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