fn read_group_sorted_stream(
        &self,
        _predicates: &Predicate,
        _group_column: ColumnName<'_>,
        _aggregates: &[(ColumnName<'_>, AggregateType)],
    ) {
        todo!()
    }
// Optimised `read_group` method for cases where the columns being grouped
// are already totally ordered in the `RowGroup`.
//
// In this case the rows are already in "group key order" and the aggregates
// can be calculated by reading the rows in order.
Optimised `read_group` method for cases where the columns being grouped
are already totally ordered in the `RowGroup`.

In this case the rows are already in "group key order" and the aggregates
can be calculated by reading the rows in order.
Optimised ` read_group ` method for cases where the columns being grouped are already totally ordered in the ` RowGroup ` . In this case the rows are already in " group key order " and the aggregates can be calculated by reading the rows in order .
fn read_group_sorted_stream(
        &self,
        _predicates: &Predicate,
        _group_column: ColumnName<'_>,
        _aggregates: &[(ColumnName<'_>, AggregateType)],
    ) {
        todo!()
    }
fn read_group_sorted_stream ( & self , _predicates : & Predicate , _group_column : ColumnName < ' _ > , _aggregates : & [ ( ColumnName < ' _ > , AggregateType ) ] , ) { todo ! ( ) }
Optimised `read_group` method for cases where the columns being grouped
are already totally ordered in the `RowGroup`.
Optimised ` read_group ` method for cases where the columns being grouped are already totally ordered in the ` RowGroup ` .
&self
_predicates
&Predicate
_group_column
ColumnName<'_>
_aggregates
&[(ColumnName<'_>, AggregateType)]
&self
_predicates
&Predicate
_group_column
ColumnName<'_>
_aggregates
&[(ColumnName<'_>, AggregateType)]