wangyum commented on a change in pull request #29790:
URL: https://github.com/apache/spark/pull/29790#discussion_r492814578
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/subquery.scala
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@@ -225,10 +225,13 @@ case class ScalarSubquery(
children: Seq[Expression] = Seq.empty,
exprId: ExprId = NamedExpression.newExprId)
extends SubqueryExpression(plan, children, exprId) with Unevaluable {
- override def dataType: DataType = {
+
+ private lazy val internalDataType: DataType = {
Review comment:
I reverted this change because I did not find an expression to call this
method many times.
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