FlyingZC opened a new issue, #27127: URL: https://github.com/apache/shardingsphere/issues/27127
# 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 VIEW own_salary AS SELECT last_name, salary FROM employees WHERE last_name = USER; ``` ```sql CREATE VIEW sales_staff AS SELECT empno, ename, deptno FROM emp WHERE deptno = 10 WITH CHECK OPTION CONSTRAINT sales_staff_cnst; ``` ```sql CREATE VIEW sales_staff AS SELECT empno, ename FROM emp WHERE deptno = 10 WITH CHECK OPTION CONSTRAINT sales_staff_cnst; ``` ```sql CREATE VIEW sales_view AS SELECT prod_name product, country_name country, channel_id channel, SUBSTR(calendar_quarter_desc, 6,2) quarter, SUM(amount_sold) amount_sold, SUM(quantity_sold) quantity_sold FROM sales, times, customers, countries, products WHERE sales.time_id = times.time_id AND sales.prod_id = products.prod_id AND sales.cust_id = customers.cust_id AND customers.country_id = countries.country_id GROUP BY prod_name, country_name, channel_id, SUBSTR(calendar_quarter_desc, 6, 2); ``` ```sql CREATE VIEW sales_view2 AS SELECT country_name country, prod_name product, calendar_year year, calendar_month_name month, SUM(amount_sold) sale, COUNT(amount_sold) cnt FROM sales, times, customers, countries, products WHERE sales.time_id = times.time_id AND sales.prod_id = products.prod_id AND sales.cust_id = customers.cust_id AND customers.country_id = countries.country_id GROUP BY country_name, prod_name, calendar_year, calendar_month_name; ``` # 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]
