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