GroupBy

Files
file	groupby.hpp

Classes
struct	cudf::groupby::aggregation_request
	Request for groupby aggregation(s) to perform on a column. More...
struct	cudf::groupby::scan_request
	Request for groupby aggregation(s) for scanning a column. More...
struct	cudf::groupby::aggregation_result
	The result(s) of an aggregation_request More...
class	cudf::groupby::groupby
	Groups values by keys and computes aggregations on those groups. More...
struct	cudf::groupby::streaming_aggregation_request
	Request for a single streaming groupby aggregation on a column. More...
class	cudf::groupby::streaming_groupby
	Stateful streaming groupby that accumulates partial aggregates across batches. More...

Functions
bool	cudf::groupby::is_streaming_groupby_supported (data_type values_type, aggregation::Kind kind)
	Returns true if streaming_groupby supports the given value type and aggregation kind combination. More...

Detailed Description

Function Documentation

is_streaming_groupby_supported()

bool cudf::groupby::is_streaming_groupby_supported	(	data_type	values_type,
		aggregation::Kind	kind
	)

Returns true if streaming_groupby supports the given value type and aggregation kind combination.

Use this to query support without constructing a streaming_groupby. A true return implies that an aggregate() call with a value column of values_type and an aggregation of kind will not be rejected on type/kind grounds.

Parameters

values_type	Type of the value column the aggregation would run on
kind	Aggregation kind

Returns

True if the combination is supported, false otherwise