select
    HO.PF_CODE AS 都道府県コード
    ,PF.PF_NAME AS 都道府県名
    , ROUND(
            CAST(HO.INP_YES AS REAL) / 
            CAST( (HO.INP_YES + HO.INP_NO + HO.UNIDENTIFIED) AS REAL) * 100 , -1
            ) AS 入院率
FROM HOSPITALIZATION AS HO
 INNER JOIN PREFECTURE AS PF
    ON HO.PF_CODE = PF.PF_CODE
ORDER BY 
入院率 DESC, HO.PF_CODE ASC;