FlyingZC opened a new issue, #27079: URL: https://github.com/apache/shardingsphere/issues/27079
# 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 OUTLINE salaries FOR CATEGORY special ON SELECT last_name, salary FROM employees; ``` ```sql CREATE OR REPLACE VIEW purchaseorder_summary OF XMLType AS SELECT updateXML(OBJECT_VALUE, '/PurchaseOrder/Actions', NULL, '/PurchaseOrder/ShippingInstructions', NULL, '/PurchaseOrder/LineItems', NULL) AS XML FROM purchaseorder p; SELECT OBJECT_VALUE FROM purchaseorder_summary WHERE XMLExists('$p/PurchaseOrder[Reference="DAUSTIN-20021009123335811PDT"]' PASSING OBJECT_VALUE AS "p"); ``` ```sql CREATE OR REPLACE VIEW v AS SELECT e1.first_name, e1.last_name, j.job_id, sum(e2.salary) total_sal FROM employees e1, ( SELECT * FROM employees e3) e2, job_history j WHERE e1.employee_id = e2.manager_id AND e1.employee_id = j.employee_id AND e1.hire_date = j.start_date AND e1.salary = ( SELECT max(e2.salary) FROM employees e2 WHERE e2.department_id = e1.department_id ) GROUP BY e1.first_name, e1.last_name, j.job_id ORDER BY total_sal; ``` ```sql CREATE OR REPLACE VIEW travel_view AS SELECT story_name, charfunc(story) short_story, sys_DburiGen(story_name, story, 'text()') story_link FROM travel_story; View created. SELECT * FROM travel_view; ``` ```sql CREATE PROFILE app_user LIMIT SESSIONS_PER_USER UNLIMITED CPU_PER_SESSION UNLIMITED CPU_PER_CALL 3000 CONNECT_TIME 45 LOGICAL_READS_PER_SESSION DEFAULT LOGICAL_READS_PER_CALL 1000 PRIVATE_SGA 15K COMPOSITE_LIMIT 5000000; ``` # 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]
