FlyingZC opened a new issue, #27007:
URL: https://github.com/apache/shardingsphere/issues/27007

   # Background
   Hi community,
   This issue is for #26878.
   
   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 Oracle SQL parsing in 
ShardingSphere.
   
   More details:
   
https://shardingsphere.apache.org/document/current/en/reference/sharding/parse/
   
   # Task
   This issue is to support more oracle sql parse, as follows:
   ```sql
   ANALYZE TABLE emp VALIDATE STRUCTURE CASCADE ONLINE;
   ```
   
   ```sql
   ANALYZE TABLE emp VALIDATE STRUCTURE CASCADE;
   ```
   
   ```sql
   ANALYZE TABLE employees VALIDATE STRUCTURE CASCADE;
   ```
   
   ```sql
   AUDIT ALL STATEMENTS IN SESSION CURRENT BY ACCESS WHENEVER NOT SUCCESSFUL;
   ```
   
   ```sql
   ALTER VIEW time_view ADD (CONSTRAINT time_view_pk 
      PRIMARY KEY (time_id) DISABLE NOVALIDATE);
   ALTER VIEW time_view MODIFY CONSTRAINT time_view_pk RELY;
   ALTER TABLE sales ADD (CONSTRAINT time_view_fk FOREIGN KEY (time_id)
      REFERENCES time_view(time_id) DISABLE NOVALIDATE);
   ALTER TABLE sales MODIFY CONSTRAINT time_view_fk RELY;
   ```
   
   # Process
   1. First confirm that this is a correct oracle sql syntax, if not please 
ignore;
   2. Compare SQL definitions in Oficial 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 Statment 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 Oracle SQLs


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