tustvold commented on code in PR #8253:
URL: https://github.com/apache/arrow-datafusion/pull/8253#discussion_r1397741109


##########
datafusion/common/src/utils.rs:
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@@ -390,6 +390,16 @@ pub fn arrays_into_list_array(
     ))
 }
 
+/// Get the child arrays from a `ArrayRef`.
+pub fn array_into_children_array_vec(list_arr: &ArrayRef) -> Vec<ArrayRef> {

Review Comment:
   I think this handles nulls and sliced arrays incorrectly. Perhaps you could 
just use the comparison kernels on the lists directly, instead of partially 
decomposing them?



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