jayzhan211 commented on code in PR #14519:
URL: https://github.com/apache/datafusion/pull/14519#discussion_r1945670750
##########
datafusion/core/src/physical_planner.rs:
##########
@@ -689,7 +693,7 @@ impl DefaultPhysicalPlanner {
if physical_field.data_type() !=
logical_field.data_type() {
differences.push(format!("field data type at index
{} [{}]: (physical) {} vs (logical) {}", i, physical_field.name(),
physical_field.data_type(), logical_field.data_type()));
}
- if physical_field.is_nullable() !=
logical_field.is_nullable() {
+ if physical_field.is_nullable() &&
!logical_field.is_nullable() {
Review Comment:
Likely only a few cases like Union is exception, most of the case doesn't
change nullability
##########
datafusion/core/src/physical_planner.rs:
##########
@@ -689,7 +693,7 @@ impl DefaultPhysicalPlanner {
if physical_field.data_type() !=
logical_field.data_type() {
differences.push(format!("field data type at index
{} [{}]: (physical) {} vs (logical) {}", i, physical_field.name(),
physical_field.data_type(), logical_field.data_type()));
}
- if physical_field.is_nullable() !=
logical_field.is_nullable() {
+ if physical_field.is_nullable() &&
!logical_field.is_nullable() {
Review Comment:
Likely only a few case like Union is exception, most of the case doesn't
change nullability
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