SELECT 
   PR.PF_CODE AS 都道府県コード, 
   PR.PF_NAME AS 都道府県名,
   PO.TOTAL_AMT AS 総人口2015年,
   PO2020.TOTAL_AMT AS 総人口2020年,
   ROUND(CAST(PO2020.TOTAL_AMT AS FLOAT)/ CAST(PO.TOTAL_AMT AS FLOAT) * 100) AS 人口増加率
FROM POPU_TRANSITION AS PO
JOIN PREFECTURE AS PR
ON PO.PF_CODE = PR.PF_CODE
JOIN POPU_TRANSITION AS PO2020
ON PO.PF_CODE = PO2020.PF_CODE
AND PO2020.SURVEY_YEAR = 2020
WHERE PO.SURVEY_YEAR = 2015
AND 総人口2015年 < 総人口2020年
ORDER BY 人口増加率 DESC,
         都道府県コード ASC
;