-- CASE WHEN 条件 THEN 値 ELSE 0 END
select
    agp.AGE_NAME as "年齢階層",
    -- sum(std.TARGET_POP) <- 多分これ
    sum(CASE WHEN std.TIME_CODE = 120 THEN std.TARGET_POP ELSE 0 END) as "5時間未満",
    sum(CASE WHEN std.TIME_CODE = 130 THEN std.TARGET_POP ELSE 0 END) as "5時間以上6時間未満",
    sum(CASE WHEN std.TIME_CODE = 140 THEN std.TARGET_POP ELSE 0 END) as "6時間以上7時間未満",
    sum(CASE WHEN std.TIME_CODE = 150 THEN std.TARGET_POP ELSE 0 END) as "7時間以上8時間未満",
    sum(CASE WHEN std.TIME_CODE = 160 THEN std.TARGET_POP ELSE 0 END) as "8時間以上9時間未満",
    sum(CASE WHEN std.TIME_CODE = 170 THEN std.TARGET_POP ELSE 0 END) as "9時間以上",
    sum(CASE WHEN std.TIME_CODE = 180 THEN std.TARGET_POP ELSE 0 END) as "不詳"
from
    SLEEP_TIME_DTL as std
inner join
    AGE_GRP as agp
on
    std.AGE_CODE = agp.AGE_CODE
group by agp.AGE_CODE
order by agp.AGE_CODE asc;