52 lines
1.7 KiB
Markdown
52 lines
1.7 KiB
Markdown
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## 每日一题 - Big Countries
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### 信息卡片
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- 时间：2019-06-19
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- 题目链接：https://leetcode.com/problems/big-countries/
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- tag：`sql`
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### 题目描述
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```
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There is a table World
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+-----------------+------------+------------+--------------+---------------+
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| name | continent | area | population | gdp |
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+-----------------+------------+------------+--------------+---------------+
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| Afghanistan | Asia | 652230 | 25500100 | 20343000 |
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| Albania | Europe | 28748 | 2831741 | 12960000 |
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| Algeria | Africa | 2381741 | 37100000 | 188681000 |
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| Andorra | Europe | 468 | 78115 | 3712000 |
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| Angola | Africa | 1246700 | 20609294 | 100990000 |
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+-----------------+------------+------------+--------------+---------------+
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A country is big if it has an area of bigger than 3 million square km or a population of more than 25 million.
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Write a SQL solution to output big countries' name, population and area.
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For example, according to the above table, we should output:
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+--------------+-------------+--------------+
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| name | population | area |
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+--------------+-------------+--------------+
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| Afghanistan | 25500100 | 652230 |
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| Algeria | 37100000 | 2381741 |
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+--------------+-------------+--------------+
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```
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### 参考答案
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最基本的sql语句，没什么好讲的。 如果不会的话，说明对基础语法不熟。
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参考代码：
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```sql
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select name, population, area from World where area > 3000000 or population > 25000000
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```
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### 其他优秀解答
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```
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暂无
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```
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