cloud-fan commented on code in PR #48585:
URL: https://github.com/apache/spark/pull/48585#discussion_r1814473686
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/TypeCoercion.scala:
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@@ -356,6 +367,71 @@ abstract class TypeCoercionBase {
plan
}
}
+
+ /** Builds new children for set operators while resolving collation
conflicts in respective
+ * children columns. This is being done before any other type widening
because STRING can also
+ * be casted to a different dataType, but conflicts between collations
have to be reported. */
+ private def buildNewChildrenWithResolvedCollation(
+ children: Seq[LogicalPlan]): Seq[LogicalPlan] = {
Review Comment:
```suggestion
children: Seq[LogicalPlan]): Seq[LogicalPlan] = {
```
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