mapleFU commented on issue #37559:
URL: https://github.com/apache/arrow/issues/37559#issuecomment-1709408707
I Propose that:
1. Use `arrow::Expression` to represent the expr
2. Firstly, we can prune by Column index. It can be done like a
```c++
Status StatisticsAsScalars(const Statistics& statistics,
std::shared_ptr<::arrow::Scalar>* min,
std::shared_ptr<::arrow::Scalar>* max);
Status ColumnIndexAsScalars(...,
std::shared_ptr<::arrow::Scalar>* min,
std::shared_ptr<::arrow::Scalar>* max);
```
The result might be a `RowRanges`. We can combine it with specific Filter
Pushdown.
3. When it comes to arrow reader, maybe we can put then within
`parquet/arrow` directory, and try to lazy eval them. And we can drive the
underlying leafReader via RowRange.
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