Function is_always_true

datafusion/pruning/src/pruning_predicate.rs:697–701

(expr: &Arc<dyn PhysicalExpr>)

}

fn is_always_true(expr: &Arc<dyn PhysicalExpr>) -> bool {
    expr.downcast_ref::<phys_expr::Literal>()
        .map(|l| matches!(l.value(), ScalarValue::Boolean(Some(true))))
        .unwrap_or_default()
}

fn is_always_false(expr: &Arc<dyn PhysicalExpr>) -> bool {
    expr.downcast_ref::<phys_expr::Literal>()