SELECT
    PREFECTURE.PF_CODE AS 都道府県コード,
    PREFECTURE.PF_NAME AS 都道府県名,
    ROUND((0.0 + HOSPITALIZATION.INP_YES) / (HOSPITALIZATION.INP_YES + HOSPITALIZATION.INP_NO + HOSPITALIZATION.UNIDENTIFIED), 2) AS 入院率
FROM HOSPITALIZATION
INNER JOIN PREFECTURE ON PREFECTURE.PF_CODE = HOSPITALIZATION.PF_CODE
ORDER BY 入院率 DESC
;