alamb commented on issue #10624:
URL: https://github.com/apache/arrow-rs/issues/10624#issuecomment-5270877583
i think this is a good idea (and a very clear ticket)
```rust
pub struct RowGroupSelection {
row_group_index: usize,
selection: Option<RowSelection>,
}
builder.with_row_group_selections(vec![
RowGroupSelection::new(0, Some(bitmap_selection)),
RowGroupSelection::new(2, Some(selector_selection)),
RowGroupSelection::new(3, None),
]);
```
In my mind the trick will be how to mesh the existing apis
(`with_row_groups` and `with_row_selection`) and make sure we have a coherent
documentation of what will happen if the user calls each one
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