FlyingZC opened a new issue, #27861:
URL: https://github.com/apache/shardingsphere/issues/27861

   # 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 TABLESPACE example2 RELATIVE LOCATION 'tablespace2/tablespace_2';
   
   ```
   
   ```sql
    CREATE TABLESPACE example3 RELATIVE LOCATION 'tablespace3/tablespace_3';
   
   ```
   
   ```sql
    CREATE TABLESPACE example4 RELATIVE LOCATION 'tablespace4/tablespace_4';
   --创建表tpcds.customer_address_p1。
   
   ```
   
   ```sql
    CREATE TABLE tpcds.customer_address_p1
   (
       CA_ADDRESS_SK             INTEGER               NOT NULL,
       CA_ADDRESS_ID             CHAR(16)              NOT NULL,
       CA_STREET_NUMBER          CHAR(10)                      ,
       CA_STREET_NAME            VARCHAR(60)                   ,
       CA_STREET_TYPE            CHAR(15)                      ,
       CA_SUITE_NUMBER           CHAR(10)                      ,
       CA_CITY                   VARCHAR(60)                   ,
       CA_COUNTY                 VARCHAR(30)                   ,
       CA_STATE                  CHAR(2)                       ,
       CA_ZIP                    CHAR(10)                      ,
       CA_COUNTRY                VARCHAR(20)                   ,
       CA_GMT_OFFSET             DECIMAL(5,2)                  ,
       CA_LOCATION_TYPE          CHAR(20)
   )
   TABLESPACE example1
   PARTITION BY RANGE(CA_ADDRESS_SK)
   ( 
      PARTITION p1 VALUES LESS THAN (3000),
      PARTITION p2 VALUES LESS THAN (5000) TABLESPACE example1,
      PARTITION p3 VALUES LESS THAN (MAXVALUE) TABLESPACE example2
   )
   ENABLE ROW MOVEMENT;
   --创建分区表索引ds_customer_address_p1_index1,不指定索引分区的名称。
   
   ```
   
   ```sql
    CREATE INDEX ds_customer_address_p1_index1 ON 
tpcds.customer_address_p1(CA_ADDRESS_SK) LOCAL; 
   --创建分区表索引ds_customer_address_p1_index2,并指定索引分区的名称。
   
   ```
   
   # 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


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