select
    std.age_code as 年齢コード,
    ag.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 as std
    inner join 
        age_grp as ag
        on std.age_code = ag.age_code
    inner join
        prefecture as pr
        on std.pf_code = pr.pf_code
where
    pr.pf_name in ("北海道", "青森県", "岩手県", "宮城県", "福島県")
group by
    std.age_code
order by
    std.age_code asc