rip-nsk opened a new issue, #47995:
URL: https://github.com/apache/arrow/issues/47995
### Describe the bug, including details regarding any error messages,
version, and platform.
TypedStatistics::Megre function disregards column chunks when the minimum
value is an empty string (represented as {null, 0}) due to the following code:
```c++
optional<std::pair<ByteArray, ByteArray>> CleanStatistic(
std::pair<ByteArray, ByteArray> min_max, LogicalType::Type::type) {
if (min_max.first.ptr == nullptr || min_max.second.ptr == nullptr) {
return ::std::nullopt;
}
return min_max;
}
```
so both minimum and maximum values will be lost.
### Component(s)
C++
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