phillipleblanc commented on code in PR #10707:
URL: https://github.com/apache/datafusion/pull/10707#discussion_r1650021623
##########
datafusion/expr/src/logical_plan/builder.rs:
##########
@@ -1373,33 +1373,32 @@ pub fn union(left_plan: LogicalPlan, right_plan:
LogicalPlan) -> Result<LogicalP
}
// create union schema
- let union_qualified_fields =
+ let union_fields =
zip(left_plan.schema().iter(), right_plan.schema().iter())
.map(
- |((left_qualifier, left_field), (_right_qualifier,
right_field))| {
+ |((_, left_field), (_, right_field))| {
Review Comment:
Asked on Discord why we need to enforce the `DuplicateUnqualifiedField`
check - Postgres itself does not error if two columns have the same name.
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