Method udwf

datafusion/expr/src/registry.rs:236–241

(&self, name: &str)

    }

    fn udwf(&self, name: &str) -> Result<Arc<WindowUDF>> {
        self.udwfs
            .get(name)
            .cloned()
            .ok_or_else(|| plan_datafusion_err!("Window Function {name} not found"))
    }

    fn register_udf(&mut self, udf: Arc<ScalarUDF>) -> Result<Option<Arc<ScalarUDF>>> {
        Ok(self.udfs.insert(udf.name().to_string(), udf))