FlyingZC opened a new issue, #27086: URL: https://github.com/apache/shardingsphere/issues/27086
# 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 TABLE departments_t (d_no NUMBER, mgr_ref REF employees_typ SCOPE IS employees_obj_t); CREATE TABLE departments_t ( d_no NUMBER, mgr_ref REF employees_typ CONSTRAINT mgr_in_emp REFERENCES employees_obj_t); ``` ```sql CREATE TABLE customers_part ( customer_id NUMBER(6), cust_first_name VARCHAR2(20), cust_last_name VARCHAR2(20), nls_territory VARCHAR2(30), credit_limit NUMBER(9,2)) PARTITION BY RANGE (credit_limit) SUBPARTITION BY LIST (nls_territory) SUBPARTITION TEMPLATE (SUBPARTITION east VALUES ('CHINA', 'JAPAN', 'INDIA', 'THAILAND'), SUBPARTITION west VALUES ('AMERICA', 'GERMANY', 'ITALY', 'SWITZERLAND'), SUBPARTITION other VALUES (DEFAULT)) (PARTITION p1 VALUES LESS THAN (1000), PARTITION p2 VALUES LESS THAN (2500), PARTITION p3 VALUES LESS THAN (MAXVALUE)); ``` ```sql CREATE TABLE dept_10 CLUSTER personnel (department_id) AS SELECT * FROM employees WHERE department_id = 10; CREATE TABLE dept_20 CLUSTER personnel (department_id) AS SELECT * FROM employees WHERE department_id = 20; ``` ```sql CREATE TABLE deptXTec3 ORGANIZATION EXTERNAL (TYPE ORACLE_DATAPUMP DEFAULT DIRECTORY def_dir1 ACCESS PARAMETERS (ENCRYPTION ENABLED) LOCATION ('dept.dmp')); ``` ```sql CREATE TABLE customers_demo AS SELECT * FROM customers; ``` # 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]
