dongjoon-hyun commented on a change in pull request #23353: [SPARK-26402][SQL]
Canonicalization on GetStructField
URL: https://github.com/apache/spark/pull/23353#discussion_r243050199
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/Canonicalize.scala
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@@ -41,6 +41,7 @@ object Canonicalize {
private[expressions] def ignoreNamesTypes(e: Expression): Expression = e
match {
case a: AttributeReference =>
AttributeReference("none", a.dataType.asNullable)(exprId = a.exprId)
+ case GetStructField(child, ordinal, _) => GetStructField(child, ordinal,
None)
Review comment:
+1 for this canonicalization.
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