[GitHub] [spark] dongjoon-hyun commented on a change in pull request #33070: [SPARK-35551][SQL] Handle the COUNT bug for lateral subqueries

[GitBox <gi...@apache.org>]

dongjoon-hyun commented on a change in pull request #33070:
URL: https://github.com/apache/spark/pull/33070#discussion_r659261525



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File path: sql/catalyst/src/main/scala-2.12/org/apache/spark/sql/catalyst/expressions/AttributeMap.scala
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@@ -50,4 +50,6 @@ class AttributeMap[A](val baseMap: Map[ExprId, (Attribute, A)])
   override def iterator: Iterator[(Attribute, A)] = baseMap.valuesIterator
 
   override def -(key: Attribute): Map[Attribute, A] = baseMap.values.toMap - key
+
+  def ++(other: AttributeMap[A]): AttributeMap[A] = new AttributeMap(baseMap ++ other.baseMap)

Review comment:
       This is fixing `src/main/scala-2.12` only. We need to do the same thing for `src/main/scala-2.13`.




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