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  • 595. Big Countries (Easy)

    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      |
    +--------------+-------------+--------------+
    SELECT
        name, population, area
    FROM
        world
    WHERE
        area > 3000000 OR population > 25000000
    ;
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  • 原文地址:https://www.cnblogs.com/yancea/p/7507511.html
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