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## What changes were proposed in this pull request? A followup of https://github.com/apache/spark/pull/20988 `PhysicalOperation` can collect Project and Filters over a certain plan and substitute the alias with the original attributes in the bottom plan. We can use it in `OptimizeMetadataOnlyQuery` rule to handle the Project and Filter over partitioned relation. ## How was this patch tested? existing test Author: Wenchen Fan <wenchen@databricks.com> Closes #21111 from cloud-fan/refactor. |
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