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

Domain

SQL

Difficulty

medium

Seniority

L4

Problem

For each reviewer who has reviewed at least one merged pull request (a PR with a non-null merged date), show the total number of unique repos reviewed, total repos where the PR was merged, and the latest review date.

Summary

Some reviewers are thorough. Others are fast.

Practice This Problem

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