andishgar opened a new pull request, #47183: URL: https://github.com/apache/arrow/pull/47183
### Rationale for this change Implement support for the `ARROW:distinct_count:approximate` statistics attribute. ### What changes are included in this PR? Changed the type of `arrow::ArrayStatistics::distinct_count` to support both `double` (for approximate values) and `int64_t` (for exact values). ### Are these changes tested? Yes, I ran the corresponding unit test. ### Are there any user-facing changes? Yes, the type of `arrow::ArrayStatistics::distinct_count` was changed from `std::optional<int64_t>` to `std::optional<std::variant<int64_t, double>>`. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: github-unsubscr...@arrow.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org