FA-48369 / Delimited text / Member archive

A null bitmap uses the opposite meaning for set bits · case 04

A structured table violates the declared record or column contract.

Member previewVariant 4 · 3 implementations · 8 checks per implementation

Case contract

Decode bitmap|comma-payload rows. Bitmap consists of 0 and 1; 1 denotes null and consumes no payload, 0 consumes one payload field. Empty payload encodes zero fields only when bitmap has no zero bits; otherwise it is one empty field. Reject leftover or insufficient values. Return logical cells.

Why this case matters

Delimited interchange needs explicit framing, schema and field semantics at ingestion and emission boundaries.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
mixed	`null`	`["cellcellcellcell", null, "z"]`	Failed

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