Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/18257#discussion_r121270812
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/basicLogicalOperators.scala
---
@@ -500,6 +504,8 @@ case class Range(
extends LeafNode with MultiInstanceRelation {
require(step != 0, s"step ($step) cannot be 0")
+ require(start != end, s"start ($start) cannot be equal to end ($end)")
+ require(start < end ^ step < 0, s"the sign of step ($step) is invalid
for range ($start, $end)")
--- End diff --
I see. You assume we should only use factory `Range` to construct the nodes.
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