-- select `CPU Type`, 
-- count(case when `GPU Type` = 'GPU A' then 1 end) `GPU A`,
-- count(case when `GPU Type` = 'GPU B' then 1 end) `GPU B`,
-- count(case when `GPU Type` = 'GPU C' then 1 end) `GPU C`,
-- count(case when `GPU Type` = 'GPU D' then 1 end) `GPU D`,
-- count(case when `GPU Type` = 'GPU E' then 1 end) `GPU E`
-- from yourtable 
-- group by `CPU Type`
select
    a.age_name as 年齢階層,
    sum(case when s.time_code = 120 then s.target_pop end) as "5時間未満",
    sum(case when s.time_code = 130 then s.target_pop end) as "5時間以上6時間未満",
    sum(case when s.time_code = 140 then s.target_pop end) as "6時間以上7時間未満",
    sum(case when s.time_code = 150 then s.target_pop end) as "7時間以上8時間未満",
    sum(case when s.time_code = 160 then s.target_pop end) as "8時間以上9時間未満",
    sum(case when s.time_code = 170 then s.target_pop end) as "9時間以上",
    sum(case when s.time_code = 180 then s.target_pop end) as "不詳"
from sleep_time_dtl as s
inner join
    age_grp a on s.age_code = a.age_code
group by s.age_code