select
    a.age_code as "年齢コード",
    a.age_name as "年齢階層名",
    sum(s.sp_time_5) as "5時間未満",
    sum(s.sp_time_6) as "5時間以上6時間未満",
    sum(s.sp_time_7) as "6時間以上7時間未満",
    sum(s.sp_time_8) as "7時間以上8時間未満",
    sum(s.sp_time_9) as "8時間以上9時間未満",
    sum(s.sp_time_9over) as "9時間以上"
from
    sleep_time_dtl s 
left outer join age_grp a on s.age_code = a.age_code
left outer join prefecture p on s.pf_code = p.pf_code
where
    p.pf_name in ('北海道', '青森', '岩手県', '宮城県', '福島県')
and
    a.age_code is not null
group by
    a.age_code, a.age_name
order by
    a.age_code
;