select 
 a.PF_CODE as 都道府県コード
,a.PF_NAME as 都道府県名
,round((cast(INP_YES as REAL)/cast(INP_YES+INP_NO+UNIDENTIFIED as REAL))*100,2) as 入院率
from PREFECTURE a
left join HOSPITALIZATION b
on a.PF_CODE = b.PF_CODE
order by 入院率 desc, 都道府県コード asc