MaxGekk commented on code in PR #48598:
URL: https://github.com/apache/spark/pull/48598#discussion_r1812741524
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/predicates.scala:
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@@ -655,6 +657,14 @@ case class InSet(child: Expression, hset: Set[Any])
extends UnaryExpression with
}
@transient lazy val set: Set[Any] = child.dataType match {
+ case st: StringType =>
+ if (st.supportsBinaryEquality) {
+ hset
+ } else if (st.supportsLowercaseEquality) {
Review Comment:
@stefankandic Correct me if I am wrong. I need particular property: before
to compare, I have to call `UTF8String.lowerCaseCodePoints` for both arguments.
I guess there could be more than one collation that satisfies the property.
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