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