pvary commented on issue #9517:
URL: https://github.com/apache/iceberg/issues/9517#issuecomment-1899911570

   If you are updating based on a table key, then `upsert` mode can help you:
   https://iceberg.apache.org/docs/latest/flink-writes/#upsert
   
   ```
   INSERT INTO tableName /*+ OPTIONS('upsert-enabled'='true') */
   ...
   ```
   
   Other than that, it is a totally new statement to support, and it would take 
a while to implement it. 


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