[GitHub] [shardingsphere] FlyingZC opened a new issue, #27732: Support parsing openGauss select sql

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

FlyingZC opened a new issue, #27732:
URL: https://github.com/apache/shardingsphere/issues/27732

   # 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 * from tbb;
    b 
   ---
    -1
     1
   (2 rows)
   
   
   ```
   
   ```sql
    select * from tba join tbb on a > b where b > 0 and a > 0 and sqrt(a) > 1;
    a | b 
   ---+---
    2 | 1 
   (1 row)
   
   
   ```
   
   ```sql
   ALTER TRIGGER trigger_name ON table_name RENAME TO new_trigger_name;
   ```
   
   ```sql
   DROP TRIGGER trigger_name ON table_name [ CASCADE | RESTRICT ];
   ```
   
   ```sql
    CREATE OR REPLACE FUNCTION tri_insert_func() RETURNS TRIGGER AS
              $$
              DECLARE
              BEGIN
                      INSERT INTO test_trigger_des_tbl VALUES(NEW.id1, NEW.id2, NEW.id3);
                      RETURN NEW;
              END
              $$ LANGUAGE PLPGSQL;
   
   
   ```
   
   # 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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Re: [I] Support parsing openGauss select sql [shardingsphere]

["github-actions[bot] (via GitHub)" <gi...@apache.org>]

github-actions[bot] commented on issue #27732:
URL: https://github.com/apache/shardingsphere/issues/27732#issuecomment-1783911885

   There hasn't been any activity on this issue recently, and in order to prioritize active issues, it will be marked as stale.


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Re: [I] Support parsing openGauss select sql [shardingsphere]

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

FlyingZC closed issue #27732: Support parsing openGauss  select sql
URL: https://github.com/apache/shardingsphere/issues/27732


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