Whether you’re just getting in to programming or you’ve avoided learning SQL, it’s something every developer faces eventually. You may not be responsible for building and maintaining a database, but ...

HackerRank isn’t just a random collection of problems; they’ve organized their SQL section pretty well. You can find challenges that cover everything from basic SELECT statements to more involved ...

What’s your average success rate of getting a SQL statement right on the first try? In best case, you botched a simple statement without side effects and just have to try again with correct syntax or ...