# Show each API call's endpoint and username (NULL when no user matches)

Canonical URL: <https://datadriven.io/problems/show-each-api-calls-endpoint-and-username-null-when-no-use-4944258c>

Domain: SQL · Difficulty: medium

## Problem

Show each API call's endpoint and username (NULL when no user matches). Classify status: 'success' for 200, 'error' for other non-NULL values, 'unknown' when NULL.

## Related

- [All practice problems](https://datadriven.io/problems)
- [Mock interview mode](https://datadriven.io/interview/show-each-api-calls-endpoint-and-username-null-when-no-use-4944258c)
- [SQL Interview Questions](https://datadriven.io/sql-interview-questions)
- [Data Engineering Interview Prep Guide](https://datadriven.io/data-engineer-interview-prep)
- [Daily Challenge](https://datadriven.io/daily)

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