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datafusion::physical_plan::udaf - Rust

Module datafusion::physical_plan::udaf

Expand description

This module contains functions and structs supporting user-defined aggregate functions.

Structs

AggregateFunctionExpr
Physical aggregate expression of a UDAF.
AggregateUDF
Logical representation of a user-defined aggregate function (UDAF).

Functions

create_aggregate_expr
Creates a physical expression of the UDAF, that includes all necessary type coercion. This function errors when args’ can’t be coerced to a valid argument type of the UDAF.