cloud-fan commented on code in PR #49772:
URL: https://github.com/apache/spark/pull/49772#discussion_r1951988840
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/ResolveDDLCommandStringTypes.scala:
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@@ -155,22 +123,22 @@ object ResolveDefaultStringTypes extends
Rule[LogicalPlan] {
dataType.existsRecursively(isDefaultStringType)
private def isDefaultStringType(dataType: DataType): Boolean = {
+ // STRING (without explicit collation) is considered default string type.
+ // STRING COLLATE <collation_name> (with explicit collation) is not
considered
+ // default string type even when explicit collation is UTF8_BINARY
(default collation).
dataType match {
- case st: StringType =>
- // should only return true for StringType object and not
StringType("UTF8_BINARY")
- st.eq(StringType) || st.isInstanceOf[TemporaryStringType]
+ // should only return true for StringType object and not for
StringType("UTF8_BINARY")
+ case st: StringType => st.eq(StringType)
Review Comment:
This is exactly the same as `case StringType => true`
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