Github user apivovarov commented on a diff in the pull request:
https://github.com/apache/flink/pull/2485#discussion_r78270846
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/api/table/StreamTableEnvironment.scala
---
@@ -271,5 +271,21 @@ abstract class StreamTableEnvironment(
}
}
+ /*
+ * Returns the AST of the specified Table API and SQL queries and the
execution plan to compute
+ * the result of the given [[Table]].
+ *
+ * @param table The table for which the AST and execution plan will be
returned.
+ * @param extended Flag to include detailed optimizer estimates.
+ */
+ def explain(table: Table): String = {
+
+ val ast = RelOptUtil.toString(table.getRelNode)
+
+ s"== Abstract Syntax Tree ==" +
+ System.lineSeparator +
+ s"$ast"
--- End diff --
No need for s on line 285
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