with A as (
select
    pf_code,
    sum(case when CATEGORY_CODE='110' then cast(amt as float) else 0.0 end) as N,
    sum(case when CATEGORY_CODE='120' then amt else 0.0 end) as Ndrinked
from
    drink_habits
group by
     pf_code
)
select
    P.PF_CODE as CODE,
    P.PF_NAME as NAME,
    round((A.Ndrinked/A.N)*100,1) as PERCENTAGE
from
    A
    inner join
    PREFECTURE as P
    on A.PF_CODE=P.PF_CODE
ORDER BY
    PERCENTAGE desc,
    cast(CODE as integer) desc