Aggregation<C, COut> Class

public abstract class Aggregation<C, COut>

Public MustInherit Class Aggregation(Of C, COut)

generic<typename C, typename COut>
public ref class Aggregation abstract

[<AbstractClassAttribute>]
type Aggregation<'C, 'COut> = class end

Inheritance

Object  →  Aggregation<C, COut>

Type Parameters

C

The source dataframe column-key type.

COut

The result dataframe column-key type.

An Aggregation<C, COut> identifies selected source columns, an aggregation operation, and output column keys. Descriptors are immutable request objects. They do not execute by themselves.

All descriptors supplied to one descriptor-based Aggregate call must have the same source key type and output key type. The default factory methods use string output keys. Use As(...) to choose another custom typed key.

Reference