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