zhmin commented on code in PR #39801:
URL: https://github.com/apache/spark/pull/39801#discussion_r1090641475
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/expressions.scala:
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@@ -892,7 +892,7 @@ object NullDownPropagation extends Rule[LogicalPlan] {
* Other optimizations will take advantage of the propagated foldable
expressions. For example,
* this rule can optimize
* {{{
- * SELECT 1.0 x, 'abc' y, Now() z ORDER BY x, y, 3
Review Comment:
Yes, this works. However, this example is very confusing
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