Method fun

datafusion/physical-expr/src/aggregate.rs:649–651

Return the `AggregateUDF` used by this `AggregateFunctionExpr`

(&self)

impl AggregateFunctionExpr {
    /// Return the `AggregateUDF` used by this `AggregateFunctionExpr`
    pub fn fun(&self) -> &AggregateUDF {
        &self.fun
    }

    /// expressions that are passed to the Accumulator.
    /// Single-column aggregations such as `sum` return a single value, others (e.g. `cov`) return many.