[GitHub] [spark] gengliangwang commented on a diff in pull request #37548: [SPARK-40066][SQL][FOLLOW-UP] Check if ElementAt is resolved before getting its dataType

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

gengliangwang commented on code in PR #37548:
URL: https://github.com/apache/spark/pull/37548#discussion_r947528023


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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/collectionOperations.scala:
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@@ -2272,7 +2272,7 @@ case class ElementAt(
     newLeft: Expression, newRight: Expression): ElementAt = copy(left = newLeft, right = newRight)
 
   override def initQueryContext(): Option[SQLQueryContext] = {
-    if (failOnError && left.dataType.isInstanceOf[ArrayType]) {
+    if (failOnError && left.resolved && left.dataType.isInstanceOf[ArrayType]) {

Review Comment:
   This should work. Probably there is a better way.



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