cloud-fan commented on a change in pull request #23883: [SPARK-26982][SQL]
Enhance describe framework to describe the output of a query.
URL: https://github.com/apache/spark/pull/23883#discussion_r260111594
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File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/command/tables.scala
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@@ -495,13 +495,15 @@ case class TruncateTableCommand(
}
/**
- * Command that looks like
+ * Commands can of the following forms.
* {{{
* DESCRIBE [EXTENDED|FORMATTED] table_name partitionSpec?;
+ * DESCRIBE [QUERY] <query>
* }}}
*/
-case class DescribeTableCommand(
- table: TableIdentifier,
+case class DescribeTableOrQueryCommand(
Review comment:
shall we create 2 commands?
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