kuangyoubo opened a new issue #5452: URL: https://github.com/apache/shardingsphere/issues/5452
## Bug Report **For English only**, other languages will not accept. Before report a bug, make sure you have: - Searched open and closed [GitHub issues](https://github.com/apache/shardingsphere/issues). - Read documentation: [ShardingSphere Doc](https://shardingsphere.apache.org/document/current/en/overview). Please pay attention on issues you submitted, because we maybe need more details. If no response **more than 7 days** and we cannot reproduce it on current information, we will **close it**. Please answer these questions before submitting your issue. Thanks! ### Which version of ShardingSphere did you use? 4.1.0 ### Which project did you use? Sharding-JDBC or Sharding-Proxy? Sharding-JDBC ### Expected behavior No output log ### Actual behavior line 1:45 no viable alternative at input 'CONVERT(substring(customer_code,3),signed' line 1:45 no viable alternative at input 'CONVERT(substring(customer_code,3),signed' ### Reason analyze (If you can) Unsupported function ### Steps to reproduce the behavior, such as: SQL to execute, sharding rule configuration, when exception occur etc. select CONVERT(substring(customer_code, 3) , signed) as maxCustNo from tb_sp_user_customer order by id desc limit 1 ### Example codes for reproduce this issue (such as a github link). select CONVERT(substring(customer_code, 3) , signed) as maxCustNo from tb_sp_user_customer order by id desc limit 1 ---------------------------------------------------------------- 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. For queries about this service, please contact Infrastructure at: us...@infra.apache.org
