FlyingZC opened a new issue, #27034:
URL: https://github.com/apache/shardingsphere/issues/27034

   # 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
   CREATE MATERIALIZED VIEW LOG ON sales WITH ROWID
    (prod_id, cust_id, time_id, channel_id, promo_id, quantity_sold, 
amount_sold),
   COMMIT SCN INCLUDING NEW VALUES;
   ```
   
   ```sql
   CREATE MATERIALIZED VIEW LOG ON sales WITH ROWID
    (prod_id, cust_id, time_id, channel_id, promo_id, quantity_sold, 
amount_sold),
   COMMIT SCN INCLUDING NEW VALUES;
   ```
   
   ```sql
   CREATE MATERIALIZED VIEW LOG ON sales WITH ROWID
   (prod_id, cust_id, time_id, channel_id, promo_id, quantity_sold, amount_sold)
   INCLUDING NEW VALUES;
   ```
   
   ```sql
   CREATE MATERIALIZED VIEW LOG ON orders
     PCTFREE 5
     TABLESPACE example
     STORAGE (INITIAL 10K)
     PURGE REPEAT INTERVAL '5' DAY;
   ```
   
   ```sql
   CREATE MATERIALIZED VIEW cust_birth_mv1
   ENABLE QUERY REWRITE
   AS SELECT cust_last_name, cust_first_name, cust_year_of_birth
   FROM customers WHERE cust_year_of_birth BETWEEN 1940 AND 1950;
   
   CREATE MATERIALIZED VIEW cust_avg_credit_mv2
   ENABLE QUERY REWRITE
   AS SELECT cust_last_name, cust_first_name, cust_year_of_birth
   FROM customers 
   WHERE cust_year_of_birth > 1950 AND cust_year_of_birth <= 1970;
   ```
   
   # 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


-- 
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.

To unsubscribe, e-mail: 
[email protected]

For queries about this service, please contact Infrastructure at:
[email protected]

Reply via email to