FlyingZC opened a new issue, #27812: URL: https://github.com/apache/shardingsphere/issues/27812
# 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 select a.* from multi_partition_select_test partition (test_part1, test_part2) a; ``` ```sql -- 首先创建兼容模式为B的数据库 CREATE DATABASE mydb WITH DBCOMPATIBILITY 'B'; \c mydb -- 创建两个表并插入测试数据 CREATE TABLE tbl_date(col DATE); INSERT INTO tbl_date VALUES('2000-02-16'); CREATE TABLE tbl_json(col JSON); INSERT INTO tbl_json VALUES('{"id":1,"dbname":"openGauss","language":"C++"}'); -- UNION 查询，将会使用TEXT类型进行转换 SELECT * FROM tbl_date UNION SELECT * FROM tbl_json; ``` ```sql CURSOR cursor_name [ BINARY ] [ NO SCROLL ] [ { WITH | WITHOUT } HOLD ] FOR query ; ``` ```sql INSERT INTO customer_t1 (c_customer_sk, c_first_name) VALUES (3769, 'Grace'); INSERT 0 1 等同于 ``` ```sql INSERT INTO customer_t1 (c_customer_sk, c_customer_id, c_first_name) VALUES (3769, 'hello', DEFAULT); INSERT 0 1 ``` # 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]
