SELECT 
    H.PF_CODE AS 都道府県コード,
    P.PF_NAME AS 都道府県名,
    100*INP_YES/(INP_YES+INP_NO+UNIDENTIFIED) AS 入院率
FROM HOSPITALIZATION AS H
LEFT JOIN PREFECTURE AS P ON H.PF_CODE = P.PF_CODE
ORDER BY 100*INP_YES/(INP_YES+INP_NO+UNIDENTIFIED) ASC;