Live Wire

A medium SQL interview practice problem on DataDriven. Write and execute real sql code with instant grading.

Domain

SQL

Difficulty

medium

Seniority

L4

Problem

Every change to a feature flag is written as a new row, so a single flag shows up many times across its history. For each owning team, find the flag they touched most recently and when that change landed, with the most recently active team first.

Summary

The last switch each team flipped.

Practice This Problem

Solve this SQL problem with real code execution. DataDriven runs your SQL queries against a real database and grades it automatically.