beliefer commented on a change in pull request #31548:
URL: https://github.com/apache/spark/pull/31548#discussion_r578100090
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/unresolved.scala
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@@ -136,6 +136,29 @@ case class UnresolvedTableValuedFunction(
override lazy val resolved = false
}
+/**
+ * A table-valued command, e.g.
+ * {{{
+ * select tableName from command("show tables");
Review comment:
First, this PR references the table-valued-function. So, I call the
syntax is table-valued-command.
Second, Users want use filter clause, group by, ... on table-valued-command.
In fact, This PR adopt the syntax-based approach is much simpler than built-in
function.
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