aggregate
internal fun <Value : Any, Return> Aggregator<Value, Return>.aggregate(values: Sequence<Value?>, valueType: ValueType): Return
internal fun <Value : Any, Return> Aggregator<Value, Return>.aggregate(values: Sequence<Value?>, valueType: KType): Return
Performs aggregation on the given values, taking valueType into account. If valueType is unknown, see calculateValueType or aggregateCalculatingValueType.
internal fun <Value : Any, Return> Aggregator<Value, Return>.aggregate(column: DataColumn<Value?>): Return
Aggregates the data in the given column and computes a single resulting value.
internal fun <Value : Any, Return> Aggregator<Value, Return>.aggregate(columns: Sequence<DataColumn<Value?>>): Return
Aggregates the data in the given columns and computes a single resulting value.