SELECT
    HP.PF_CODE AS 都道府県コード
    , PF.PF_NAME AS 都道府県名
    , round(HP.INP_YES*100.0/(HP.INP_YES +HP.INP_NO+HP.UNIDENTIFIED),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;