FlyingZC opened a new issue, #27156: URL: https://github.com/apache/shardingsphere/issues/27156
# 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 NOAUDIT SELECT ON hr.employees; ``` ```sql NOAUDIT SELECT TABLE BY hr; ``` ```sql INSERT INTO xwarehouses VALUES( xmltype.createxml('<?xml version="1.0"?> <who:Warehouse xmlns:who="http://www.example.com/xwarehouses.xsd"; xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; xsi:schemaLocation="http://www.example.com/xwarehouses.xsd http://www.example.com/xwarehouses.xsd";> <WarehouseId>1</WarehouseId> <WarehouseName>Southlake, Texas</WarehouseName> <Building>Owned</Building> <Area>25000</Area> <Docks>2</Docks> <DockType>Rear load</DockType> <WaterAccess>true</WaterAccess> <RailAccess>false</RailAccess> <Parking>Street</Parking> <VClearance>10</VClearance> </who:Warehouse>')); ``` ```sql DELETE FROM employees WHERE job_id = 'SA_REP' AND hire_date + TO_YMINTERVAL('01-00') < SYSDATE RETURNING salary INTO :bnd1; ``` ```sql INSERT FIRST WHEN (sum_quantity_sold > 10 AND prod_weight_class < 5) AND sum_quantity_sold >=1) OR (sum_quantity_sold > 5 AND prod_weight_class > 5) THEN INTO large_freight_shipping VALUES (time_id, cust_id, prod_id, prod_weight_class, sum_quantity_sold) WHEN sum_amount_sold > 1000 AND sum_quantity_sold >=1 THEN INTO express_shipping VALUES (time_id, cust_id, prod_id, prod_weight_class, sum_amount_sold, sum_quantity_sold) WHEN (sum_quantity_sold >=1) THEN INTO default_shipping VALUES (time_id, cust_id, prod_id, sum_quantity_sold) ELSE INTO incorrect_sales_order VALUES (time_id, cust_id, prod_id) SELECT s.time_id, s.cust_id, s.prod_id, p.prod_weight_class, SUM(amount_sold) AS sum_amount_sold, SUM(quantity_sold) AS sum_quantity_sold FROM sales s, products p WHERE s.prod_id = p.prod_id AND s.time_id = TRUNC(SYSDATE) GROUP BY s.time_id, s.cust_id, s.prod_id, p.prod_weight_class; ``` # 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]
