select 
  h.PF_CODE as 都道府県コード,
  p.PF_NAME as 都道府県名,
  round(
    cast(h.INP_YES as float) / cast(h.INP_YES + h.INP_NO + h.UNIDENTIFIED as float) * 100,
    1
    ) as 入院率
from HOSPITALIZATION as h
left join PREFECTURE as p
on h.PF_CODE = p.PF_CODE
order by 入院率 desc;