aokolnychyi commented on code in PR #51146:
URL: https://github.com/apache/spark/pull/51146#discussion_r2159746143
##########
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/util/V2ExpressionBuilder.scala:
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@@ -78,6 +78,7 @@ class V2ExpressionBuilder(e: Expression, isPredicate: Boolean
= false) extends L
expr: Expression, isPredicate: Boolean = false): Option[V2Expression] =
expr match {
case Literal(true, BooleanType) => Some(new AlwaysTrue())
case Literal(false, BooleanType) => Some(new AlwaysFalse())
+ case Cast(Literal(null, NullType), BooleanType, _, _) if isPredicate =>
Some(new AlwaysNull())
Review Comment:
Hm, doing the conversion to V2 predicate in `ResolveTableSpec` overall means
we will not be able to optimize the conditions before the conversion... This is
unlucky.
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