andygrove commented on PR #1179:
URL: 
https://github.com/apache/datafusion-comet/pull/1179#issuecomment-2568189397

   There seems to be a difference in null handling between DataFusion and Spark 
that is causing the tests to fail.
   
   This test passes:
   
   ```scala
   checkSparkAnswerAndOperator(sql("SELECT array_remove(array(_2, _3,_4), _2) 
from t1 where _2 is not null"))
   ```
   
   This test fails for me locally and also in CI:
   
   ```scala
   checkSparkAnswerAndOperator(sql("SELECT array_remove(array(_2, _3,_4), _2) 
from t1"))
   ```
   
   


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