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 |
+--------------+-------------+--------------+
题目描述：利用 sql 语句查询我们需要的结果
题目分析：简单的 sql 语句，算是入门级的，相信稍微学过一点 mysql 查询的都知道怎么写。直接查询我们需要的参数 name, population, area，从 world 表单中，条件是area > 3000000 或 population > 25000000 。
MySQL 语句如下：
# Write your MySQL query statement below
SELECT
name, population, area
FROM
world
WHERE
area > 3000000 OR population > 25000000
;