Weekend Warriors

An easy SQL mock interview question on DataDriven, with an AI interviewer who asks follow-up questions and a hire or no-hire decision at the end.

Domain
SQL
Difficulty
easy
Seniority
L3

Interview Prompt

`event_data` holds one row per app event, each with its `event_type` and the `event_timestamp` it happened at. For every event type, show how many of its events were on a weekend and how many were on a weekday, as two counts side by side, most weekend events first.

Summary

Weekdays vs. weekends. When does the action really happen?

How This Interview Works

  1. Read the vague prompt (just like a real interview)
  2. Ask clarifying questions to the AI interviewer
  3. Write and run your SQL against a real database
  4. Answer the interviewer's follow-up questions, then get a hire or no-hire decision