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Posted to reviews@spark.apache.org by GitBox <gi...@apache.org> on 2019/04/24 09:29:33 UTC

[GitHub] [spark] mgaido91 commented on issue #24442: [SPARK-27547][SQL] fix DataFrame self-join problems

mgaido91 commented on issue #24442: [SPARK-27547][SQL] fix DataFrame self-join problems
URL: https://github.com/apache/spark/pull/24442#issuecomment-486143946
 
 
   sorry @cloud-fan , just to have a better understanding of your solution, may you please explain me why this is a better approach than the one in #21449?
   Moreover, if this is a better approach than that, why don't we remove the hack there for self-joins?

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