Top Commit Authors by Repo

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

Domain

SQL

Difficulty

hard

Seniority

senior

Problem

Find the top 3 commit authors in each repo by average lines added. In case of a tie, break by author name alphabetically. Show each repo with its best, second-best, and third-best authors. If a position is unfilled, label it accordingly (e.g., 'No second author'). Format each entry as 'author (avg_added)'. Round to 1 decimal place.

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