xiedeyantu commented on code in PR #4465:
URL: https://github.com/apache/calcite/pull/4465#discussion_r2209014567
##########
core/src/main/java/org/apache/calcite/rex/RexSimplify.java:
##########
@@ -645,6 +645,11 @@ private <C extends Comparable<C>> RexNode
simplifyComparison(RexCall e,
}
}
+ RexNode node = simplifyComparisonWithNull(e, unknownAs);
Review Comment:
My idea is to enter the logic
```
if (againstNull) {
return unknownAs == FALSE
? rexBuilder.makeLiteral(false)
: rexBuilder.makeNullLiteral(e.getType());
}
```
and then consider it a successful simplification.
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