Module count 

Structs

Count

CountAccumulator 🔒

CountGroupsAccumulator 🔒

An accumulator to compute the counts of [PrimitiveArray<T>]. Stores values as native types, and does overflow checking

DistinctCountAccumulator 🔒

General purpose distinct accumulator that works for any DataType by using ScalarValue.

SlidingDistinctCountAccumulator

Functions

count

Count the number of non-null values in the column

count_all

Creates aggregation to count all rows.

count_all_window

Creates window aggregation to count all rows.

count_distinct

count_udaf

AggregateFunction that returns a AggregateUDF for Count

get_count_accumulator 🔒

null_count_for_multiple_cols 🔒

count null values for multiple columns for each row if one column value is null, then null_count + 1