FlyingZC opened a new issue, #27645: URL: https://github.com/apache/shardingsphere/issues/27645
# Background Hi community, 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 openGauss SQL parsing in ShardingSphere. More details: https://shardingsphere.apache.org/document/current/en/reference/sharding/parse/ # Task This issue is to support more openGauss sql parse, as follows: ```sql CREATE OR REPLACE PROCEDURE proc_loop(i in integer, count out integer) AS BEGIN count:=0; LOOP IF count > i THEN raise info 'count is %. ', count; EXIT; ELSE count:=count+1; END IF; END LOOP; END; / CALL proc_loop(10,5); ``` ```sql CREATE TABLE integertable(c1 integer) ; CREATE OR REPLACE PROCEDURE proc_while_loop(maxval in integer) AS DECLARE i int :=1; BEGIN WHILE i < maxval LOOP INSERT INTO integertable VALUES(i); i:=i+1; END LOOP; END; / --调用函数 CALL proc_while_loop(10); --删除存储过程和表 DROP PROCEDURE proc_while_loop; DROP TABLE integertable; ``` ```sql CREATE TABLE hdfs_t1 ( title NUMBER(6), did VARCHAR2(20), data_period VARCHAR2(25), kind VARCHAR2(25), interval VARCHAR2(20), time DATE, isModified VARCHAR2(10) ); INSERT INTO hdfs_t1 VALUES( 8, 'Donald', 'OConnell', 'DOCONNEL', '650.507.9833', to_date('21-06-1999', 'dd-mm-yyyy'), 'SH_CLERK' ); CREATE OR REPLACE PROCEDURE proc_forall() AS BEGIN FORALL i IN 100..120 update hdfs_t1 set title = title + 100*i; END; / --调用函数 CALL proc_forall(); --查询存储过程调用结果 SELECT * FROM hdfs_t1 WHERE title BETWEEN 100 AND 120; --删除存储过程和表 DROP PROCEDURE proc_forall; DROP TABLE hdfs_t1; ``` ```sql CREATE OR REPLACE PROCEDURE label_loop(i in integer, count out integer) AS BEGIN count:=0; label: LOOP IF count > i THEN raise info 'count is %. ', count; LEAVE; ELSE count:=count+1; END IF; END LOOP label; END; / CALL proc_loop(10,5); ``` ```sql create or replace procedure while_test() as declare _i integer = 0; BEGIN the_while: while _i < 10 do _i := _i + 1; continue the_while when _i % 2 = 0; raise notice '%', _i; end while the_while; end; / select while_test(); ``` # Process 1. First confirm that this is a correct openGauss sql syntax, if not please leave a message under the issue and ignore it; 2. Compare SQL definitions in Official 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 Statement 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 openGauss 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]
