Getting good at SQL for interviews can feel like a puzzle. You know the basics, but putting them together in a way that impresses people is another thing entirely. Luckily, there are great tools out ...

HackerRank SQL Series Overview This repository contains solutions to SQL problems from HackerRank.Each solution is structured with optimized queries and explanations to help understand fundamental SQL ...

HackerRank is a tech company that focuses on competitive programming challenges for both consumers and businesses, where developers compete by trying to program according to provided specifications.