rubenada commented on code in PR #5070:
URL: https://github.com/apache/calcite/pull/5070#discussion_r3518297700
##########
core/src/main/java/org/apache/calcite/rex/RexSimplify.java:
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@@ -2126,6 +2126,13 @@ private <C extends Comparable<C>> RexNode
simplifyUsingPredicates(RexNode e,
} else if (rangeSet2.equals(RangeSets.rangeSetAll())) {
// Range is always satisfied given these predicates; but nullability
might
// be problematic
+ if (unknownAs != UNKNOWN) {
+ // If unknownAs FALSE: row is already excluded for null input, so the
IS_NOT_NULL
Review Comment:
added new test covering 3 cases
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