Subqueries and JOINs - Exercises

Contest details

The contest is active until: 00:00 30.6.2025

Problems for exercises and homework for the "Databases and SQL" course from the official "Applied Programmer" curriculum.

Allowed languages: | SQL Server prepare DB & run queries |

Contest participants: 23

Practice participants: 69

Problems

Employee Address

Employee Departments

Employees Without Projects

Employees With Project

Employee 24

Employee Manager

Highest Peaks in Bulgaria

Count Mountain Ranges

Countries With or Without Rivers

Continents and Currencies

Countries Without any Mountains

Highest Peak and Longest River by Country

Highest Peak Name and Elevation by Country

Compete

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