SELECT HP.PF_CODE AS 都道府県コード,
HP.PF_NAME AS 都道府県名,
ROUND(
CAST(HP.INP_YES AS REAL) /
CAST(HP.INP_YES + HP.INP_NO + HP.UNIDENTIFIED)
* 100
) AS 入院率,
FROM HOSPITALIZATION AS HP 
INNER JOIN HOSPITALIZATION PREFECTURE AS PF
ON HP.PF_CODE = PF.PF_CODE
ODER BY
入院率 DESC,
HP.PF_CODE ASC;