SELECT
 AGE_GRP.AGE_CODE AS '年齢コード',
 AGE_GRP.AGE_NAME AS '年齢階層名',
 SUM(SLEEP_TIME_DTL.SP_TIME_5) AS '5時間未満',
 SUM(SLEEP_TIME_DTL.SP_TIME_6) AS '5時間以上6時間未満',
 SUM(SLEEP_TIME_DTL.SP_TIME_7) AS '6時間以上7時間未満',
 SUM(SLEEP_TIME_DTL.SP_TIME_8) AS '7時間以上8時間未満',
 SUM(SLEEP_TIME_DTL.SP_TIME_9) AS '8時間以上9時間未満',
 SUM(SLEEP_TIME_DTL.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 (
  SELECT
   PF_CODE
  FROM PREFECTURE
  WHERE PREFECTURE.PF_NAME IN ('北海道','青森県','岩手県','宮城県','福島県')
  ) WK ON SLEEP_TIME_DTL.PF_CODE=WK.PF_CODE
GROUP BY AGE_GRP.AGE_CODE,AGE_GRP.AGE_NAME
ORDER BY AGE_GRP.AGE_CODE;