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) * 100 /
        CAST((HP.INP_YES + HP.INP_NO	+ HP.UNIDENTIFIED) AS REAL)
        , 1)
    AS 入院率

FROM
    HOSPITALIZATION AS HP
    INNER JOIN PREFECTURE AS PF
        ON HP.PF_CODE = PF.PF_CODE

ORDER BY
    入院率 DESC