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