FlyingZC opened a new issue, #29155: URL: https://github.com/apache/shardingsphere/issues/29155
# 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 #NonExistentTable values (10) ``` [link](https://learn.microsoft.com/zh-cn/troubleshoot/sql/database-engine/performance/understand-resolve-blocking) ```sql SELECT s.ticket, s.customer, r.store FROM dbo.Sales AS s CROSS JOIN dbo.Returns AS r WHERE s.ticket = r.ticket AND s.type = 'toy' AND r.date = '2016-05-11' ``` [link](https://learn.microsoft.com/zh-cn/sql/relational-databases/performance/cardinality-estimation-sql-server?view=sql-server-ver16) ```sql SELECT tat.transaction_begin_time, getdate() AS 'current time', es.program_name, es.login_time, es.session_id, tst.open_transaction_count, eib.event_info FROM sys.dm_tran_active_transactions tat JOIN sys.dm_tran_session_transactions tst ON tat.transaction_id=tst.transaction_id JOIN sys.dm_exec_sessions es ON tst.session_id=es.session_id CROSS APPLY sys.dm_exec_input_buffer(es.session_id, NULL) eib WHERE es.is_user_process = 1 ORDER BY tat.transaction_begin_time ASC ``` [link](https://learn.microsoft.com/zh-cn/troubleshoot/sql/database-engine/availability-groups/troubleshoot-availability-group-database-reverting-state) ```sql SELECT text, 'DBCC FREEPROCCACHE (0x' + CONVERT(VARCHAR (512), plan_handle, 2) + ')' AS dbcc_freeproc_command FROM sys.dm_exec_cached_plans CROSS APPLY sys.dm_exec_query_plan(plan_handle) CROSS APPLY sys.dm_exec_sql_text(plan_handle) WHERE text LIKE '%person.person%' ``` [link](https://learn.microsoft.com/zh-cn/troubleshoot/sql/database-engine/performance/troubleshoot-high-cpu-usage-issues) ```sql SELECT ProductID, Name, ProductNumber FROM [Production].[Product] WHERE SUBSTRING(ProductNumber, 0, 4) = 'HN-' ``` [link](https://learn.microsoft.com/zh-cn/troubleshoot/sql/database-engine/performance/troubleshoot-high-cpu-usage-issues) # 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 -- 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]
