SELECT
    tbl1.AGE_CODE AS 年齢コード
    ,tbl1.AGE_NAME AS 年齢階層名
    ,tbl2.SP_TIME_5 AS "5時間未満"
    ,tbl2.SP_TIME_6 AS "5時間以上6時間未満"
    ,tbl2.SP_TIME_7 AS "6時間以上7時間未満"
    ,tbl2.SP_TIME_8 AS "7時間以上8時間未満"
    ,tbl2.SP_TIME_9 AS "8時間以上9時間未満"
    ,tbl2.SP_TIME_9OVER AS "9時間以上"
FROM
    AGE_GRP tbl1
INNER JOIN 
    SLEEP_TIME_DTL tbl2
ON
    tbl1.AGE_CODE = tbl2.AGE_CODE
GROUP BY
    年齢コード