FA-100335 / Dataset deduplication grouping / Member archive
Dataset deduplication: duplicate rows consume the result cap · case 05
duplicate rows consume the result cap.
Case contract
Rows [key,id]. Return first representatives for distinct keys, truncated to nonnegative limit.
Why this case matters
This deterministic toy operation makes one dataset equivalence or representative rule explicit.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| duplicates before cap | ["a1", "a2"] | ["a1", "b1"] | Failed |
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