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Column binding ignores explicit relation qualifiers · case 02

Column binding ignores explicit relation qualifiers.

Member previewVariant 2 · 3 implementations · 7 checks per implementation

Case contract

Resolve query references [qualifier-or-None,name] against schema entries [relation,name,field-id]. Unqualified names bind only when exactly one matching column exists. Qualified names use both relation and name; no candidates yields MISSING and several yield AMBIGUOUS. Return stable field IDs.

Why this case matters

A bounded deterministic data engine model makes representation and changelog faults reproducible.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
qualified same name	`["AMBIGUOUS", "AMBIGUOUS"]`	`[3, 2]`	Failed

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