Daily Error Count Change
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
SRE wants a daily trend chart for error volume. For each day errors were recorded, show the number of errors that landed that day, how many landed the day before, and how much it moved. Order from earliest day to latest. The first day on record has no prior day to compare against.
Summary
Errors, trending up or down?
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