dongjoon-hyun commented on a change in pull request #24599: [SPARK-27701][SQL]
Extend NestedColumnAliasing to more nested field cases
URL: https://github.com/apache/spark/pull/24599#discussion_r291844174
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/NestedColumnAliasing.scala
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@@ -31,7 +31,7 @@ import org.apache.spark.sql.types._
object NestedColumnAliasing {
def unapply(plan: LogicalPlan)
- : Option[(Map[GetStructField, Alias], Map[ExprId, Seq[Alias]])] = plan
match {
+ : Option[(Map[ExtractValue, Alias], Map[ExprId, Seq[Alias]])] = plan match
{
case Project(projectList, child)
if SQLConf.get.nestedSchemaPruningEnabled &&
canProjectPushThrough(child) =>
Review comment:
During reviews, shall we test with
`spark.sql.optimizer.nestedSchemaPruning.enabled=true`?
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