pitrou commented on issue #46270:
URL: https://github.com/apache/arrow/issues/46270#issuecomment-2842271819
> I think this is more user-friendly as is...if you have a query rectangle,
you can do `if (dimension_empty(0) || dimension_empty(1)) skipThisRowGroup()`
without checking validity.
Can you? I think it's the reverse:
```
/// True for a given dimension if and only if zero non-NaN values were
encountered
/// in that dimension and dimension_valid() is true for that dimension.
```
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