dawidwys commented on a change in pull request #8973:
[FLINK-13081][table-planner][table-api-java] Supports explain DAG plan
URL: https://github.com/apache/flink/pull/8973#discussion_r300248597
##########
File path:
flink-table/flink-table-api-java/src/main/java/org/apache/flink/table/api/TableEnvironment.java
##########
@@ -275,8 +275,28 @@
*
* @param table The table for which the AST and execution plan will be
returned.
*/
+ @Deprecated
String explain(Table table);
+ /**
+ * Returns the AST of the specified Table API and SQL queries and the
execution plan to compute
+ * the result of the given {@link Table}.
+ *
+ * @param table The table for which the AST and execution plan will be
returned.
+ * @param extended if the plan should contain additional properties
such as
+ * e.g. estimated cost, traits
+ */
+ String explain(Table table, boolean extended);
+
+ /**
+ * Returns the AST of the specified Table API and SQL queries and the
execution plan to compute
+ * the result of multiple-sinks plan.
+ *
+ * @param extended if the plan should contain additional properties
such as
+ * e.g. estimated cost, traits
+ */
+ String explain(boolean extended);
Review comment:
Let's add this in the second PR. We do not have the concept of lazy
evaluation yet.
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