andygrove commented on code in PR #1332:
URL: https://github.com/apache/datafusion-comet/pull/1332#discussion_r1932584045


##########
native/spark-expr/src/conversion_funcs/cast.rs:
##########
@@ -988,6 +988,9 @@ fn is_datafusion_spark_compatible(
         return true;
     }
     match from_type {
+        DataType::Null => {
+            matches!(to_type, DataType::List(_))
+        }

Review Comment:
   This was needed to fix test failures in `CometArrayExpressionSuite`. 



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