Method call

datafusion/expr/src/udaf.rs:158–167

Creates an [`Expr`] that calls the aggregate function. This utility allows using the UDAF without requiring access to the registry, such as with the DataFrame API.

(&self, args: Vec<Expr>)

    /// This utility allows using the UDAF without requiring access to
    /// the registry, such as with the DataFrame API.
    pub fn call(&self, args: Vec<Expr>) -> Expr {
        Expr::AggregateFunction(AggregateFunction::new_udf(
            Arc::new(self.clone()),
            args,
            false,
            None,
            vec![],
            None,
        ))
    }

    /// Returns this function's name
    ///