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

Domain

SQL

Difficulty

medium

Seniority

L5

Problem

From the lesson progress data, surface the three most-completed lessons each month. The content team uses this to guide investment decisions for the next quarter.

Summary

Rank items within time periods and keep top 3

Practice This Problem

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