FlyingZC opened a new issue, #27050: URL: https://github.com/apache/shardingsphere/issues/27050
# 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 MATERIALIZED VIEW product_sales_mv BUILD IMMEDIATE REFRESH FORCE ENABLE QUERY REWRITE AS SELECT p.prod_name, SUM(s.amount_sold) AS dollar_sales FROM products p, sales s WHERE p.prod_id = s.prod_id GROUP BY prod_name HAVING SUM(s.amount_sold) BETWEEN 5000 AND 50000; ``` ```sql CREATE OPERATOR Contains BINDING (VARCHAR2, VARCHAR2) RETURN NUMBER USING text.contains, (spatial.geo, spatial.geo) RETURN NUMBER USING spatial.contains; ``` ```sql CREATE MATERIALIZED VIEW sales_pcat_cal_day_mv ENABLE QUERY REWRITE AS SELECT p.prod_category, t.day_in_year, SUM(s.amount_sold) AS sum_amount_sold FROM time_view t, sales s, products p WHERE t.time_id = s.time_id AND p.prod_id = s.prod_id GROUP BY p.prod_category, t.day_in_year; ``` ```sql CREATE MATERIALIZED VIEW sales_per_country_mv BUILD IMMEDIATE REFRESH FORCE ON DEMAND ENABLE QUERY REWRITE AS SELECT s.calendar_year AS calendar_year, s.country_name AS country_name, p.prod_name AS prod_name, SUM(s.amount_sold) AS sum_sales, COUNT(*) AS cnt FROM sales_par_list s, products p WHERE s.prod_id = p.prod_id AND s.calendar_year <= 2000 GROUP BY s.calendar_year, s.country_name, prod_name; ``` ```sql CREATE MATERIALIZED VIEW sales_shipping_lag_mv ENABLE QUERY REWRITE AS SELECT t1.fiscal_week_number, s.prod_id, t2.fiscal_week_number - t1.fiscal_week_number AS lag FROM times t1, sales s, times t2 WHERE t1.time_id = s.time_id AND t2.time_id = s.time_id_ship; ``` # 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]
