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