wgy8283335 commented on a change in pull request #11487:
URL: https://github.com/apache/shardingsphere/pull/11487#discussion_r676057850
##########
File path:
shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-oracle/src/main/antlr4/imports/oracle/DDLStatement.g4
##########
@@ -1893,3 +1889,17 @@ comment
| TABLE (tableName | viewName)
) IS STRING_
;
+
+flashbackDatabase
+ : FLASHBACK STANDBY? PLUGGABLE? DATABASE databaseName?
+ ( TO (scnTimestampClause | restorePointClause)
+ | TO BEFORE (scnTimestampClause | RESETLOGS))
+ ;
+
+scnTimestampClause
+ : (SCN | TIMESTAMP) scnValue
Review comment:
##########
File path:
shardingsphere-sql-parser/shardingsphere-sql-parser-statement/src/main/java/org/apache/shardingsphere/sql/parser/sql/dialect/statement/oracle/ddl/OracleFlashbackDatabaseStatement.java
##########
@@ -0,0 +1,30 @@
+/*
+ * 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.shardingsphere.sql.parser.sql.dialect.statement.oracle.ddl;
+
+import lombok.ToString;
+import
org.apache.shardingsphere.sql.parser.sql.common.statement.AbstractSQLStatement;
+import
org.apache.shardingsphere.sql.parser.sql.common.statement.ddl.DDLStatement;
+import
org.apache.shardingsphere.sql.parser.sql.dialect.statement.oracle.OracleStatement;
+
+/**
+ * Oracle flashback database statement.
+ */
+@ToString
+public class OracleFlashbackDatabaseStatement extends AbstractSQLStatement
implements DDLStatement, OracleStatement {
Review comment:
Maybe DCLStatement is better.
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