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From GitBox <...@apache.org>
Subject [GitHub] [flink] wuchong commented on a change in pull request #8548: [FLINK-6962] [table] Add a create table SQL DDL
Date Wed, 29 May 2019 09:06:12 GMT
wuchong commented on a change in pull request #8548: [FLINK-6962] [table] Add a create table
URL: https://github.com/apache/flink/pull/8548#discussion_r288464869

 File path: flink-table/flink-sql-parser/src/main/java/org/apache/flink/sql/parser/ddl/SqlHiddenColumn.java
 @@ -0,0 +1,103 @@
+ * 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.sql.parser.ddl;
+import org.apache.calcite.sql.SqlCall;
+import org.apache.calcite.sql.SqlIdentifier;
+import org.apache.calcite.sql.SqlKind;
+import org.apache.calcite.sql.SqlNode;
+import org.apache.calcite.sql.SqlOperator;
+import org.apache.calcite.sql.SqlSpecialOperator;
+import org.apache.calcite.sql.SqlWriter;
+import org.apache.calcite.sql.parser.SqlParserPos;
+import org.apache.calcite.sql.validate.SqlValidator;
+import org.apache.calcite.sql.validate.SqlValidatorScope;
+import org.apache.calcite.util.ImmutableNullableList;
+import java.util.List;
+import static java.util.Objects.requireNonNull;
+ * Sql hidden column sql call, a hidden column is excluded in select star.
+ */
+public class SqlHiddenColumn extends SqlCall {
 Review comment:
   Remove this file? It is not used. 

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