The Aggregate node is used to perform functional operations against each row of data produced by the node data source. These functional operations do not take into account the order of the parameters, and so are limited to functions dealing with input values as an aggregate.

The Aggregate Editor, like the Composite Node editor, is used to create the output schema of the aggregate node. The schema is created by adding field names to the schema and assigning functions to each field.

Each aggregate function takes a set of input source fields as parameter values. You select these input parameters in the Function Editor (see About Graph Functions). There is no limit to the number of parameters that you can select for a function, with the exception of the Pass Through function, which passes through a single value without altering the value, making the value available for the next consuming node in the graph.