Function mz_expr::relation::func::fused_value_window_func

fn fused_value_window_func<'a, I>(
    input_datums: I,
    callers_temp_storage: &'a RowArena,
    funcs: &Vec<AggregateFunc>,
    order_by: &Vec<ColumnOrder>,
) -> Datum<'a>
where
    I: IntoIterator<Item = Datum<'a>>,

Executes FusedValueWindowFunc on a reduction group. The expected input is in the format of [((OriginalRow, (Args1, Args2, ...)), OrderByExprs...)] where Args1, Args2, are the arguments of each of the fused functions. For functions that have only a single argument (first_value/last_value), these are simple values. For functions that have multiple arguments (lag/lead), these are also records.