SELECT
    AG.AGE_CODE AS `年齢コード`,
    AG.AGE_NAME AS `年齢階層名`,
    SUM(STD.SP_TIME_5) AS  `5時間未満`,
    SUM(STD.SP_TIME_6) AS `5時間以上6時間未満`,
    SUM(STD.SP_TIME_7) AS `6時間以上7時間未満`,
    SUM(STD.SP_TIME_8) AS `7時間以上8時間未満`,
    SUM(STD.SP_TIME_9) AS `8時間以上9時間未満`,
    SUM(STD.SP_TIME_9OVER) AS `9時間以上`
FROM
    AGE_GRP AS AG
LEFT JOIN SLEEP_TIME_DTL AS STD
        ON AG.AGE_CODE = STD.AGE_CODE
GROUP BY
    AG.AGE_CODE
ORDER BY
    AG.AGE_CODE ASC