SELECT
  HOSPITALIZATION.PF_CODE AS 都道府県コード,
  PREFECTURE.PF_NAME AS 都道府県名,  
  ROUND(100 * CAST(INP_YES AS REAL) / CAST(INP_YES+INP_NO+UNIDENTIFIED AS REAL), 1) AS 入院率
FROM 
  HOSPITALIZATION
INNER JOIN
  PREFECTURE
ON
  HOSPITALIZATION.PF_CODE = PREFECTURE.PF_CODE
ORDER BY
  入院率 DESC,
  都道府県コード