SELECT PR.PF_CODE AS 都道府県コード
,PR.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)*100,0) 人口増加率
FROM POPU_TRANSITION AS PT
LEFT JOIN PREFECTURE AS PR
ON PT.PF_CODE =PR.PF_CODE 
INNER JOIN POPU_TRANSITION AS PT2020
ON PT2020.PF_CODE =PT.PF_CODE 
AND PT2020.SURVEY_YEAR='2020'
WHERE 1=1
AND PT.SURVEY_YEAR='2015'
AND PT2020.TOTAL_AMT>PT.TOTAL_AMT
--GROUP BY
ORDER BY 人口増加率 desc,
都道府県コード asc;