[GitHub] [shardingsphere] FlyingZC opened a new issue, #27674: Support parsing openGauss select cfg_name sql

["FlyingZC (via GitHub)" <gi...@apache.org>]

FlyingZC opened a new issue, #27674:
URL: https://github.com/apache/shardingsphere/issues/27674

   # 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
   select cfg_name from bmsql_config group by cfg_name having cfg_name='1';
   delete from bmsql_config;
   delete from bmsql_config where cfg_name='1';
   ```
   
   ```sql
    CREATE USER jack IDENTIFIED BY 'xxxxxxxxxx';
   CREATE ROLE
   
   ```
   
   ```sql
    \c - sysadmin
   
   --创建同义词t1。
   
   ```
   
   ```sql
    CREATE OR REPLACE SYNONYM t1 FOR ot.t1;
   
   --创建新用户u1。
   gaussdb
   ```
   
   ```sql
   START TRANSACTION;
   INSERT INTO test VALUES(1,'test1','test123');
   COMMIT;
   ```
   
   # 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


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[GitHub] [shardingsphere] strongduanmu closed issue #27674: Support parsing openGauss select cfg_name sql

["strongduanmu (via GitHub)" <gi...@apache.org>]

strongduanmu closed issue #27674: Support parsing openGauss select cfg_name sql
URL: https://github.com/apache/shardingsphere/issues/27674


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