Approximate Cardinality Function Syntax | Teradata Vantage - Approximate Cardinality Syntax - Teradata Vantage

ApproxCardinalityReduce version 1.3, ApproxCardinalityMap version 1.3

SELECT * FROM ApproxCardinalityReduce (
  ON ( [ SELECT * FROM ] ApproxCardinalityMap (
    ON { table | view | (query) }
    USING
    TargetColumns ({ 'target_column' | target_column_range [,...])
    [ ErrorRate (error_tolerance) ]
    ) AS alias_1
  ) PARTITION BY column_name
) AS alias_2;