Package ai.rapids.cudf

Class GroupByScanAggregation

java.lang.Object

ai.rapids.cudf.GroupByScanAggregation

public final class GroupByScanAggregation
extends Object

An aggregation that can be used for a grouped scan.

Method Summary

Modifier and Type	Method	Description
static GroupByScanAggregation	count(NullPolicy nullPolicy)	Count number of elements.
static GroupByScanAggregation	denseRank()	Get the row's dense ranking.
boolean	equals(Object other)
int	hashCode()
static GroupByScanAggregation	max()	Max Aggregation
static GroupByScanAggregation	min()	Min Aggregation
GroupByScanAggregationOnColumn	onColumn(int columnIndex)	Add a column to the Aggregation so it can be used on a specific column of data.
static GroupByScanAggregation	percentRank()	Get the row's percent ranking.
static GroupByScanAggregation	product()	Product Aggregation.
static GroupByScanAggregation	rank()	Get the row's ranking.
static GroupByScanAggregation	sum()	Sum Aggregation

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Method Details

onColumn

public GroupByScanAggregationOnColumn onColumn(int columnIndex)

Add a column to the Aggregation so it can be used on a specific column of data.

Parameters:

columnIndex - the index of the column to operate on.

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object other)

Overrides:

equals in class Object

sum

public static GroupByScanAggregation sum()

Sum Aggregation

product

public static GroupByScanAggregation product()

Product Aggregation.

min

public static GroupByScanAggregation min()

Min Aggregation

max

public static GroupByScanAggregation max()

Max Aggregation

count

public static GroupByScanAggregation count(NullPolicy nullPolicy)

Count number of elements.

Parameters:

nullPolicy - INCLUDE if nulls should be counted. EXCLUDE if only non-null values should be counted.

rank

public static GroupByScanAggregation rank()

Get the row's ranking.

denseRank

public static GroupByScanAggregation denseRank()

Get the row's dense ranking.

percentRank

public static GroupByScanAggregation percentRank()

Get the row's percent ranking.