maropu commented on a change in pull request #29515:
URL: https://github.com/apache/spark/pull/29515#discussion_r475200399
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/predicates.scala
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@@ -793,7 +793,9 @@ case class EqualTo(left: Expression, right: Expression)
// | FALSE | FALSE | TRUE | UNKNOWN |
// | UNKNOWN | UNKNOWN | UNKNOWN | UNKNOWN |
// +---------+---------+---------+---------+
- protected override def nullSafeEval(left: Any, right: Any): Any =
ordering.equiv(left, right)
+ protected override def nullSafeEval(left: Any, right: Any): Any = {
+ left == right || ordering.equiv(left, right)
Review comment:
At least, we shoud fix the existing test failures that we found in this
PR. But, this fix looks improper, so could we use `NormalizeNaNAndZero`
instead? cc: @cloud-fan @viirya
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