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 float )/(HOSPITALIZATION.INP_YES + HOSPITALIZATION.INP_NO + HOSPITALIZATION.UNIDENTIFIED))*100,1) AS 入院率
FROM HOSPITALIZATION
LEFT JOIN PREFECTURE ON PREFECTURE.PF_CODE = HOSPITALIZATION.PF_CODE
ORDER BY 入院率 DESC,PREFECTURE.PF_CODE ASC;