select 
    HOSPITALIZATION.PF_CODE as 都道府県コード
    , PREFECTURE.PF_NAME as 都道府県名
    , round(cast(INP_YES as real) / cast(INP_YES + INP_NO + UNIDENTIFIED as real), 2) as 入院率
from HOSPITALIZATION
  inner join PREFECTURE on HOSPITALIZATION.PF_CODE = PREFECTURE.PF_CODE
order by 入院率 desc, 都道府県コード