mihailom-db commented on code in PR #45422:
URL: https://github.com/apache/spark/pull/45422#discussion_r1530084248
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/TypeCoercion.scala:
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@@ -994,8 +994,11 @@ object TypeCoercion extends TypeCoercionBase {
case (StringType, datetime: DatetimeType) => datetime
case (StringType, AnyTimestampType) =>
AnyTimestampType.defaultConcreteType
case (StringType, BinaryType) => BinaryType
+ case (st: StringType, StringType) => st
+ case (st: StringType, _: StringTypeCollated) => st
// Cast any atomic type to string.
case (any: AtomicType, StringType) if any != StringType => StringType
+ case (any: AtomicType, _: StringTypeCollated) if any != StringType =>
StringType
Review Comment:
Is this what you meant?
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