viirya commented on a change in pull request #23343: [SPARK-26390][SQL]
ColumnPruning rule should only do column pruning
URL: https://github.com/apache/spark/pull/23343#discussion_r242537645
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File path:
sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/optimizer/ColumnPruningSuite.scala
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@@ -34,6 +34,7 @@ class ColumnPruningSuite extends PlanTest {
val batches = Batch("Column pruning", FixedPoint(100),
PushDownPredicate,
ColumnPruning,
+ RemoveNoopOperators,
Review comment:
Is this added to remove top `Project('b :: Nil ...)`? Without that, this
test can be unchanged?
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