FlyingZC opened a new issue, #27654: URL: https://github.com/apache/shardingsphere/issues/27654
# Background Hi community, ShardingSphere parser engine helps users parse a SQL to get the AST (Abstract Syntax Tree) and visit this tree to get SQLStatement (Java Object). Currently, we are planning to enhance the support for openGauss SQL parsing in ShardingSphere. More details: https://shardingsphere.apache.org/document/current/en/reference/sharding/parse/ # Task This issue is to support more openGauss sql parse, as follows: ```sql public static void main(String[] args) throws SQLException { Connection conn = getConnect(); Statement statement = conn.createStatement(); statement.execute("insert into test (id,name) values (2,'zhangsan')"); PreparedStatement preparedStatement=conn.prepareStatement("select * from test;"); ResultSet resultSet=preparedStatement.executeQuery(); while (resultSet.next()){ System.out.println(resultSet.getObject("id")+" "+ resultSet.getObject("name")); } conn.close(); } public static Connection getConnect() { String driver = "org.opengauss.Driver"; String sourceURL = "jdbc:opengauss://127.0.0.1:8080/test?user=myuser&password=myPassWord"; Properties info = new Properties(); Connection conn = null; try { Class.forName(driver); } catch (Exception var9) { var9.printStackTrace(); return null; } try { conn = DriverManager.getConnection(sourceURL); System.out.println("连接成功！"); return conn; } catch (Exception var8) { var8.printStackTrace(); return null; ``` ```sql import java.sql.Connection; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; import java.sql.Statement; import java.util.Properties; public class JdbcConn { public static void main(String[] args) throws SQLException { Connection conn = getConnect(); Statement statement = conn.createStatement(); PreparedStatement preparedStatement=conn.prepareStatement("insert into test (id,name) values (3,'zhaoliu')"); preparedStatement.execute(); preparedStatement=conn.prepareStatement("select * from test;"); ResultSet resultSet=preparedStatement.executeQuery(); while (resultSet.next()){ System.out.println(resultSet.getObject("id")+" "+ resultSet.getObject("name")); } conn.close(); } public static Connection getConnect() { String driver = "org.opengauss.Driver"; String sourceURL = "jdbc:opengauss://127.0.0.1:8080/test?user=myuser&password=myPassWord"; Properties info = new Properties(); Connection conn = null; try { Class.forName(driver); } catch (Exception var9) { var9.printStackTrace(); return null; } try { conn = DriverManager.getConnection(sourceURL); System.out.println("连接成功！"); return conn; } catch (Exception var8) { var8.printStackTrace(); return null; ``` ```sql public static void main(String[] args) throws SQLException { Connection conn = getConnect(); PreparedStatement preparedStatement=conn.prepareStatement("select * from test where id=?;"); preparedStatement.setObject(1,1); ResultSet resultSet=preparedStatement.executeQuery(); while (resultSet.next()){ System.out.println(resultSet.getObject("id")+" "+ resultSet.getObject("name")); } conn.close(); } public static Connection getConnect() { String driver = "org.opengauss.Driver"; String sourceURL = "jdbc:opengauss://127.0.0.1:8080/test?user=myuser&password=myPassWord"; Properties info = new Properties(); Connection conn = null; try { Class.forName(driver); } catch (Exception var9) { var9.printStackTrace(); return null; } try { conn = DriverManager.getConnection(sourceURL); System.out.println("连接成功！"); return conn; } catch (Exception var8) { var8.printStackTrace(); return null; ``` ```sql public static void main(String[] args) throws SQLException { Connection conn = getConnect(); Statement statement = conn.createStatement(); ResultSet resultSet=statement.executeQuery("select * from test"); while (resultSet.next()){ System.out.println(resultSet.getObject("id")+" "+ resultSet.getObject("name")); } conn.close(); } public static Connection getConnect() { String driver = "org.opengauss.Driver"; String sourceURL = "jdbc:opengauss://127.0.0.1:8080/test?user=myuser&password=myPassWord"; Properties info = new Properties(); Connection conn = null; try { Class.forName(driver); } catch (Exception var9) { var9.printStackTrace(); return null; } try { conn = DriverManager.getConnection(sourceURL); System.out.println("连接成功！"); return conn; } catch (Exception var8) { var8.printStackTrace(); return null; ``` ```sql public static void main(String[] args) throws SQLException { Connection conn = getConnect(); Statement statement = conn.createStatement(); statement.execute("update test set name='wangwu' where id=1"); PreparedStatement preparedStatement=conn.prepareStatement("select * from test"); ResultSet resultSet=preparedStatement.executeQuery(); while (resultSet.next()){ System.out.println(resultSet.getObject("id")+" "+ resultSet.getObject("name")); } conn.close(); } public static Connection getConnect() { String driver = "org.opengauss.Driver"; String sourceURL = "jdbc:opengauss://127.0.0.1:8080/test?user=myuser&password=myPassWord"; Properties info = new Properties(); Connection conn = null; try { Class.forName(driver); } catch (Exception var9) { var9.printStackTrace(); return null; } try { conn = DriverManager.getConnection(sourceURL); System.out.println("连接成功！"); return conn; } catch (Exception var8) { var8.printStackTrace(); return null; ``` # Process 1. First confirm that this is a correct openGauss sql syntax, if not please leave a message under the issue and ignore it; 2. Compare SQL definitions in Official SQL Doc and ShardingSphere SQL Doc; 3. If there is any difference in ShardingSphere SQL Doc, please correct them by referring to the Official SQL Doc; 4. Run mvn install the current_file_module; 5. Check whether there are any exceptions. If indeed, please fix them. (Especially xxxVisitor.class); 6. Add new corresponding SQL case in SQL Cases and expected parsed result in Expected Statement XML; 7. Run SQLParserParameterizedTest to make sure no exceptions. # Relevant Skills 1. Master JAVA language 2. Have a basic understanding of Antlr `g4` file 3. Be familiar with openGauss SQLs -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. 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