[GitHub] [shardingsphere] FlyingZC opened a new issue, #27846: Support parsing openGauss create snapshot sql

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

FlyingZC opened a new issue, #27846:
URL: https://github.com/apache/shardingsphere/issues/27846

   # 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
   create snapshot s1@2.0 as select * from t1;
   ```
   
   ```sql
   create snapshot s1@3.0 from @1.0 comment is 'inherits from @1.0' using (INSERT VALUES(6, 'john'), (7, 'tim'); DELETE WHERE id = 1);
   ```
   
   ```sql
   SELECT * FROM s1@3.0;
   ```
   
   ```sql
   purge snapshot s1@3.0;
   ```
   
   ```sql
   sample snapshot s1@2.0 stratify by name as nick at ratio .5;
   ```
   
   # 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 create snapshot sql [shardingsphere]

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

FlyingZC closed issue #27846: Support parsing openGauss create snapshot sql
URL: https://github.com/apache/shardingsphere/issues/27846


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[GitHub] [shardingsphere] github-actions[bot] commented on issue #27846: Support parsing openGauss create snapshot sql

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

github-actions[bot] commented on issue #27846:
URL: https://github.com/apache/shardingsphere/issues/27846#issuecomment-1703265604

   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 create snapshot sql [shardingsphere]

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

github-actions[bot] commented on issue #27846:
URL: https://github.com/apache/shardingsphere/issues/27846#issuecomment-1783911188

   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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