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