Module datafusion::logical_expr::function
source · Expand description
Function module contains typing and signature for built-in and user defined functions.
Structs§
AccumulatorArgs
contains information about how an aggregate function was called, including the types of its arguments and any optional ordering expressions.
Type Aliases§
- Factory that returns an accumulator for the given aggregate function.
- Factory that creates a PartitionEvaluator for the given window function
- Factory that returns the functions’s return type given the input argument types
- Scalar function
- Factory that returns the types used by an aggregator to serialize its state, given its return datatype.