Extract Deploy Versions
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
The release team wants to compare version strings numerically, but each deploy log records the version with a leading 'v' and dots or dashes between the parts, like 'v1.2-3'. The environment label is entered inconsistently across the table, so consider only the rows whose environment reads exactly 'staging' in lowercase. For those rows, drop the 'v' prefix and the dot and dash separators so the remaining digits run together, and return that value as an integer beside the service name.
Summary
The version number is buried in the log.
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