FlyingZC opened a new issue, #27159: URL: https://github.com/apache/shardingsphere/issues/27159
# 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 SET SERVEROUTPUT ON DECLARE agent sys.aq$_agent; test_agent_list DBMS_AQ.aq$_agent_list_t; BEGIN test_agent_list(1) := sys.aq$_agent(NULL, 'test.obj_queue', NULL); test_agent_list(2) := sys.aq$_agent(NULL, 'test.priority_queue', NULL); DBMS_AQ.LISTEN( agent_list => test_agent_list, wait => 0, agent => agent); DBMS_OUTPUT.PUT_LINE('Message in Queue: ' || agent.address); END; ``` ```sql SET SERVEROUTPUT ON DECLARE dequeue_options DBMS_AQ.dequeue_options_t; message_properties DBMS_AQ.message_properties_t; message_handle RAW(16); message test.message_typ; no_messages exception; end_of_group exception; PRAGMA EXCEPTION_INIT (no_messages, -25228); PRAGMA EXCEPTION_INIT (end_of_group, -25235); BEGIN dequeue_options.wait := DBMS_AQ.NO_WAIT; dequeue_options.navigation := DBMS_AQ.FIRST_MESSAGE; LOOP BEGIN DBMS_AQ.DEQUEUE( queue_name => 'test.group_queue', dequeue_options => dequeue_options, message_properties => message_properties, payload => message, msgid => message_handle); DBMS_OUTPUT.PUT_LINE(message.subject || ': ' || message.text ); dequeue_options.navigation := DBMS_AQ.NEXT_MESSAGE; EXCEPTION WHEN end_of_group THEN DBMS_OUTPUT.PUT_LINE ('Finished ' || message.subject); COMMIT; dequeue_options.navigation := DBMS_AQ.NEXT_TRANSACTION; END; END LOOP; EXCEPTION WHEN no_messages THEN DBMS_OUTPUT.PUT_LINE ('No more messages'); END; ``` ```sql SET SERVEROUTPUT ON DECLARE dequeue_options DBMS_AQ.dequeue_options_t; message_properties DBMS_AQ.message_properties_t; message_handle RAW(16); message test.message_typ; BEGIN dequeue_options.dequeue_mode := DBMS_AQ.BROWSE; LOOP DBMS_AQ.DEQUEUE( queue_name => 'test.obj_queue', dequeue_options => dequeue_options, message_properties => message_properties, payload => message, msgid => message_handle); DBMS_OUTPUT.PUT_LINE ('Browsed Message Text: ' || message.text); EXIT WHEN message.subject = 'PINK'; END LOOP; dequeue_options.dequeue_mode := DBMS_AQ.REMOVE; dequeue_options.msgid := message_handle; DBMS_AQ.DEQUEUE( queue_name => 'test.obj_queue', dequeue_options => dequeue_options, message_properties => message_properties, payload => message, msgid => message_handle); DBMS_OUTPUT.PUT_LINE('Removed Message Text: ' || message.text); COMMIT; END; ``` ```sql SET SERVEROUTPUT ON DECLARE dequeue_options DBMS_AQ.dequeue_options_t; message_properties DBMS_AQ.message_properties_t; message_handle RAW(16); message test.message_typ; BEGIN dequeue_options.dequeue_mode := DBMS_AQ.LOCKED; LOOP DBMS_AQ.dequeue( queue_name => 'test.obj_queue', dequeue_options => dequeue_options, message_properties => message_properties, payload => message, msgid => message_handle); DBMS_OUTPUT.PUT_LINE('Locked Message Text: ' || message.text); EXIT WHEN message.subject = 'PURPLE'; END LOOP; dequeue_options.dequeue_mode := DBMS_AQ.REMOVE; dequeue_options.msgid := message_handle; DBMS_AQ.DEQUEUE( queue_name => 'test.obj_queue', dequeue_options => dequeue_options, message_properties => message_properties, payload => message, msgid => message_handle); DBMS_OUTPUT.PUT_LINE('Removed Message Text: ' || message.text); COMMIT; END; ``` ```sql SET (nested_table) ``` # 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]
