SELECT DISTINCT
    AGE_GRP.AGE_CODE AS 年齢コード,
    AGE_GRP.AGE_NAME AS 年齢階層,
    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 AGE_GRP.AGE_CODE = SLEEP_TIME_DTL.AGE_CODE
INNER JOIN PREFECTURE ON PREFECTURE.PF_CODE = SLEEP_TIME_DTL.PF_CODE

GROUP BY AGE_GRP.AGE_CODE

ORDER BY AGE_GRP.AGE_CODE ASC;