Function compare_grouping_values_with_enum_catalog 

pub fn compare_grouping_values_with_enum_catalog(
    left: &Value,
    right: &Value,
    control: &ProductionControl<'_>,
    enums: Option<&dyn EnumLabelCatalog>,
) -> Result<Ordering>

Order internal equality groups by physical enum identity, including nested keys. This ordering is not exposed as SQL ORDER BY and never observes an enum label merely to eliminate duplicates.