Support parsing Oracle CREATE TABLE sql

[FlyingZC]

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:

CREATE TABLE new_departments 
   (department_id, department_name, location_id)
   AS SELECT department_id, department_name, location_id 
   FROM departments;

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')));

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;

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)));

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

[github-actions[bot]]

There hasn't been any activity on this issue recently, and in order to prioritize active issues, it will be marked as stale.

[github-actions[bot]]

There hasn't been any activity on this issue recently, and in order to prioritize active issues, it will be marked as stale.