|Column to use for sampling. The table must have at least one such column, and must have every input_column that the InputColumns argument specifies.
|BYTEINT, SMALLINT, INTEGER, BIGINT, NUMERIC, DOUBLE PRECISION, or NUMBER
|Optional. Contains the weights for weighted sampling of the rows. Can be an input_column.
|Optional. Column by which to partition the input. Can be an input_column.