peter-toth commented on issue #27119: [SPARK-30447][SQL] Constant propagation nullability issue URL: https://github.com/apache/spark/pull/27119#issuecomment-572920893 @cloud-fan @maropu @dongjoon-hyun , do you think it makes sense to continue working on `ConstantPropagation`? You know, I extracted this PR from a bigger one: https://github.com/apache/spark/pull/24553 that would add 2 improvements. That PR is still WIP and requires a lots of new UTs. Actually, I'm happy to work on it if someone is interested in giving some feedback now or when it is ready.
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