select
    age.age_name as "年齢階層"
    ,sum(case when sleep.time_code = 120 then target_pop else 0 end) as "5時間未満"
    ,sum(case when sleep.time_code = 130 then target_pop else 0 end) as "5時間以上6時間未満"
    ,sum(case when sleep.time_code = 140 then target_pop else 0 end) as "6時間以上7時間未満"
    ,sum(case when sleep.time_code = 150 then target_pop else 0 end) as "7時間以上8時間未満"
    ,sum(case when sleep.time_code = 160 then target_pop else 0 end) as "8時間以上9時間未満"
    ,sum(case when sleep.time_code = 170 then target_pop else 0 end) as "9時間以上"
    ,sum(case when sleep.time_code = 180 then target_pop else 0 end) as "不詳"
from
    sleep_time_dtl std 
    left join age_grp age on std.age_code = age.age_code
    left join sleep_time sleep on std.time_code = sleep.time_code
group by
    age.age_name
;