{
  "id": "masking/mask-alias",
  "regime": "conformance",
  "profile": "GACS-E1",
  "claim": "masking",
  "harness": "query",
  "policy": "policies/sql-gate.json",
  "query": "SELECT email AS contact FROM public.customers",
  "rationale": "A configured column is marked for masking in the result, including through alias, concat, CASE, and subquery.",
  "doesNotTest": "Inference through predicates on the same column; content detectors on other fields.",
  "sourceVector": "test-vectors/sql-gate/vectors.json#mask-alias",
  "expect": "allow",
  "expectMaskedContains": "contact"
}