select A.PF_CODE AS 都道府県コード
    ,PF_NAME AS 都道府県名
    ,ROUND((CAST(INP_YES AS REAL)/CAST(INP_YES + INP_NO + UNIDENTIFIED AS REAL))*100,1) AS 入院率
from PREFECTURE AS A
inner join HOSPITALIZATION AS B
on A.PF_CODE = B.PF_CODE
ORDER BY 入院率 desc, 都道府県コード;