dilipbiswal commented on a change in pull request #24271: [SPAR-27342][SQL]
Optimize Limit 0 queries
URL: https://github.com/apache/spark/pull/24271#discussion_r272067867
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/Optimizer.scala
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@@ -1711,3 +1713,37 @@ object RemoveRepetitionFromGroupExpressions extends
Rule[LogicalPlan] {
}
}
}
+
+/**
+ * Replaces GlobalLimit 0 and LocalLimit 0 nodes (subtree) with empty Local
Relation, as they don't
+ * return any rows.
Review comment:
fix the alignment here ?
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