FlyingZC opened a new issue, #27101: URL: https://github.com/apache/shardingsphere/issues/27101
# 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 new_departments (department_id, department_name, location_id) AS SELECT department_id, department_name, location_id FROM departments; ``` ```sql CREATE TABLE orders ( id NUMBER , cust_id NUMBER , order_date DATE , order_total NUMBER ) PARTITION BY RANGE (order_date) INTERVAL (NUMTOYMINTERVAL(1,'MONTH')) SUBPARTITION BY RANGE (order_total) SUBPARTITION TEMPLATE ( SUBPARTITION p_small VALUES LESS THAN (1000) , SUBPARTITION p_medium VALUES LESS THAN (10000) , SUBPARTITION p_large VALUES LESS THAN (100000) , SUBPARTITION p_extraordinary VALUES LESS THAN (MAXVALUE) ) (PARTITION p_before_2007 VALUES LESS THAN (TO_DATE('01-JAN-2007','dd- MON-yyyy'))); ``` ```sql CREATE TABLE pivot_table AS SELECT * FROM (SELECT EXTRACT(YEAR FROM order_date) year, order_mode, order_total FROM orders) PIVOT (SUM(order_total) FOR order_mode IN ('direct' AS Store, 'online' AS Internet)); SELECT * FROM pivot_table ORDER BY year; ``` ```sql CREATE TABLE oe.people_reltab ( id NUMBER(4) CONSTRAINT pk_people_reltab PRIMARY KEY, first_name VARCHAR2(20), last_name VARCHAR2(20), phones_ntab oe.phone_ntabtyp) NESTED TABLE phones_ntab STORE AS phone_store_ntab ((PRIMARY KEY (NESTED_TABLE_ID, location))); ``` ```sql CREATE TABLE po_binaryxml OF XMLType XMLTYPE STORE AS BINARY XML VIRTUAL COLUMNS (c_reference AS (XMLCast(XMLQuery('/PurchaseOrder/Reference' PASSING OBJECT_VALUE RETURNING CONTENT) AS VARCHAR2(32)))); ``` # 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]
