SELECT
    DISTRICT_CODE AS '地区コード',
    DISTRICT_NAME AS '地区名',
    TOTAL_AMT AS '総人口'
FROM
    POPULATION
ORDER BY
    TOTAL_AMT DESC
;

SELECT
    DISTRICT_CODE AS '地区コード',
    DISTRICT_NAME AS '地区名',
    TOTAL_AMT AS '総人口'
FROM
    POPULATION
ORDER BY
    DISTRICT_CODE ASC
;