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  • 595. Big Countries

    SQL Schema

    There is a table World

    +-----------------+------------+------------+--------------+---------------+
    | name | continent | area | population | gdp |
    +-----------------+------------+------------+--------------+---------------+
    | Afghanistan | Asia | 652230 | 25500100 | 20343000 |
    | Albania | Europe | 28748 | 2831741 | 12960000 |
    | Algeria | Africa | 2381741 | 37100000 | 188681000 |
    | Andorra | Europe | 468 | 78115 | 3712000 |
    | Angola | Africa | 1246700 | 20609294 | 100990000 |
    +-----------------+------------+------------+--------------+---------------+

    A country is big if it has an area of bigger than 3 million square km or a population of more than 25 million.

    Write a SQL solution to output big countries' name, population and area.

    For example, according to the above table, we should output:

    +--------------+-------------+--------------+
    | name | population | area |
    +--------------+-------------+--------------+
    | Afghanistan | 25500100 | 652230 |
    | Algeria | 37100000 | 2381741 |
    +--------------+-------------+--------------+

    # Write your MySQL query statement below
    select name, population, area from World
    where area > 3000000 or population > 25000000;
    
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  • 原文地址:https://www.cnblogs.com/bernieloveslife/p/9744712.html
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