yaooqinn commented on a change in pull request #27187: [SPARK-30497][SQL]
migrate DESCRIBE TABLE to the new framework
URL: https://github.com/apache/spark/pull/27187#discussion_r365676166
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/v2Commands.scala
##########
@@ -314,12 +315,13 @@ case class ShowNamespaces(
}
/**
- * The logical plan of the DESCRIBE TABLE command that works for v2 tables.
+ * The logical plan of the DESCRIBE relation_name command that works for v2
tables.
*/
-case class DescribeTable(table: NamedRelation, isExtended: Boolean) extends
Command {
-
- override lazy val resolved: Boolean = table.resolved
-
+case class DescribeRelation(
+ relation: LogicalPlan,
+ partitionSpec: TablePartitionSpec,
+ isExtended: Boolean) extends Command {
+ override def children: Seq[LogicalPlan] = Seq(relation)
Review comment:
this `def` is needed for all commands resolved by the new framework, we may
create a trait to reduced redundancy
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