AngersZhuuuu edited a comment on issue #26437: [SPARK-29800][SQL] Plan non-correlated Exists 's subquery in PlanSubqueries URL: https://github.com/apache/spark/pull/26437#issuecomment-552345568 > makes sense, let's keep the new EXISTS expression. Can we add a `Project(Nil, ...)` on the top to do column pruning? this should be critical for performance. Good suggestion, updated. One point I don't support `LIMIT 1` is that it will change final PhysicalPlan's out put. This may make user confused if user don't know clear about this change. @dilipbiswal For current way, what do you think?
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