select
  *
from
(
select
  std.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 as std
left join PREFECTURE as pf on std.PF_CODE = pf.PF_CODE
left join AGE_GRP as ag on std.AGE_CODE = ag.AGE_CODE
group by std.AGE_CODE, AGE_NAME having pf.PF_NAME in ("北海道", "青森県", "岩手県", "宮城県", "福島県")
)
where 年齢階層名 is not null
-- order by std.AGE_CODE asc
order by 年齢コード asc