[LeetCode] 595.Big Countries

[LeetCode] 595.Big Countries

• 题目描述
• 解题思路
• 实验代码

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题目描述

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

解题思路

突然心血来潮做了道SQL的题，之前数据库学过一点点SQL，正好派上用场，就是一个简单的SQL的查询语句。见代码。

实验代码

# Write your MySQL query statement below
select name, population, area
FROM World
WHERE area > 3000000 OR population > 25000000;