FlyingZC opened a new issue, #27143: URL: https://github.com/apache/shardingsphere/issues/27143
# 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 EXPLAIN PLAN SET statement_id = 'ex_plan2' FOR SELECT last_name FROM employees WHERE last_name LIKE 'Pe%'; SELECT PLAN_TABLE_OUTPUT FROM TABLE(DBMS_XPLAN.DISPLAY(NULL, 'ex_plan2','BASIC')); ``` ```sql EXPLAIN PLAN FOR ``` ```sql EXPLAIN PLAN FOR SELECT * FROM sh.customers WHERE cust_city='Los Angeles' AND cust_state_province='CA'; ``` ```sql EXPLAIN PLAN FOR SELECT * FROM sales WHERE time_id BETWEEN :h AND '01-OCT-2000'; ``` ```sql EXPLAIN PLAN FOR SELECT po.reference, li.* FROM po_clob p, XMLTable('/PurchaseOrder' PASSING p.OBJECT_VALUE COLUMNS reference VARCHAR2(30) PATH 'Reference', lineitem XMLType PATH 'LineItems/LineItem') po, XMLTable('/LineItem' PASSING po.lineitem COLUMNS itemno BINARY_DOUBLE PATH '@ItemNumber', description VARCHAR2(256) PATH 'Description', partno VARCHAR2(14) PATH 'Part/@Id', quantity BINARY_DOUBLE PATH 'Part/@Quantity', unitprice BINARY_DOUBLE PATH 'Part/@UnitPrice') li WHERE po.reference = 'SBELL-20021009123335280PDT'; ``` # 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]
