Consistent SQL practice across varied platforms builds real job-ready confidence. Guided lessons help beginners, while timed challenges sharpen interview performance. Real datasets improve practical ...

Thinking about getting into coding or leveling up your skills? You’ve probably heard of HackerRank. It’s a big name in the tech world for practice and hiring. But the big question on a lot of people’s ...

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 ...

To execute a query under the cursor or selected text, press Ctrl+Enter or right-click the query and click Execute-> Execute SQL Statement on the context menu. You can do the same using the main ...

SQL skills are essential for high-demand roles like data analyst, business analyst, data scientist, software developer, and database administrator. Mastering SQL enables professionals to efficiently ...

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.

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 ...

Forbes contributors publish independent expert analyses and insights. I write about tech companies, careers, and in-demand skills. Dec 08, 2016, 12:47pm EST Dec 08, 2016, 12:48pm EST This article is ...