Module sum 

Defines SUM and SUM DISTINCT aggregate accumulators

Structs

SlidingDistinctSumAccumulator

A sliding‐window accumulator for SUM(DISTINCT) over Int64 columns. Maintains a running sum so that evaluate() is O(1).

Sum

Functions

sum

Returns the sum of a group of values.

sum_udaf

AggregateFunction that returns a AggregateUDF for Sum