LiaCastaneda commented on code in PR #27099:
URL: https://github.com/apache/datafusion/pull/27099#discussion_r4492072918


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datafusion/substrait/tests/testdata/test_plans/transform_coalesce_struct_list_empty_literal.substrait.json:
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Review Comment:
   this plan is essentially `array_transform(coalesce(zones, []), z -> 
get_field(z, 'zone_name'))` were `zones` is a list of structs. Before this 
query would fail because `zones` and `[]` would be considered different. 
   



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