# Find usernames where EXISTS a transaction for that user with quantity >= 5

Canonical URL: <https://datadriven.io/problems/find-usernames-where-exists-a-transaction-for-that-user-with-3f60e999>

Domain: SQL · Difficulty: medium

## Problem

Find usernames where EXISTS a transaction for that user with quantity >= 5. Return user_id and username. Order by user_id.

## Related

- [All practice problems](https://datadriven.io/problems)
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