Three-Item Combinations
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
- L4
Interview Prompt
Given a table of items with names and costs, produce all unique 3-item combinations. For each combo, concatenate the names alphabetically separated by commas, and sum the costs. Return results ranked by total cost descending, then by name ascending.
Summary
Generate all unique 3-item sets with total cost.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Write your sql solution with real code execution
- Get instant feedback and a hire/no-hire decision