SELECT
    AGE_GRP.AGE_NAME AS "年齢階層"
    , SUM(CASE WHEN SLEEP_TIME_DTL.TIME_CODE = 120 THEN 1 ELSE 0 END) AS "5時間未満"
    , SUM(CASE WHEN SLEEP_TIME_DTL.TIME_CODE = 130 THEN 1 ELSE 0 END) AS "5時間以上6時間未満"
    , SUM(CASE WHEN SLEEP_TIME_DTL.TIME_CODE = 140 THEN 1 ELSE 0 END) AS "6時間以上7時間未満"
    , SUM(CASE WHEN SLEEP_TIME_DTL.TIME_CODE = 150 THEN 1 ELSE 0 END) AS "7時間以上8時間未満"
    , SUM(CASE WHEN SLEEP_TIME_DTL.TIME_CODE = 160 THEN 1 ELSE 0 END) AS "8時間以上9時間未満"
    , SUM(CASE WHEN SLEEP_TIME_DTL.TIME_CODE = 170 THEN 1 ELSE 0 END) AS "9時間以上"
    , SUM(CASE WHEN SLEEP_TIME_DTL.TIME_CODE = 180 THEN 1 ELSE 0 END) AS "不詳"
FROM
    AGE_GRP
    LEFT JOIN
        SLEEP_TIME_DTL
        USING (AGE_CODE)
GROUP BY
    AGE_GRP.AGE_NAME
ORDER BY
    AGE_GRP.AGE_CODE