MaxGekk commented on a change in pull request #28343:
URL: https://github.com/apache/spark/pull/28343#discussion_r416351119
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/predicates.scala
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@@ -519,7 +520,9 @@ case class InSet(child: Expression, hset: Set[Any]) extends
UnaryExpression with
override def sql: String = {
val valueSQL = child.sql
- val listSQL = hset.toSeq.map(Literal(_).sql).mkString(", ")
+ val listSQL = hset.toSeq
+ .map(elem => Literal(convertToScala(elem, child.dataType)).sql)
Review comment:
So, the problem is Literal requires external types but elem has internal
Catalyst's type
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