SQL Interview Practice: THE PROVING GROUND
The Proving Ground is where the story stops holding your hand. Timed questions, a countdown, and a submission that either passes or does not.
Mission briefing
The lobby connects three floors of SQL interview practice, fifteen timed problems in total, each styled after questions from real data-analyst screens and tagged with the company that made them famous. Floor 1 gives you five minutes per beginner problem, Floor 2 seven minutes for intermediate work, and Floor 3 ten minutes for advanced analytics.
The countdown is enforced by the server, so switching tabs will not save you. It is the closest thing to interview pressure you can get without a recruiter on the call.
Warm up with the SQL interview questions guide linked below, then pick a floor.
For the full format, timers, and scoring details, see the Interview Mode page.
Related guides
Free guides that pair well with this chapter:
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