FlyingZC opened a new issue, #27729:
URL: https://github.com/apache/shardingsphere/issues/27729

   # 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
   int out = cstmt.getInt(4);
   ```
   
   ```sql
   //在数据库中已创建了如下存储过程,它带有out参数。
   create or replace procedure testproc 
   (
       psv_in1 in integer,
       psv_in2 in integer,
       psv_inout in out integer
   )
   as
   begin
       psv_inout := psv_in1 + psv_in2 + psv_inout;
   end;
   ```
   
   ```sql
   cstmt.close();
   ```
   
   ```sql
   Connection conn = DriverManager.getConnection("url","user","password");
   CallableStatement cs = conn.prepareCall("{ CALL TEST_PROC(?,?,?) }");
   ```
   
   ```sql
   PGobject pGobject = new PGobject();
   pGobject.setType("public.compfoo"); // 设置复合类型名,格式为“schema.typename”。
   pGobject.setValue("(1,demo)"); // 绑定复合类型值,格式为“(value1,value2)”。
   cs.setObject(1, pGobject);
   ```
   
   # 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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