Return user_id and username from users where user_id is in the set of user_ids that appear in transa

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

Domain

SQL

Difficulty

medium

Problem

Return user_id and username from users where user_id is in the set of user_ids that appear in transactions. Use a subquery with IN. Order by user_id ascending.

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