Function datafusion::prelude::call_fn

pub fn call_fn(
    name: impl AsRef<str>,
    args: Vec<Expr>
) -> Result<Expr, DataFusionError>

Calls a named built in function

use datafusion_expr::{col, lit, call_fn};

// create the expression sin(x) < 0.2
let expr = call_fn("sin", vec![col("x")]).unwrap().lt(lit(0.2));