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The following commit(s) were added to refs/heads/master by this push:
     new c3757f3  Add Oracle SQL - FLASHBACK DATABASE (#11487)
c3757f3 is described below

commit c3757f3566c2a344ae77b74bb0df91a99e3fca03
Author: Liangda-w <[email protected]>
AuthorDate: Tue Jul 27 02:04:36 2021 +0200

    Add Oracle SQL - FLASHBACK DATABASE (#11487)
    
    * Add Oracle SQL - FLASHBACK DATABASE
    
    * Add new line
    
    * modifiy expr
---
 .../src/main/antlr4/imports/oracle/BaseRule.g4     | 14 +++++-
 .../src/main/antlr4/imports/oracle/DDLStatement.g4 | 18 ++++++--
 .../main/antlr4/imports/oracle/OracleKeyword.g4    | 12 +++++
 .../sql/parser/autogen/OracleStatement.g4          |  1 +
 .../impl/OracleDDLStatementSQLVisitor.java         |  7 +++
 .../core/database/visitor/SQLVisitorRule.java      |  2 +
 .../ddl/OracleFlashbackDatabaseStatement.java}     | 53 +++++-----------------
 .../jaxb/cases/domain/SQLParserTestCases.java      |  5 ++
 .../ddl/FlashbackDatabaseStatementTestCase.java    | 49 +++-----------------
 .../main/resources/case/ddl/flashback-database.xml | 24 ++++++++++
 .../sql/supported/ddl/flashback-database.xml       | 24 ++++++++++
 11 files changed, 120 insertions(+), 89 deletions(-)

diff --git 
a/shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-oracle/src/main/antlr4/imports/oracle/BaseRule.g4
 
b/shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-oracle/src/main/antlr4/imports/oracle/BaseRule.g4
index 14e3d88..b3f4d89 100644
--- 
a/shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-oracle/src/main/antlr4/imports/oracle/BaseRule.g4
+++ 
b/shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-oracle/src/main/antlr4/imports/oracle/BaseRule.g4
@@ -96,7 +96,7 @@ unreservedWord
     | BECOME | CHANGE | NOTIFICATION | PRIVILEGE | PURGE | RESUMABLE
     | SYSGUID | SYSBACKUP | SYSDBA | SYSDG | SYSKM | SYSOPER | DBA_RECYCLEBIN 
|SCHEMA
     | DO | DEFINER | CURRENT_USER | CASCADED | CLOSE | OPEN | NEXT | NAME | 
NAMES
-    | COLLATION | REAL | TYPE | FIRST | RANK
+    | COLLATION | REAL | TYPE | FIRST | RANK | SAMPLE
     ;
 
 schemaName
@@ -815,3 +815,15 @@ seedValue
 namespace
     : identifier
     ;
+
+restorePoint
+    : identifier
+    ;
+
+scnValue
+    : literals
+    ;
+
+scnTimestampExpr
+    : scnValue | identifier
+    ;
diff --git 
a/shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-oracle/src/main/antlr4/imports/oracle/DDLStatement.g4
 
b/shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-oracle/src/main/antlr4/imports/oracle/DDLStatement.g4
index 6c27202..2ab7723 100644
--- 
a/shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-oracle/src/main/antlr4/imports/oracle/DDLStatement.g4
+++ 
b/shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-oracle/src/main/antlr4/imports/oracle/DDLStatement.g4
@@ -1444,10 +1444,6 @@ startStandbyClause
     : START LOGICAL STANDBY APPLY IMMEDIATE? NODELAY? (NEW PRIMARY dbLink | 
INITIAL scnValue? | (SKIP_SYMBOL FAILED TRANSACTION | FINISH))?
     ;
 
-scnValue
-    : literals
-    ;
-
 stopStandbyClause
     : (STOP | ABORT) LOGICAL STANDBY APPLY
     ;
@@ -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) scnTimestampExpr
+    ;
+
+restorePointClause
+    : RESTORE POINT restorePoint
+    ;
diff --git 
a/shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-oracle/src/main/antlr4/imports/oracle/OracleKeyword.g4
 
b/shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-oracle/src/main/antlr4/imports/oracle/OracleKeyword.g4
index 43f7a9c..8cde546 100644
--- 
a/shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-oracle/src/main/antlr4/imports/oracle/OracleKeyword.g4
+++ 
b/shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-oracle/src/main/antlr4/imports/oracle/OracleKeyword.g4
@@ -2386,3 +2386,15 @@ SETS
 DECODE
     : D E C O D E
     ;
+
+RESTORE
+    : R E S T O R E
+    ;
+
+POINT
+    : P O I N T
+    ;
+
+BEFORE
+    : B E F O R E
+    ;
diff --git 
a/shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-oracle/src/main/antlr4/org/apache/shardingsphere/sql/parser/autogen/OracleStatement.g4
 
b/shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-oracle/src/main/antlr4/org/apache/shardingsphere/sql/parser/autogen/OracleStatement.g4
index 1e45a5a..0e14013 100644
--- 
a/shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-oracle/src/main/antlr4/org/apache/shardingsphere/sql/parser/autogen/OracleStatement.g4
+++ 
b/shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-oracle/src/main/antlr4/org/apache/shardingsphere/sql/parser/autogen/OracleStatement.g4
@@ -57,5 +57,6 @@ execute
     | audit
     | noAudit
     | comment
+    | flashbackDatabase
     ) SEMI_?
     ;
diff --git 
a/shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-oracle/src/main/java/org/apache/shardingsphere/sql/parser/oracle/visitor/statement/impl/OracleDDLStatementSQLVisitor.java
 
b/shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-oracle/src/main/java/org/apache/shardingsphere/sql/parser/oracle/visitor/statement/impl/OracleDDLStatementSQLVisitor.java
index 1719fc0..63fe451 100644
--- 
a/shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-oracle/src/main/java/org/apache/shardingsphere/sql/parser/oracle/visitor/statement/impl/OracleDDLStatementSQLVisitor.java
+++ 
b/shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-oracle/src/main/java/org/apache/shardingsphere/sql/parser/oracle/visitor/statement/impl/OracleDDLStatementSQLVisitor.java
@@ -46,6 +46,7 @@ import 
org.apache.shardingsphere.sql.parser.autogen.OracleStatementParser.DropCo
 import 
org.apache.shardingsphere.sql.parser.autogen.OracleStatementParser.DropConstraintClauseContext;
 import 
org.apache.shardingsphere.sql.parser.autogen.OracleStatementParser.DropIndexContext;
 import 
org.apache.shardingsphere.sql.parser.autogen.OracleStatementParser.DropTableContext;
+import 
org.apache.shardingsphere.sql.parser.autogen.OracleStatementParser.FlashbackDatabaseContext;
 import 
org.apache.shardingsphere.sql.parser.autogen.OracleStatementParser.IndexNameContext;
 import 
org.apache.shardingsphere.sql.parser.autogen.OracleStatementParser.InlineConstraintContext;
 import 
org.apache.shardingsphere.sql.parser.autogen.OracleStatementParser.ModifyColPropertiesContext;
@@ -89,6 +90,7 @@ import 
org.apache.shardingsphere.sql.parser.sql.dialect.statement.oracle.ddl.Ora
 import 
org.apache.shardingsphere.sql.parser.sql.dialect.statement.oracle.ddl.OracleDisassociateStatisticsStatement;
 import 
org.apache.shardingsphere.sql.parser.sql.dialect.statement.oracle.ddl.OracleDropIndexStatement;
 import 
org.apache.shardingsphere.sql.parser.sql.dialect.statement.oracle.ddl.OracleDropTableStatement;
+import 
org.apache.shardingsphere.sql.parser.sql.dialect.statement.oracle.ddl.OracleFlashbackDatabaseStatement;
 import 
org.apache.shardingsphere.sql.parser.sql.dialect.statement.oracle.ddl.OracleNoAuditStatement;
 import 
org.apache.shardingsphere.sql.parser.sql.dialect.statement.oracle.ddl.OracleTruncateStatement;
 
@@ -461,4 +463,9 @@ public final class OracleDDLStatementSQLVisitor extends 
OracleStatementSQLVisito
         }
         return result;
     }
+
+    @Override
+    public ASTNode visitFlashbackDatabase(final FlashbackDatabaseContext ctx) {
+        return new OracleFlashbackDatabaseStatement();
+    }
 }
diff --git 
a/shardingsphere-sql-parser/shardingsphere-sql-parser-engine/src/main/java/org/apache/shardingsphere/sql/parser/core/database/visitor/SQLVisitorRule.java
 
b/shardingsphere-sql-parser/shardingsphere-sql-parser-engine/src/main/java/org/apache/shardingsphere/sql/parser/core/database/visitor/SQLVisitorRule.java
index 838d76a..c5d0a55 100644
--- 
a/shardingsphere-sql-parser/shardingsphere-sql-parser-engine/src/main/java/org/apache/shardingsphere/sql/parser/core/database/visitor/SQLVisitorRule.java
+++ 
b/shardingsphere-sql-parser/shardingsphere-sql-parser-engine/src/main/java/org/apache/shardingsphere/sql/parser/core/database/visitor/SQLVisitorRule.java
@@ -139,6 +139,8 @@ public enum SQLVisitorRule {
     NOAUDIT("NoAudit", SQLStatementType.DDL),
 
     COMMENT("Comment", SQLStatementType.DDL),
+
+    FLASHBACK_DATABASE("FlashbackDatabase", SQLStatementType.DDL),
     
     SET_CONSTRAINTS("SetConstraints", SQLStatementType.TCL),
     
diff --git 
a/shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-oracle/src/main/antlr4/org/apache/shardingsphere/sql/parser/autogen/OracleStatement.g4
 
b/shardingsphere-sql-parser/shardingsphere-sql-parser-statement/src/main/java/org/apache/shardingsphere/sql/parser/sql/dialect/statement/oracle/ddl/OracleFlashbackDatabaseStatement.java
similarity index 51%
copy from 
shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-oracle/src/main/antlr4/org/apache/shardingsphere/sql/parser/autogen/OracleStatement.g4
copy to 
shardingsphere-sql-parser/shardingsphere-sql-parser-statement/src/main/java/org/apache/shardingsphere/sql/parser/sql/dialect/statement/oracle/ddl/OracleFlashbackDatabaseStatement.java
index 1e45a5a..e247650 100644
--- 
a/shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-oracle/src/main/antlr4/org/apache/shardingsphere/sql/parser/autogen/OracleStatement.g4
+++ 
b/shardingsphere-sql-parser/shardingsphere-sql-parser-statement/src/main/java/org/apache/shardingsphere/sql/parser/sql/dialect/statement/oracle/ddl/OracleFlashbackDatabaseStatement.java
@@ -15,47 +15,16 @@
  * limitations under the License.
  */
 
-grammar OracleStatement;
+package org.apache.shardingsphere.sql.parser.sql.dialect.statement.oracle.ddl;
 
-import Symbol, Comments, DMLStatement, DDLStatement, TCLStatement, 
DCLStatement, StoreProcedure;
+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;
 
-execute
-    : (select
-    | insert
-    | update
-    | delete
-    | createTable
-    | alterTable
-    | dropTable
-    | truncateTable
-    | createIndex
-    | dropIndex
-    | alterIndex
-    | commit
-    | rollback
-    | setTransaction
-    | savepoint
-    | grant
-    | revoke
-    | createUser
-    | dropUser
-    | alterUser
-    | createRole
-    | dropRole
-    | alterRole
-    | setRole
-    | call
-    | merge
-    | alterSynonym
-    | alterSession
-    | alterDatabase
-    | alterSystem
-    | setConstraints
-    | analyze
-    | associateStatistics
-    | disassociateStatistics
-    | audit
-    | noAudit
-    | comment
-    ) SEMI_?
-    ;
+/**
+ * Oracle flashback database statement.
+ */
+@ToString
+public class OracleFlashbackDatabaseStatement extends AbstractSQLStatement 
implements DDLStatement, OracleStatement {
+}
diff --git 
a/shardingsphere-test/shardingsphere-parser-test/src/main/java/org/apache/shardingsphere/test/sql/parser/parameterized/jaxb/cases/domain/SQLParserTestCases.java
 
b/shardingsphere-test/shardingsphere-parser-test/src/main/java/org/apache/shardingsphere/test/sql/parser/parameterized/jaxb/cases/domain/SQLParserTestCases.java
index 4964916..593a62c 100644
--- 
a/shardingsphere-test/shardingsphere-parser-test/src/main/java/org/apache/shardingsphere/test/sql/parser/parameterized/jaxb/cases/domain/SQLParserTestCases.java
+++ 
b/shardingsphere-test/shardingsphere-parser-test/src/main/java/org/apache/shardingsphere/test/sql/parser/parameterized/jaxb/cases/domain/SQLParserTestCases.java
@@ -80,6 +80,7 @@ import 
org.apache.shardingsphere.test.sql.parser.parameterized.jaxb.cases.domain
 import 
org.apache.shardingsphere.test.sql.parser.parameterized.jaxb.cases.domain.statement.ddl.DropTableStatementTestCase;
 import 
org.apache.shardingsphere.test.sql.parser.parameterized.jaxb.cases.domain.statement.ddl.DropTriggerStatementTestCase;
 import 
org.apache.shardingsphere.test.sql.parser.parameterized.jaxb.cases.domain.statement.ddl.DropViewStatementTestCase;
+import 
org.apache.shardingsphere.test.sql.parser.parameterized.jaxb.cases.domain.statement.ddl.FlashbackDatabaseStatementTestCase;
 import 
org.apache.shardingsphere.test.sql.parser.parameterized.jaxb.cases.domain.statement.ddl.NoAuditStatementTestCase;
 import 
org.apache.shardingsphere.test.sql.parser.parameterized.jaxb.cases.domain.statement.ddl.TruncateStatementTestCase;
 import 
org.apache.shardingsphere.test.sql.parser.parameterized.jaxb.cases.domain.statement.distsql.ral.ShowScalingJobListStatementTestCase;
@@ -367,6 +368,9 @@ public final class SQLParserTestCases {
 
     @XmlElement(name = "comment")
     private final List<CommentStatementTestCase> commentTestCase = new 
LinkedList<>();
+
+    @XmlElement(name = "flashback-database")
+    private final List<FlashbackDatabaseStatementTestCase> 
flashbackDatabaseTestCase = new LinkedList<>();
     
     @XmlElement(name = "add-resource")
     private final List<AddResourceStatementTestCase> addResourceTestCase = new 
LinkedList<>();
@@ -535,6 +539,7 @@ public final class SQLParserTestCases {
         putAll(auditTestCase, result);
         putAll(noAuditTestCase, result);
         putAll(commentTestCase, result);
+        putAll(flashbackDatabaseTestCase, result);
         putAll(addResourceTestCase, result);
         putAll(alterDataBaseDiscoveryRuleTestCase, result);
         putAll(alterEncryptRuleTestCase, result);
diff --git 
a/shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-oracle/src/main/antlr4/org/apache/shardingsphere/sql/parser/autogen/OracleStatement.g4
 
b/shardingsphere-test/shardingsphere-parser-test/src/main/java/org/apache/shardingsphere/test/sql/parser/parameterized/jaxb/cases/domain/statement/ddl/FlashbackDatabaseStatementTestCase.java
similarity index 51%
copy from 
shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-oracle/src/main/antlr4/org/apache/shardingsphere/sql/parser/autogen/OracleStatement.g4
copy to 
shardingsphere-test/shardingsphere-parser-test/src/main/java/org/apache/shardingsphere/test/sql/parser/parameterized/jaxb/cases/domain/statement/ddl/FlashbackDatabaseStatementTestCase.java
index 1e45a5a..09217ee 100644
--- 
a/shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-oracle/src/main/antlr4/org/apache/shardingsphere/sql/parser/autogen/OracleStatement.g4
+++ 
b/shardingsphere-test/shardingsphere-parser-test/src/main/java/org/apache/shardingsphere/test/sql/parser/parameterized/jaxb/cases/domain/statement/ddl/FlashbackDatabaseStatementTestCase.java
@@ -15,47 +15,12 @@
  * limitations under the License.
  */
 
-grammar OracleStatement;
+package 
org.apache.shardingsphere.test.sql.parser.parameterized.jaxb.cases.domain.statement.ddl;
 
-import Symbol, Comments, DMLStatement, DDLStatement, TCLStatement, 
DCLStatement, StoreProcedure;
+import 
org.apache.shardingsphere.test.sql.parser.parameterized.jaxb.cases.domain.statement.SQLParserTestCase;
 
-execute
-    : (select
-    | insert
-    | update
-    | delete
-    | createTable
-    | alterTable
-    | dropTable
-    | truncateTable
-    | createIndex
-    | dropIndex
-    | alterIndex
-    | commit
-    | rollback
-    | setTransaction
-    | savepoint
-    | grant
-    | revoke
-    | createUser
-    | dropUser
-    | alterUser
-    | createRole
-    | dropRole
-    | alterRole
-    | setRole
-    | call
-    | merge
-    | alterSynonym
-    | alterSession
-    | alterDatabase
-    | alterSystem
-    | setConstraints
-    | analyze
-    | associateStatistics
-    | disassociateStatistics
-    | audit
-    | noAudit
-    | comment
-    ) SEMI_?
-    ;
+/**
+ * Flashback database statement test case.
+ */
+public final class FlashbackDatabaseStatementTestCase extends 
SQLParserTestCase {
+}
diff --git 
a/shardingsphere-test/shardingsphere-parser-test/src/main/resources/case/ddl/flashback-database.xml
 
b/shardingsphere-test/shardingsphere-parser-test/src/main/resources/case/ddl/flashback-database.xml
new file mode 100644
index 0000000..89b8064
--- /dev/null
+++ 
b/shardingsphere-test/shardingsphere-parser-test/src/main/resources/case/ddl/flashback-database.xml
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ 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.
+  -->
+
+<sql-parser-test-cases>
+    <flashback-database sql-case-id="flashback_database_to_scn" />
+    <flashback-database sql-case-id="flashback_database_to_timestamp" />
+    <flashback-database sql-case-id="flashback_database_to_restore_point" />
+    <flashback-database sql-case-id="flashback_database_to_before_resetlogs" />
+</sql-parser-test-cases>
diff --git 
a/shardingsphere-test/shardingsphere-parser-test/src/main/resources/sql/supported/ddl/flashback-database.xml
 
b/shardingsphere-test/shardingsphere-parser-test/src/main/resources/sql/supported/ddl/flashback-database.xml
new file mode 100644
index 0000000..fde5aea
--- /dev/null
+++ 
b/shardingsphere-test/shardingsphere-parser-test/src/main/resources/sql/supported/ddl/flashback-database.xml
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ 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.
+  -->
+
+<sql-cases>
+    <sql-case id="flashback_database_to_scn" value="FLASHBACK STANDBY 
PLUGGABLE DATABASE TO SCN 1500" db-types="Oracle" />
+    <sql-case id="flashback_database_to_timestamp" value="FLASHBACK DATABASE 
TO TIMESTAMP SYSDATE-1" db-types="Oracle" />
+    <sql-case id="flashback_database_to_restore_point" value="FLASHBACK 
DATABASE sample TO RESTORE POINT good_data" db-types="Oracle" />
+    <sql-case id="flashback_database_to_before_resetlogs" value="FLASHBACK 
DATABASE TO BEFORE RESETLOGS" db-types="Oracle" />
+</sql-cases>

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