FA-48550 / Delimited text / Member archive

A later nested column replaces its existing parent object · case 05

A structured table violates the declared record or column contract.

Member previewVariant 5 · 3 implementations · 7 checks per implementation

Case contract

Bind comma values to comma headers whose dots denote object paths. Empty path components, duplicate complete paths, or a path that is both leaf and parent reject. Scalar leaves remain text. Header and value counts must match. Return nested dictionaries.

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
nested	`{"user": {"city": "x"}}`	`{"user": {"city": "x", "name": "cellcellcellcellcell"}}`	Failed

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