Function compare_columns

pub fn compare_columns<F>(
    order: &[ColumnOrder],
    left: &[Datum<'_>],
    right: &[Datum<'_>],
    tiebreaker: F,
) -> Ordering
where
    F: Fn() -> Ordering,

Compare left and right using order. If that doesn’t produce a strict ordering, call tiebreaker.