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Deduplicate and Keep Latest

A medium SQL mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.

Domain
SQL
Difficulty
medium
Seniority
senior

Interview Prompt

Given a server_logs table with server_name, message, and log_timestamp, write a query to deduplicate by keeping only the most recent row per (server_name, message) combination. Then filter to only rows from the last 7 days. Return all columns.

How This Interview Works

  1. Read the vague prompt (just like a real interview)
  2. Ask clarifying questions to the AI interviewer
  3. Write your sql solution with real code execution
  4. Get instant feedback and a hire/no-hire decision