AggregateFunction (Apache Calcite API)

All Superinterfaces:

Function

All Known Subinterfaces:

ImplementableAggFunction

All Known Implementing Classes:

AggregateFunctionImpl
```
public interface AggregateFunction
extends Function
```
Function that combines several values into a scalar result.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`RelDataType`	`getReturnType(RelDataTypeFactory typeFactory)`	Returns the return type of this function, constructed using the given type factory.

Methods inherited from interface org.apache.calcite.schema.Function
getParameters

- Method Detail
  - getReturnType
```
RelDataType getReturnType(RelDataTypeFactory typeFactory)
```
    Returns the return type of this function, constructed using the given type factory.
    
    Parameters:
    
    typeFactory - Type factory