alamb commented on code in PR #8440:
URL: https://github.com/apache/arrow-datafusion/pull/8440#discussion_r1417687619
##########
datafusion/core/src/physical_optimizer/pruning.rs:
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@@ -344,11 +451,10 @@ impl RequiredStatColumns {
// only add statistics column if not previously added
if need_to_insert {
- let stat_field = Field::new(
- stat_column.name(),
- field.data_type().clone(),
- field.is_nullable(),
- );
+ // may be null if statistics are not present
Review Comment:
A non-nullable column may appear as NULL in the `min/max` statistic values
if the min or max values are not known, even if the original column can not
contain null
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