cloud-fan commented on a change in pull request #30881:
URL: https://github.com/apache/spark/pull/30881#discussion_r548399246
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/v2Commands.scala
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@@ -344,10 +344,11 @@ case class DescribeRelation(
*/
case class DescribeColumn(
relation: LogicalPlan,
- colNameParts: Seq[String],
+ column: NamedExpression,
isExtended: Boolean) extends Command {
override def children: Seq[LogicalPlan] = Seq(relation)
override def output: Seq[Attribute] =
DescribeCommandSchema.describeColumnAttributes()
+ override lazy val references: AttributeSet = AttributeSet.empty
Review comment:
I agree. About `ResolvedView`, I think eventually it will have output as
well, after we have v2 view APII. For now, `ResolvedView` always go to v1
command, so we don't need its output.
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