Function plan

datafusion/core/src/physical_planner.rs:3263–3271

(logical_plan: &LogicalPlan)

    }

    async fn plan(logical_plan: &LogicalPlan) -> Result<Arc<dyn ExecutionPlan>> {
        let session_state = make_session_state();
        // optimize the logical plan
        let logical_plan = session_state.optimize(logical_plan)?;
        let planner = DefaultPhysicalPlanner::default();
        planner
            .create_physical_plan(&logical_plan, &session_state)
            .await
    }

    async fn aggregate_explain(logical_plan: &LogicalPlan) -> Result<String> {
        let physical_plan = plan(logical_plan).await?;