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