE_CODE AS 年齢コード
    ,tbl1.AGE_NAME AS 年齢階層名
    ,SUM(tbl2.SP_TIME_5) AS "5時間未満"
    ,SUM(tbl2.SP_TIME_6) AS "5時間以上6時間未満"
    ,SUM(tbl2.SP_TIME_7) AS "6時間以上7時間未満"
    ,SUM(tbl2.SP_TIME_8) AS "7時間以上8時間未満"
    ,SUM(tbl2.SP_TIME_9) AS "8時間以上9時間未満"
    ,SUM(tbl2.SP_TIME_9OVER) AS "9時間以上"
FROM
    AGE_GRP tbl1
INNER JOIN 
    SLEEP_TIME_DTL tbl2
ON
    tbl1.AGE_CODE = tbl2.AGE_CODE
INNER JOIN 
    PREFECTURE tbl3
ON
    tbl2.PF_CODE = tbl3.PF_CODE
WHERE
    tbl3.PF_NAME = "北海道"
    OR tbl3.PF_NAME = "青森県"
    OR tbl3.PF_NAME = "岩手県"
    OR tbl3.PF_NAME = "宮城県"
    OR tbl3.PF_NAME = "福島県"
GROUP BY
    年齢コード