| Package | Description |
|---|---|
| ai.rapids.cudf |
| Modifier and Type | Class and Description |
|---|---|
class |
AggregationOverWindow<T extends Aggregation & RollingAggregation<T>>
An Aggregation instance that also holds a column number and window metadata so the aggregation
can be done over a specific window.
|
| Modifier and Type | Method and Description |
|---|---|
AggregationOnColumn<T> |
AggregationOverWindow.onColumn(int columnIndex) |
AggregationOnColumn<T> |
AggregationOnColumn.onColumn(int columnIndex) |
<T extends Aggregation> |
Aggregation.onColumn(int columnIndex)
Add a column to the Aggregation so it can be used on a specific column of data.
|
| Modifier and Type | Method and Description |
|---|---|
Table |
Table.GroupByOperation.aggregate(AggregationOnColumn... aggregates)
Aggregates the group of columns represented by indices
Usage:
aggregate(count(), max(2),...);
example:
input : 1, 1, 1
1, 2, 1
2, 4, 5
table.groupBy(0, 2).count()
col0, col1
output: 1, 1
1, 2
2, 1 ==> aggregated count
|
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