Function mz_expr::relation::func::dense_rank

source ยท 
fn dense_rank<'a, I>(
    datums: I,
    callers_temp_storage: &'a RowArena,
    order_by: &[ColumnOrder],
) -> Datum<'a>
where
    I: IntoIterator<Item = Datum<'a>>,
Expand description

The expected input is in the format of [((OriginalRow, [EncodedArgs]), OrderByExprs...)] The output is in the format of [result_value, original_row]. See an example at lag_lead, where the input-output formats are similar.