SELECT
    PREFECTURE.PF_CODE AS 都道府県コード,
    PF_NAME AS 都道府県名,
    ROUND((INP_YES * 100.0) / (INP_YES + INP_NO + UNIDENTIFIED), 1) AS 入院率
FROM
    PREFECTURE
LEFT OUTER JOIN
    HOSPITALIZATION
ON
    PREFECTURE.PF_CODE = HOSPITALIZATION.PF_CODE
ORDER BY
    入院率 DESC, 都道府県コード
;