ReadonlyanswerReadonlygroundedReadonlyisThe question asked to add/change/remove schema objects, so unknownReferences are proposals AskSQL never runs, not errors.
Optional ReadonlyproposedThe read-only query this answer suggested, if it suggested one. Carry it into the next turn's context so "run that query" means the query the user just read. Absent for a write proposal.
ReadonlytablesCatalog tables given to the model as grounding (schema-qualified where applicable).
ReadonlyunknownIdentifier-shaped names in the answer absent from the schema. For a schema-change request these are proposed new names; otherwise they are hallucinations.
True unless the answer named a table/column not present in the schema.