Github user wzhfy commented on a diff in the pull request:
https://github.com/apache/spark/pull/16422#discussion_r94106492
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/command/tables.scala ---
@@ -586,6 +587,122 @@ case class DescribeTableCommand(
}
}
+/**
+ * Command that looks like
+ * {{{
+ * DESCRIBE [EXTENDED|FORMATTED] table_name column_name;
+ * }}}
+ */
+case class DescribeColumnCommand(
+ table: TableIdentifier,
+ column: String,
+ isExtended: Boolean,
+ isFormatted: Boolean)
+ extends RunnableCommand {
+
+ override val output: Seq[Attribute] =
+ // Column names are based on Hive.
--- End diff --
I got these names by running hive. I can't find any document about the
names, but I'll add a link of the corresponding JIRA of Hive.
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