cloud-fan commented on code in PR #42577:
URL: https://github.com/apache/spark/pull/42577#discussion_r1384598897
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sql/catalyst/src/main/scala/org/apache/spark/sql/connector/expressions/expressions.scala:
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@@ -150,6 +153,41 @@ private[sql] object BucketTransform {
}
}
+/**
+ * This class represents a transform for [[ClusterBySpec]]. This is used to
bundle
+ * ClusterBySpec in CreateTable's partitioning transforms to pass it down to
analyzer.
+ */
+final case class ClusterByTransform(
+ columnNames: Seq[NamedReference]) extends RewritableTransform {
+
+ override val name: String = "cluster_by"
+
+ override def references: Array[NamedReference] = {
+ arguments.collect { case named: NamedReference => named }
Review Comment:
it's `columnNames: Seq[NamedReference]`, we can just return `columnNames`
here.
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