peter-toth edited a comment on issue #24495: [SPARK-27604][SQL] Enhance constant propagation to constraint propagation URL: https://github.com/apache/spark/pull/24495#issuecomment-487907276 This implementation of simplification is more complex than `ConstantPropagation` was and so it can be slower. But it performs equally well on the benchmark of https://github.com/apache/spark/pull/19912.
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