这里有张 World 表
- +-----------------+------------+------------+--------------+---------------+
- | 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 |
- +-----------------+------------+------------+--------------+---------------+
如果一个国家的面积超过 300 万平方公里, 或者人口超过 2500 万, 那么这个国家就是大国家.
编写一个 SQL 查询, 输出表中所有大国家的名称, 人口和地区.
例如, 根据上表, 我们应该输出:
- +--------------+-------------+--------------+
- | name | population | area |
- +--------------+-------------+--------------+
- | Afghanistan | 25500100 | 652230 |
- | Algeria | 37100000 | 2381741 |
- +--------------+-------------+--------------+
- # Write your MySQL query statement below
- select name,population,area
- from World
- where population>= 25000000 or area>3000000;
来源: http://www.bubuko.com/infodetail-2594433.html