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https://issues.apache.org/jira/browse/FLINK-3192?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15087696#comment-15087696
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ASF GitHub Bot commented on FLINK-3192:
---------------------------------------
Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/1477#discussion_r49096670
--- Diff:
flink-staging/flink-table/src/main/scala/org/apache/flink/api/table/parser/Nodes.java
---
@@ -0,0 +1,145 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.flink.api.table.parser;
--- End diff --
Please create a new package for the the explain classes called `explain`
> Add explain support to print ast and sql physical execution plan.
> ------------------------------------------------------------------
>
> Key: FLINK-3192
> URL: https://issues.apache.org/jira/browse/FLINK-3192
> Project: Flink
> Issue Type: New Feature
> Components: Table API
> Reporter: GaoLun
> Assignee: GaoLun
> Priority: Minor
> Labels: features
>
> Table API doesn't support sql-explanation now. Add the explain support to
> print ast (abstract syntax tree) and the physical execution plan of sql.
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