comphead commented on code in PR #6015:
URL: https://github.com/apache/arrow-datafusion/pull/6015#discussion_r1168973195
##########
datafusion/expr/src/logical_plan/builder.rs:
##########
@@ -1041,11 +1041,18 @@ pub fn build_join_schema(
right: &DFSchema,
join_type: &JoinType,
) -> Result<DFSchema> {
+ fn nullify_fields(fields: &[DFField]) -> Vec<DFField> {
Review Comment:
Thanks @alamb
This fixes partially #5747
I will investigate what is the use case for
[arrow-datafusion/datafusion/core/src/physical_plan/joins/utils.rs](https://github.com/apache/arrow-datafusion/blob/5b9db17528910328d6ea00d5a6a81138ac6a680b/datafusion/core/src/physical_plan/joins/utils.rs#L349)
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