SELECT
PT.PF_CODE AS 都道府県コード
,PF.PF_NAME AS 都道府県名
,PT.TOTAL_AMT AS 総人口2015年
,PT2020.TOTAL_AMT AS 総人口2020年
,ROUND(
CAST(PT2020.TOTAL_AMT AS REAL) / 
CAST(PT.TOTAL_AMT AS REAL)*100
)
AS 人口増加率
FROM POPU_TRANSITION AS PT
INNER JOIN
PREFECTURE AS PF
ON PT.PF_CODE = PF.PF_CODE
INNER JOIN
POPU_TRANSITION AS PT2020
ON PT.PF_CODE = PT2020.PF_CODE
AND PT2020.SURVEY_YEAR = 2020
WHERE PT.SURVEY_YEAR = 2015
AND PT2020.TOTAL_AMT >= PT.TOTAL_AMT
ORDER BY 人口増加率 DESC,PT.PF_CODE ASC;