Prolific Authors in Largest Service Teams

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

Domain

SQL

Difficulty

medium

Seniority

mid

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.

Practice This Problem

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