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