AngersZhuuuu commented on a change in pull request #31245:
URL: https://github.com/apache/spark/pull/31245#discussion_r560685270
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File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/command/tables.scala
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@@ -835,21 +835,11 @@ case class DescribeColumnCommand(
case class ShowTablesCommand(
databaseName: Option[String],
tableIdentifierPattern: Option[String],
+ override val output: Seq[Attribute] = Seq.empty,
isExtended: Boolean = false,
partitionSpec: Option[TablePartitionSpec] = None) extends RunnableCommand {
- // The result of SHOW TABLES/SHOW TABLE has three basic columns: database,
tableName and
- // isTemporary. If `isExtended` is true, append column `information` to the
output columns.
- override val output: Seq[Attribute] = {
- val tableExtendedInfo = if (isExtended) {
- AttributeReference("information", StringType, nullable = false)() :: Nil
- } else {
Review comment:
> The output should be delivered by logical nodes(ShowTables and
ShowTableExtended) in normal.
Yea, got it， thanks.
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