calc_requirements

datafusion_physical_plan::windows

Function calc_requirements 

Source 
pub(crate) fn calc_requirements<T: Borrow<Arc<dyn PhysicalExpr>>, S: Borrow<PhysicalSortExpr>>(
    partition_by_exprs: impl IntoIterator<Item = T>,
    orderby_sort_exprs: impl IntoIterator<Item = S>,
) -> Option<OrderingRequirements>