alamb commented on code in PR #4255:
URL: https://github.com/apache/arrow-datafusion/pull/4255#discussion_r1025451489
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datafusion/core/src/physical_plan/file_format/parquet/page_filter.rs:
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@@ -390,16 +405,50 @@ macro_rules! get_min_max_values_for_page_index {
match $self.col_page_indexes {
Index::NONE => None,
Index::INT32(index) => {
- let vec = &index.indexes;
- Some(Arc::new(Int32Array::from_iter(
- vec.iter().map(|x| x.$func().cloned()),
- )))
+ match $self.target_type {
+ // int32 to decimal with the precision and scale
+ Some(DataType::Decimal128(precision, scale)) => {
+ let vec = &index.indexes;
+ if let Ok(arr) = Decimal128Array::from_iter_values(
+ vec.iter().map(|x| *x.$func().unwrap() as i128),
+ )
+ .with_precision_and_scale(*precision, *scale)
+ {
+ return Some(Arc::new(arr));
+ } else {
+ return None;
+ }
+ }
+ _ => {
+ let vec = &index.indexes;
+ Some(Arc::new(Int32Array::from_iter(
+ vec.iter().map(|x| x.$func().cloned()),
+ )))
+ }
+ }
}
Index::INT64(index) => {
- let vec = &index.indexes;
- Some(Arc::new(Int64Array::from_iter(
- vec.iter().map(|x| x.$func().cloned()),
- )))
+ match $self.target_type {
+ // int64 to decimal with the precision and scale
+ Some(DataType::Decimal128(precision, scale)) => {
+ let vec = &index.indexes;
+ if let Ok(arr) = Decimal128Array::from_iter_values(
+ vec.iter().map(|x| *x.$func().unwrap() as i128),
Review Comment:
I wonder if it would be better to follow the model of below and rather than
unwrapping turn it into 'NULL'
something like 🤔
```suggestion
vec.iter().map(|x| *x.$func().ok()).map(|v| v as
i128),
```
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