select sleep_time_dtl.age_code as 年齢コード,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 inner join age_grp on sleep_time_dtl.age_code = age_grp.age_code 
inner join prefecture on prefecture.pf_code = sleep_time_dtl.pf_code
where  prefecture.PF_NAME IN ('北海道', '青森県', '岩手県', '宮城県', '福島県')
group by 年齢コード