cloud-fan commented on a change in pull request #31474:
URL: https://github.com/apache/spark/pull/31474#discussion_r570267617
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/v2Commands.scala
##########
@@ -325,11 +325,13 @@ case class AlterNamespaceSetLocation(
*/
case class ShowNamespaces(
namespace: LogicalPlan,
- pattern: Option[String]) extends Command {
+ pattern: Option[String],
+ override val output: Seq[Attribute] = ShowNamespaces.OUTPUT) extends
Command {
Review comment:
I think it's better to put the `output` field in the constructor so that
it's more stable (copying the node will not regenerate the output attributes).
It also helps if we want to support self-join later.
----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
[email protected]
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
