Subqueries and Joins

Problems

01. Employee Address

Problem Descriptions

Databases

02. Addresses with Towns

03. Sales Employees

04. Employee Departments

05. Employees Without Projects

06. Employees Hired After

07. Employees With Project

08. Employee 24

09. Employee Manager

10. Employees Summary

11. Min Average Salary

12. Highest Peaks in Bulgaria

13. Count Mountain Ranges

14. Countries With or Without Rivers

15. Continents and Currencies

16. Countries Without any Mountains

17. Highest Peak and Longest River by Country

18. Highest Peak Name and Elevation by Country