Leetcode SQL 50 -- 595. Big Countries

LeetCode > SQL_50 SQL

Created At : 2024-10-23 11:04

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Question
1. Table name: World
2. Big Country
Explaination
Solution

Question

Table name: `World`

Column Name	Type
name	varchar
continent	varchar
area	int
population	int
gdp	bigint

name is the primary key (column with unique values) for this table.

Each row of this table gives information about the name of a country,
the continent to which it belongs, its area, the population, and its GDP value.

Big Country

A country is big if:

it has an area of at least three million (i.e., 3000000 km2), or
it has a population of at least twenty-five million (i.e., 25000000).

Write a solution to find the name, population, and area of the big countries.
Return the result table in any order.

Explaination

Again we use SELECT <column_name> FROM <table_name> WHERE <conditions> to get the solution.

As question mention we should use OR and at least refers to >=.

Solution

SELECT name, population, area 
FROM World 
WHERE area >= 3000000 OR population >= 25000000;