comphead commented on issue #2256:
URL: 
https://github.com/apache/datafusion-comet/issues/2256#issuecomment-3235337339

   This happens because of 
   ```
           if (struct.names.length != struct.names.distinct.length) {
             withInfo(expr, "CreateNamedStruct with duplicate field names are 
not supported")
             return None
           }
   ```
   
   Having commented this out I'm getting
   
   ```
   Caused by: java.lang.IllegalStateException: ArrowArray struct has 2 children 
(expected 1)
   ```


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