mgaido91 commented on issue #23057: [SPARK-26078][SQL] Dedup self-join attributes on IN subqueries URL: https://github.com/apache/spark/pull/23057#issuecomment-451214227 @cloud-fan yes, this affects 2.3/2.4 too. Let me know if you want me to open the PRs for backporting it there. I am just wondering what to do for 2.2, since there is a discussion about its last release. If we want this there too, we should backport also SPARK-21835. What do you think? cc @viirya too
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