SELECT 
    PREFECTURE.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) / 
        CAST((HOSPITALIZATION.INP_YES + HOSPITALIZATION.INP_NO + HOSPITALIZATION.UNIDENTIFIED) AS REAL)* 100, 2) AS 入院率
FROM PREFECTURE
INNER JOIN HOSPITALIZATION
    ON PREFECTURE.PF_CODE = HOSPITALIZATION.PF_CODE
ORDER BY 入院率 DESC, 都道府県コード ASC