FlyingZC opened a new issue, #29154: URL: https://github.com/apache/shardingsphere/issues/29154
# 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 SELECT candidate_name,SSN FROM candidates WHERE CONTAINS(candidate_resume, '"SQL Server"') AND candidate_division = 'DBA' ``` [link](https://learn.microsoft.com/zh-cn/sql/relational-databases/search/full-text-search?view=sql-server-ver16) ```sql SELECT [s_tst].[session_id], [database_name] = DB_NAME (s_tdt.database_id), [s_tdt].[database_transaction_begin_time], [sql_text] = [s_est].[text] FROM sys.dm_tran_database_transactions [s_tdt] INNER JOIN sys.dm_tran_session_transactions [s_tst] ON [s_tst].[transaction_id] = [s_tdt].[transaction_id] INNER JOIN sys.dm_exec_connections [s_ec] ON [s_ec].[session_id] = [s_tst].[session_id] CROSS APPLY sys.dm_exec_sql_text ([s_ec].[most_recent_sql_handle]) AS [s_est] ``` [link](https://learn.microsoft.com/zh-cn/troubleshoot/sql/database-engine/performance/understand-resolve-blocking) ```sql SELECT tst.session_id, [database_name] = db_name(s.database_id) , tat.transaction_begin_time , transaction_duration_s = datediff(s, tat.transaction_begin_time, sysdatetime()) , transaction_type = CASE tat.transaction_type WHEN 1 THEN 'Read/write transaction' WHEN 2 THEN 'Read-only transaction' WHEN 3 THEN 'System transaction' WHEN 4 THEN 'Distributed transaction' END , input_buffer = ib.event_info, tat.transaction_uow , transaction_state = CASE tat.transaction_state WHEN 0 THEN 'The transaction has not been completely initialized yet.' WHEN 1 THEN 'The transaction has been initialized but has not started.' WHEN 2 THEN 'The transaction is active - has not been committed or rolled back.' WHEN 3 THEN 'The transaction has ended. This is used for read-only transactions.' WHEN 4 THEN 'The commit process has been initiated on the distributed transaction.' WHEN 5 THEN 'The transaction is in a prepared state and waiting resolution.' WHEN 6 THEN 'The transaction has been committed.' WHEN 7 THEN 'The transaction is being rolled back.' WHEN 8 THEN 'The transaction has been rolled back.' END , transaction_name = tat.name, request_status = r.status , tst.is_user_transaction, tst.is_local , session_open_transaction_count = tst.open_transaction_count , s.host_name, s.program_name, s.client_interface_name, s.login_name, s.is_user_process FROM sys.dm_tran_active_transactions tat INNER JOIN sys.dm_tran_session_transactions tst on tat.transaction_id = tst.transaction_id INNER JOIN Sys.dm_exec_sessions s on s.session_id = tst.session_id LEFT OUTER JOIN sys.dm_exec_requests r on r.session_id = s.session_id CROSS APPLY sys.dm_exec_input_buffer(s.session_id, null) AS ib ``` [link](https://learn.microsoft.com/zh-cn/troubleshoot/sql/database-engine/performance/understand-resolve-blocking) ```sql INSERT INTO #test SELECT 1 ``` [link](https://learn.microsoft.com/zh-cn/troubleshoot/sql/database-engine/performance/understand-resolve-blocking) ```sql INSERT INTO #test2 SELECT 1 ``` [link](https://learn.microsoft.com/zh-cn/troubleshoot/sql/database-engine/performance/understand-resolve-blocking) # 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]
