For each API call, show the endpoint, username (NULL when no user matches), and classify the status:

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

Domain

SQL

Difficulty

medium

Problem

For each API call, show the endpoint, username (NULL when no user matches), and classify the status: 'success' for 200, 'error' for other non-NULL values, 'unknown' when NULL.

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