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IshaSQL

Foundations Track · Easy · 15 min

Big Countries

Table: World +-------------+---------+ | Column Name | Type | +-------------+---------+ | name | varchar | | continent | varchar | | area | int | | populatio...

Foundations Track
Easy
15 min
filtering

Company labels are directional practice context, not official interview guidance.

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Objective

Practice filtering through a IshaSQL-tagged business scenario.

Approach

Use this track to lock in clean query structure, basic filtering logic, and confidence with grouped output.

Company context

Company labels are directional practice context, not official interview guidance.

Prereq: query basics

Table: 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. A country is big if: it has an area of at least three million (i.e., 3000000 km 2 ), 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 . The result format is in the following example. Example 1: Input: World table: +-------------+-----------+---------+------------+--------------+ | name | continent | area | population | gdp | +-------------+-----------+---------+------------+--------------+ | Afghanistan | Asia | 652230 | 25500100 | 20343000000 | | Albania | Europe | 28748 | 2831741 | 12960000000 | | Algeria | Africa | 2381741 | 37100000 | 188681000000 | | Andorra | Europe | 468 | 78115 | 3712000000 | | Angola | Africa | 1246700 | 20609294 | 100990000000 | +-------------+-----------+---------+------------+--------------+ Output: +-------------+------------+---------+ | name | population | area | +-------------+------------+---------+ | Afghanistan | 25500100 | 652230 | | Algeria | 37100000 | 2381741 | +-------------+------------+---------+

World
name VARCHAR(255
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