FlyingZC opened a new issue, #29157:
URL: https://github.com/apache/shardingsphere/issues/29157

   # Background
   Hi community.
   This issue is for #29149.
   
   The ShardingSphere SQL parser engine helps users to parse SQL to create the 
AST (Abstract Syntax Tree) and visit the AST to get SQLStatement (Java Object). 
Currently, we are planning to enhance the support for `SQL Server` SQL parsing 
in ShardingSphere.
   
   More details:
   
https://shardingsphere.apache.org/document/current/en/reference/sharding/parse/
   
   # Task
   This issue is to support more `SQL Server` sql parsing, as follows:
   ```sql
   INSERT INTO dbo.MTCars
   EXEC sp_execute_external_script @language = N'R'
       , @script = N'MTCars <- mtcars
   ```
   
[link](https://learn.microsoft.com/zh-cn/sql/machine-learning/tutorials/quickstart-r-train-score-model?view=sql-server-ver16)
   
   ```sql
   INSERT INTO GLM_models(model)
   EXEC generate_GLM
   ```
   
[link](https://learn.microsoft.com/zh-cn/sql/machine-learning/tutorials/quickstart-r-train-score-model?view=sql-server-ver16)
   
   ```sql
   SELECT name
       , size / 128.0 - CAST(FILEPROPERTY(name, 'SpaceUsed') AS INT) / 128.0 AS 
AvailableSpaceInMB
   FROM sys.database_files
   ```
   
[link](https://learn.microsoft.com/zh-cn/sql/t-sql/database-console-commands/dbcc-shrinkfile-transact-sql?view=azuresqldb-mi-current&preserve-view=true)
   
   ```sql
   INSERT INTO cci_target WITH (TABLOCK)
   SELECT TOP 300000 * FROM staging
   ```
   
[link](https://learn.microsoft.com/zh-cn/sql/t-sql/statements/alter-index-transact-sql?view=azuresqldb-mi-current&preserve-view=true)
   
   ```sql
   SELECT
           c.name,
           Count(*)  AS [Count-Per-Column-Repeated-Name]
       FROM
                sys.syscolumns  AS c
           JOIN sys.sysobjects  AS o
               ON o.id = c.id
       WHERE
           o.type = 'V'
           AND
           c.name like '%event%'
       GROUP BY
           c.name
       HAVING
           Count(*) >= 3   --2     -- Try both values during session.
       ORDER BY
           c.name
   ```
   
[link](https://learn.microsoft.com/zh-cn/sql/relational-databases/extended-events/quick-start-extended-events-in-sql-server?view=sql-server-ver16)
   
   # Process
   1. First confirm that this is a correct `SQL Server` 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 `SQL Server` SQLs


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