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The following commit(s) were added to refs/heads/master by this push:
     new 3b8dc82  Add create conversion SQL parser for PostgreSQL & openGauss. 
(#14333)
3b8dc82 is described below

commit 3b8dc82bfb8691f52f221ae394587bcfc03bfa9b
Author: Zonglei Dong <[email protected]>
AuthorDate: Mon Dec 27 09:15:56 2021 +0800

    Add create conversion SQL parser for PostgreSQL & openGauss. (#14333)
    
    * Add create conversion SQL parser for PostgreSQL & openGauss.
    
    * Add create conversion SQL parser test case for PostgreSQL & openGauss.
    
    * Support create conversion, remove from unsupported.xml.
    
    * Add create conversion SQL visitor rule.
---
 .../sql/parser/autogen/OpenGaussStatement.g4       |  1 +
 .../impl/OpenGaussDDLStatementSQLVisitor.java      |  7 ++++++
 .../sql/parser/autogen/PostgreSQLStatement.g4      |  1 +
 .../impl/PostgreSQLDDLStatementSQLVisitor.java     |  7 ++++++
 .../core/database/visitor/SQLVisitorRule.java      |  4 ++-
 .../statement/ddl/CreateConversionStatement.java   | 28 +++++++++++++++++++++
 .../ddl/OpenGaussCreateConversionStatement.java    | 29 ++++++++++++++++++++++
 .../ddl/PostgreSQLCreateConversionStatement.java   | 29 ++++++++++++++++++++++
 .../main/resources/case/ddl/create-conversion.xml  | 22 ++++++++++++++++
 .../sql/supported/ddl/create-conversion.xml        | 22 ++++++++++++++++
 .../main/resources/sql/unsupported/unsupported.xml |  1 -
 11 files changed, 149 insertions(+), 2 deletions(-)

diff --git 
a/shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-opengauss/src/main/antlr4/org/apache/shardingsphere/sql/parser/autogen/OpenGaussStatement.g4
 
b/shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-opengauss/src/main/antlr4/org/apache/shardingsphere/sql/parser/autogen/OpenGaussStatement.g4
index bedc46c..42f0817 100644
--- 
a/shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-opengauss/src/main/antlr4/org/apache/shardingsphere/sql/parser/autogen/OpenGaussStatement.g4
+++ 
b/shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-opengauss/src/main/antlr4/org/apache/shardingsphere/sql/parser/autogen/OpenGaussStatement.g4
@@ -92,5 +92,6 @@ execute
     | createLanguage
     | alterLanguage
     | dropLanguage
+    | createConversion
     ) SEMI_?
     ;
diff --git 
a/shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-opengauss/src/main/java/org/apache/shardingsphere/sql/parser/opengauss/visitor/statement/impl/OpenGaussDDLStatementSQLVisitor.java
 
b/shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-opengauss/src/main/java/org/apache/shardingsphere/sql/parser/opengauss/visitor/statement/impl/OpenGaussDDLStatementSQLVisitor.java
index ec84448..5d224f9 100644
--- 
a/shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-opengauss/src/main/java/org/apache/shardingsphere/sql/parser/opengauss/visitor/statement/impl/OpenGaussDDLStatementSQLVisitor.java
+++ 
b/shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-opengauss/src/main/java/org/apache/shardingsphere/sql/parser/opengauss/visitor/statement/impl/OpenGaussDDLStatementSQLVisitor.java
@@ -35,6 +35,7 @@ import 
org.apache.shardingsphere.sql.parser.autogen.OpenGaussStatementParser.Alt
 import 
org.apache.shardingsphere.sql.parser.autogen.OpenGaussStatementParser.AlterViewContext;
 import 
org.apache.shardingsphere.sql.parser.autogen.OpenGaussStatementParser.ColumnConstraintContext;
 import 
org.apache.shardingsphere.sql.parser.autogen.OpenGaussStatementParser.ColumnDefinitionContext;
+import 
org.apache.shardingsphere.sql.parser.autogen.OpenGaussStatementParser.CreateConversionContext;
 import 
org.apache.shardingsphere.sql.parser.autogen.OpenGaussStatementParser.CreateDatabaseContext;
 import 
org.apache.shardingsphere.sql.parser.autogen.OpenGaussStatementParser.CreateDefinitionClauseContext;
 import 
org.apache.shardingsphere.sql.parser.autogen.OpenGaussStatementParser.CreateDefinitionContext;
@@ -111,6 +112,7 @@ import 
org.apache.shardingsphere.sql.parser.sql.dialect.statement.opengauss.ddl.
 import 
org.apache.shardingsphere.sql.parser.sql.dialect.statement.opengauss.ddl.OpenGaussAlterTableStatement;
 import 
org.apache.shardingsphere.sql.parser.sql.dialect.statement.opengauss.ddl.OpenGaussAlterTablespaceStatement;
 import 
org.apache.shardingsphere.sql.parser.sql.dialect.statement.opengauss.ddl.OpenGaussAlterViewStatement;
+import 
org.apache.shardingsphere.sql.parser.sql.dialect.statement.opengauss.ddl.OpenGaussCreateConversionStatement;
 import 
org.apache.shardingsphere.sql.parser.sql.dialect.statement.opengauss.ddl.OpenGaussCreateDatabaseStatement;
 import 
org.apache.shardingsphere.sql.parser.sql.dialect.statement.opengauss.ddl.OpenGaussCreateDomainStatement;
 import 
org.apache.shardingsphere.sql.parser.sql.dialect.statement.opengauss.ddl.OpenGaussCreateFunctionStatement;
@@ -604,4 +606,9 @@ public final class OpenGaussDDLStatementSQLVisitor extends 
OpenGaussStatementSQL
     public ASTNode visitDropLanguage(final DropLanguageContext ctx) {
         return new OpenGaussDropLanguageStatement();
     }
+    
+    @Override
+    public ASTNode visitCreateConversion(final CreateConversionContext ctx) {
+        return new OpenGaussCreateConversionStatement();
+    }
 }
diff --git 
a/shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-postgresql/src/main/antlr4/org/apache/shardingsphere/sql/parser/autogen/PostgreSQLStatement.g4
 
b/shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-postgresql/src/main/antlr4/org/apache/shardingsphere/sql/parser/autogen/PostgreSQLStatement.g4
index 5e11e84..15300bf 100644
--- 
a/shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-postgresql/src/main/antlr4/org/apache/shardingsphere/sql/parser/autogen/PostgreSQLStatement.g4
+++ 
b/shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-postgresql/src/main/antlr4/org/apache/shardingsphere/sql/parser/autogen/PostgreSQLStatement.g4
@@ -92,5 +92,6 @@ execute
     | createLanguage
     | alterLanguage
     | dropLanguage
+    | createConversion
     ) SEMI_?
     ;
diff --git 
a/shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-postgresql/src/main/java/org/apache/shardingsphere/sql/parser/postgresql/visitor/statement/impl/PostgreSQLDDLStatementSQLVisitor.java
 
b/shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-postgresql/src/main/java/org/apache/shardingsphere/sql/parser/postgresql/visitor/statement/impl/PostgreSQLDDLStatementSQLVisitor.java
index 398acc9..bceff9a 100644
--- 
a/shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-postgresql/src/main/java/org/apache/shardingsphere/sql/parser/postgresql/visitor/statement/impl/PostgreSQLDDLStatementSQLVisitor.java
+++ 
b/shardingsphere-sql-parser/shardingsphere-sql-parser-dialect/shardingsphere-sql-parser-postgresql/src/main/java/org/apache/shardingsphere/sql/parser/postgresql/visitor/statement/impl/PostgreSQLDDLStatementSQLVisitor.java
@@ -35,6 +35,7 @@ import 
org.apache.shardingsphere.sql.parser.autogen.PostgreSQLStatementParser.Al
 import 
org.apache.shardingsphere.sql.parser.autogen.PostgreSQLStatementParser.AlterViewContext;
 import 
org.apache.shardingsphere.sql.parser.autogen.PostgreSQLStatementParser.ColumnConstraintContext;
 import 
org.apache.shardingsphere.sql.parser.autogen.PostgreSQLStatementParser.ColumnDefinitionContext;
+import 
org.apache.shardingsphere.sql.parser.autogen.PostgreSQLStatementParser.CreateConversionContext;
 import 
org.apache.shardingsphere.sql.parser.autogen.PostgreSQLStatementParser.CreateDatabaseContext;
 import 
org.apache.shardingsphere.sql.parser.autogen.PostgreSQLStatementParser.CreateDefinitionClauseContext;
 import 
org.apache.shardingsphere.sql.parser.autogen.PostgreSQLStatementParser.CreateDefinitionContext;
@@ -111,6 +112,7 @@ import 
org.apache.shardingsphere.sql.parser.sql.dialect.statement.postgresql.ddl
 import 
org.apache.shardingsphere.sql.parser.sql.dialect.statement.postgresql.ddl.PostgreSQLAlterTableStatement;
 import 
org.apache.shardingsphere.sql.parser.sql.dialect.statement.postgresql.ddl.PostgreSQLAlterTablespaceStatement;
 import 
org.apache.shardingsphere.sql.parser.sql.dialect.statement.postgresql.ddl.PostgreSQLAlterViewStatement;
+import 
org.apache.shardingsphere.sql.parser.sql.dialect.statement.postgresql.ddl.PostgreSQLCreateConversionStatement;
 import 
org.apache.shardingsphere.sql.parser.sql.dialect.statement.postgresql.ddl.PostgreSQLCreateDatabaseStatement;
 import 
org.apache.shardingsphere.sql.parser.sql.dialect.statement.postgresql.ddl.PostgreSQLCreateDomainStatement;
 import 
org.apache.shardingsphere.sql.parser.sql.dialect.statement.postgresql.ddl.PostgreSQLCreateFunctionStatement;
@@ -604,4 +606,9 @@ public final class PostgreSQLDDLStatementSQLVisitor extends 
PostgreSQLStatementS
     public ASTNode visitDropLanguage(final DropLanguageContext ctx) {
         return new PostgreSQLDropLanguageStatement();
     }
+    
+    @Override
+    public ASTNode visitCreateConversion(final CreateConversionContext ctx) {
+        return new PostgreSQLCreateConversionStatement();
+    }
 }
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 7f10cf9..80c68e9 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
@@ -368,7 +368,9 @@ public enum SQLVisitorRule {
     
     ALTER_LANGUAGE("AlterLanguage", SQLStatementType.DDL),
     
-    DROP_LANGUAGE("DropLanguage", SQLStatementType.DDL);
+    DROP_LANGUAGE("DropLanguage", SQLStatementType.DDL),
+    
+    CREATE_CONVERSION("CreateConversion", SQLStatementType.DDL);
 
     private final String name;
     
diff --git 
a/shardingsphere-sql-parser/shardingsphere-sql-parser-statement/src/main/java/org/apache/shardingsphere/sql/parser/sql/common/statement/ddl/CreateConversionStatement.java
 
b/shardingsphere-sql-parser/shardingsphere-sql-parser-statement/src/main/java/org/apache/shardingsphere/sql/parser/sql/common/statement/ddl/CreateConversionStatement.java
new file mode 100644
index 0000000..e18fb6f
--- /dev/null
+++ 
b/shardingsphere-sql-parser/shardingsphere-sql-parser-statement/src/main/java/org/apache/shardingsphere/sql/parser/sql/common/statement/ddl/CreateConversionStatement.java
@@ -0,0 +1,28 @@
+/*
+ * 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.common.statement.ddl;
+
+import lombok.ToString;
+import 
org.apache.shardingsphere.sql.parser.sql.common.statement.AbstractSQLStatement;
+
+/**
+ * Create conversion statement.
+ */
+@ToString
+public abstract class CreateConversionStatement extends AbstractSQLStatement 
implements DDLStatement {
+}
diff --git 
a/shardingsphere-sql-parser/shardingsphere-sql-parser-statement/src/main/java/org/apache/shardingsphere/sql/parser/sql/dialect/statement/opengauss/ddl/OpenGaussCreateConversionStatement.java
 
b/shardingsphere-sql-parser/shardingsphere-sql-parser-statement/src/main/java/org/apache/shardingsphere/sql/parser/sql/dialect/statement/opengauss/ddl/OpenGaussCreateConversionStatement.java
new file mode 100644
index 0000000..50d27e2
--- /dev/null
+++ 
b/shardingsphere-sql-parser/shardingsphere-sql-parser-statement/src/main/java/org/apache/shardingsphere/sql/parser/sql/dialect/statement/opengauss/ddl/OpenGaussCreateConversionStatement.java
@@ -0,0 +1,29 @@
+/*
+ * 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.opengauss.ddl;
+
+import lombok.ToString;
+import 
org.apache.shardingsphere.sql.parser.sql.common.statement.ddl.CreateConversionStatement;
+import 
org.apache.shardingsphere.sql.parser.sql.dialect.statement.opengauss.OpenGaussStatement;
+
+/**
+ * OpenGauss create conversion statement.
+ */
+@ToString
+public final class OpenGaussCreateConversionStatement extends 
CreateConversionStatement implements OpenGaussStatement {
+}
diff --git 
a/shardingsphere-sql-parser/shardingsphere-sql-parser-statement/src/main/java/org/apache/shardingsphere/sql/parser/sql/dialect/statement/postgresql/ddl/PostgreSQLCreateConversionStatement.java
 
b/shardingsphere-sql-parser/shardingsphere-sql-parser-statement/src/main/java/org/apache/shardingsphere/sql/parser/sql/dialect/statement/postgresql/ddl/PostgreSQLCreateConversionStatement.java
new file mode 100644
index 0000000..0773fe6
--- /dev/null
+++ 
b/shardingsphere-sql-parser/shardingsphere-sql-parser-statement/src/main/java/org/apache/shardingsphere/sql/parser/sql/dialect/statement/postgresql/ddl/PostgreSQLCreateConversionStatement.java
@@ -0,0 +1,29 @@
+/*
+ * 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.postgresql.ddl;
+
+import lombok.ToString;
+import 
org.apache.shardingsphere.sql.parser.sql.common.statement.ddl.CreateConversionStatement;
+import 
org.apache.shardingsphere.sql.parser.sql.dialect.statement.postgresql.PostgreSQLStatement;
+
+/**
+ * PostgreSQL create conversion statement.
+ */
+@ToString
+public final class PostgreSQLCreateConversionStatement extends 
CreateConversionStatement implements PostgreSQLStatement {
+}
diff --git 
a/shardingsphere-test/shardingsphere-parser-test/src/main/resources/case/ddl/create-conversion.xml
 
b/shardingsphere-test/shardingsphere-parser-test/src/main/resources/case/ddl/create-conversion.xml
new file mode 100644
index 0000000..f501439
--- /dev/null
+++ 
b/shardingsphere-test/shardingsphere-parser-test/src/main/resources/case/ddl/create-conversion.xml
@@ -0,0 +1,22 @@
+<?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>
+    <create-trigger sql-case-id="create_conversion" />
+    <create-trigger sql-case-id="create_conversion_default" />
+</sql-parser-test-cases>
diff --git 
a/shardingsphere-test/shardingsphere-parser-test/src/main/resources/sql/supported/ddl/create-conversion.xml
 
b/shardingsphere-test/shardingsphere-parser-test/src/main/resources/sql/supported/ddl/create-conversion.xml
new file mode 100644
index 0000000..828fc92
--- /dev/null
+++ 
b/shardingsphere-test/shardingsphere-parser-test/src/main/resources/sql/supported/ddl/create-conversion.xml
@@ -0,0 +1,22 @@
+<?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="create_conversion" value="CREATE CONVERSION myconv FOR 
'UTF8' TO 'LATIN1' FROM myfunc" db-types="PostgreSQL,openGauss" />
+    <sql-case id="create_conversion_default" value="CREATE DEFAULT CONVERSION 
myconv FOR 'UTF8' TO 'LATIN1' FROM myfunc" db-types="PostgreSQL,openGauss" />
+</sql-cases>
diff --git 
a/shardingsphere-test/shardingsphere-parser-test/src/main/resources/sql/unsupported/unsupported.xml
 
b/shardingsphere-test/shardingsphere-parser-test/src/main/resources/sql/unsupported/unsupported.xml
index 2b80b37..35f5841 100644
--- 
a/shardingsphere-test/shardingsphere-parser-test/src/main/resources/sql/unsupported/unsupported.xml
+++ 
b/shardingsphere-test/shardingsphere-parser-test/src/main/resources/sql/unsupported/unsupported.xml
@@ -39,7 +39,6 @@
     <sql-case id="create_aggregate" value="create aggregate my_avg(int4) 
(stype = avg_state, sfunc = avg_transfn, finalfunc = avg_finalfn)" 
db-types="PostgreSQL"/>
     <sql-case id="create_table_as_select" value="create table agg_data_2k as 
select g from generate_series(0, 1999) g;" db-types="PostgreSQL" />
     <sql-case id="alter_aggregate" value="ALTER AGGREGATE alt_agg3(int) OWNER 
TO regress_alter_generic_user2;" db-types="PostgreSQL" />
-    <sql-case id="create_conversion" value="CREATE CONVERSION alt_conv1 FOR 
'LATIN1' TO 'UTF8' FROM iso8859_1_to_utf8;" db-types="PostgreSQL" />
     <sql-case id="alter_conversion" value="ALTER CONVERSION alt_conv1 RENAME 
TO alt_conv2;" db-types="PostgreSQL" />
     <sql-case id="create_foreign_data_wrapper" value="CREATE FOREIGN DATA 
WRAPPER alt_fdw1" db-types="PostgreSQL" />
     <sql-case id="create_server" value="CREATE SERVER alt_fserv1 FOREIGN DATA 
WRAPPER alt_fdw1;" db-types="PostgreSQL" />

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