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 |
题目大意:
查找World
表中area>3000000或者population>25000000的元组。
解题思路:
最基础的查询。
解题代码:
SELECT name, population, area
FROM World
WHERE area > 3000000 OR population > 25000000
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