Unit of a spec's output n — declared outright, or folded from input 0.
n
null means unitless: the consumer supplied no unit for the raw column at the root of the chain. That is reported rather than guessed.
null
Unit of a spec's output
n— declared outright, or folded from input 0.nullmeans unitless: the consumer supplied no unit for the raw column at the root of the chain. That is reported rather than guessed.