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 ...

The following challenges all revolve around simple SELECT statements that make use of SELECT, FROM, WHERE, and ORDER BY. The WHERE clauses will use and three basic boolean operators as well as some of ...

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.

Here are the 4 questions asked in HackerRank SQL Basic Certification Exam, from these 2 will be available in one attempt. SELECT ei.employee_ID, ei.name FROM employee_information ei JOIN ...

Here are the 4 questions asked in HackerRank SQL Basic Certification Exam, from these 2 will be available in one attempt. Student analysis SQL… ...