HackerRank SQL Certification Solutions

HackerRank SQL certification solutions

We’ve compiled up-to-date SQL certification solutions from the web and GitHub, covering all HackerRank challenges from basic to intermediate and advanced . Updated December 2024, with new solutions added regularly.

SQL Intermediate Certification Solutions

Need help with HackerRank SQL Intermediate Certification Solutions? Here’s a fresh batch of answers as of January 2025. It covers the most common challenges, with more being added regularly.

Customer Information with Country Codes solved in SQL

50

The SQL script is about retrieving customer information along with their respective country codes.
Quarterly Transaction Volumes by Algorithm SQL

99

The SQL script calculates the total transaction volume for each cryptocurrency algorithm for each quarter of 2020.
Products Without Sales SQL Certification

154

The problem is about finding products that have not been sold.
Invoices per Country SQL Certification

60

The SQL script calculates the total number of customers and the average total price of invoices per country.

SQL Advanced Certification Solutions

This collection of HackerRank SQL Advanced Certification Solutions was updated in January 2025. It includes answers for advanced challenges, with more added over time.