qidian99 opened a new issue, #1152: URL: https://github.com/apache/incubator-paimon/issues/1152
### Search before asking - [X] I searched in the [issues](https://github.com/apache/incubator-paimon/issues) and found nothing similar. ### Motivation 1. I ran Flink 1.17 cluster and tested out Paimon catalog DDL scenarios, and add/drop column statements suceeded without exceptions ```sql ALTER TABLE my_table ADD ( ts AS TO_TIMESTAMP(log_ts) AFTER log_ts ); ```  2. I noticed that SchemaChangeITCase missed the altering columns case, so I tried to add corresponding test cases to SchemaChangeITCase, and got an exception:  3. I noticed that in Flink 1.15 and 1.16,SqlToOperationConverter��::convertAlterTable�� does not support add/drop columns Altering table add/drop columns is a new feature introduced in Flink 1.17. Therefore, it's better to add tests in paimon-flink-1.17 ### Solution Add the corresponding tests that cover add column, drop column and modify column. ### Anything else? _No response_ ### Are you willing to submit a PR? - [X] I'm willing to submit a PR! -- 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: issues-unsubscr...@paimon.apache.org.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org