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

Domain

SQL

Difficulty

medium

Seniority

L4

Problem

Find authors whose name starts with 'a' (case-insensitive) who belong to the service(s) with the most unique authors. If multiple services tie for largest team, include matching authors from all of them. Return the service name and author.

Summary

Senior leads in the biggest teams.

Practice This Problem

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