A easy ai_coding interview practice problem on DataDriven. Write and execute real ai_coding code with instant grading.

Domain

ai_coding

Difficulty

easy

Seniority

L4

Problem

Analytics ships fct_payments through dbt nightly. The unique test on payment_id passes locally every time, fails in CI ~20% of runs. Same input fixtures, same model SQL. Run tests/test_uniqueness.py to reproduce, then fix the model so the test is deterministic. The fix is in the SQL, not the test.

Summary

Green, green, red, green.

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