HackerRank SQL

This repository contains solutions to Hackerrank practice problems with SQL.

Take a look, play and have fun with this.
Stars are welcome · Report a bug · Request a feature

💪 Exercices

Subdomain	Challenge	Score	Difficulty	Solution
Basic Select	Revising the Select Query I	10	Easy	Solution.sql
Basic Select	Revising the Select Query II	10	Easy	Solution.sql
Basic Select	Select All	10	Easy	Solution.sql
Basic Select	Select By ID	10	Easy	Solution.sql
Basic Select	Japanese Cities' Attributes	10	Easy	Solution.sql
Basic Select	Japanese Cities' Names	10	Easy	Solution.sql
Basic Select	Weather Observation Station 1	15	Easy	Solution.sql
Basic Select	Weather Observation Station 2	15	Easy	Solution.sql
Basic Select	Weather Observation Station 3	10	Easy	Solution.sql
Basic Select	Weather Observation Station 4	10	Easy	Solution.sql
Basic Select	Weather Observation Station 5	30	Easy	Solution.sql
Basic Select	Weather Observation Station 6	10	Easy	Solution.sql
Basic Select	Weather Observation Station 7	10	Easy	Solution.sql
Basic Select	Weather Observation Station 8	15	Easy	Solution.sql
Basic Select	Weather Observation Station 9	10	Easy	Solution.sql
Basic Select	Weather Observation Station 10	10	Easy	Solution.sql
Basic Select	Weather Observation Station 11	15	Easy	Solution.sql
Basic Select	Weather Observation Station 12	15	Easy	Solution.sql
Basic Select	Higher Than 75 Marks	15	Easy	Solution.sql
Basic Select	Employee Names	10	Easy	Solution.sql
Basic Select	Employee Salaries	10	Easy	Solution.sql
Advanced Select	Type of Triangle	20	Easy	Solution.sql
Advanced Select	The PADS	30	Medium	Solution.sql
Advanced Select	Binary Tree Nodes	30	Medium	Solution.sql
Advanced Select	New Companies	30	Medium	Solution.sql
Advanced Select	Occupations	30	Medium	Solution.sql
Aggregation	Revising Aggregations - The Count Function	10	Easy	Solution.sql
Aggregation	Revising Aggregations - The Sum Function	10	Easy	Solution.sql
Aggregation	Revising Aggregations - Averages	10	Easy	Solution.sql
Aggregation	Average Population	10	Easy	Solution.sql
Aggregation	Japan Population	10	Easy	Solution.sql
Aggregation	Population Density Difference	10	Easy	Solution.sql
Aggregation	The Blunder	15	Easy	Solution.sql
Aggregation	Top Earners	20	Easy	Solution.sql
Aggregation	Weather Observation Station 2	15	Easy	Solution.sql
Aggregation	Weather Observation Station 13	10	Easy	Solution.sql
Aggregation	Weather Observation Station 14	10	Easy	Solution.sql
Aggregation	Weather Observation Station 15	15	Easy	Solution.sql
Aggregation	Weather Observation Station 16	10	Easy	Solution.sql
Aggregation	Weather Observation Station 17	15	Easy	Solution.sql
Aggregation	Weather Observation Station 18	25	Medium	Solution.sql
Aggregation	Weather Observation Station 19	30	Medium	Solution.sql
Aggregation	Weather Observation Station 20	40	Medium	Solution.sql
Basic Join	Population Census	10	Easy	Solution.sql
Basic Join	African Cities	10	Easy	Solution.sql
Basic Join	Average Population of Each Continent	10	Easy	Solution.sql
Basic Join	The Report	20	Medium	Solution.sql
Basic Join	Top Competitors	30	Medium	Solution.sql
Basic Join	Ollivander's Inventory	30	Medium	Solution.sql
Basic Join	Challenges	30	Medium	Solution.sql
Basic Join	Contest Leaderboard	30	Medium	Solution.sql
Alternative Queries	Draw The Triangle 1	25	Easy	Solution.sql
Alternative Queries	Draw The Triangle 2	25	Easy	Solution.sql

👤 Author

Moisés Cedeño

• Email: [email protected]
• Github: @modavidc

🤝 Contributing

Contributions, issues and feature requests are welcome.
Feel free to check issues page if you want to contribute.

🧑 Credits:

• Sql icons created by Pixel perfect - Flaticon

📝 License

Copyright © 2022 Moisés Cedeño.
This project is MIT licensed.

---

This README was generated with ❤️ by readme-md-generator