SELECT
    AGE_NAME AS 年齢階層,
    CASE WHEN STD.TIME_CODE = 120 THEN COUNT(STD.AGE_CODE) END AS '5時間未満',
    CASE WHEN STD.TIME_CODE = 130 THEN COUNT(STD.AGE_CODE) END AS '5時間以上6時間未満',
    CASE WHEN STD.TIME_CODE = 140 THEN COUNT(STD.AGE_CODE) END AS '6時間以上7時間未満',
    CASE WHEN STD.TIME_CODE = 150 THEN COUNT(STD.AGE_CODE) END AS '7時間以上8時間未満',
    CASE WHEN STD.TIME_CODE = 160 THEN COUNT(STD.AGE_CODE) END AS '8時間以上9時間未満',
    CASE WHEN STD.TIME_CODE = 170 THEN COUNT(STD.AGE_CODE) END AS '9時間以上',
    CASE WHEN STD.TIME_CODE = 180 THEN COUNT(STD.AGE_CODE) END AS '不詳'
FROM
    SLEEP_TIME_DTL AS STD
LEFT JOIN 
    SLEEP_TIME AS ST ON ST.TIME_CODE = STD.TIME_CODE
LEFT JOIN 
    AGE_GRP AS AG ON AG.AGE_CODE = STD.AGE_CODE
GROUP BY
    STD.AGE_CODE, STD.TIME_CODE
ORDER BY
    STD.AGE_CODE
;