🎓 Verified and optimized solutions to the HackerRank SQL Certification Test — covering Basic, Intermediate, and Advanced levels. Ideal for certification preparation, SQL interview practice, and MySQL ...

My journey of earning a SQL certification and tackling HackerRank SQL challenges. It showcases my growth, challenges faced, and solutions offered. Explore my GitHub repository to learn from my ...

Here are the 2 questions asked in HackerRank SQL Intermediate Certification Exam, these 2 will be available in one attempt. The questions asked are Invoices Per Country and Product Sales Per City ...