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Posted to reviews@spark.apache.org by GitBox <gi...@apache.org> on 2023/01/13 15:56:07 UTC

[GitHub] [spark] cloud-fan commented on pull request #39556: [WIP][SPARK-42049][SQL] Improve AliasAwareOutputExpression

cloud-fan commented on PR #39556:
URL: https://github.com/apache/spark/pull/39556#issuecomment-1382049013

   One principle we should hold: a plan's output partitioning/ordering must only contain the attributes from its output, otherwise the semantic is hard to define. What do you mean your data is partitioned by a non-existing column?


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