Function can_evaluate_to_const

datafusion/functions-nested/src/map.rs:61–64

Check if we can evaluate the expr to constant directly. # Example ```sql SELECT make_map('type', 'test') from test ``` We can evaluate the result of `make_map` directly.

(args: &[ColumnarValue])

/// ```
/// We can evaluate the result of `make_map` directly.
fn can_evaluate_to_const(args: &[ColumnarValue]) -> bool {
    args.iter()
        .all(|arg| matches!(arg, ColumnarValue::Scalar(_)))
}

fn make_map_batch(args: &[ColumnarValue]) -> Result<ColumnarValue> {
    let [keys_arg, values_arg] = take_function_args("make_map", args)?;