SELECT
    a.age_code as "年齢コード",
    a.age_name as "年齢階層名",
    SUM(std.sp_time_5) as "5時間未満",
    SUM(std.sp_time_6) as "5時間以上6時間未満",
    SUM(std.sp_time_7) as "6時間以上7時間未満",
    SUM(std.sp_time_8) as "7時間以上8時間未満",
    SUM(std.sp_time_9) as "8時間以上9時間未満",
    SUM(std.sp_time_9over) as "9時間以上"
FROM SLEEP_TIME_DTL std
JOIN prefecture p
ON p.pf_code=std.pf_code
JOIN age_grp a 
ON a.age_code=std.age_code
WHERE p.pf_name IN ("北海道", "青森県", "岩手県", "宮城県", "福島県")
GROUP BY a.age_code
ORDER BY a.age_code;