Vladimir Sitnikov created CALCITE-4388:
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Summary: RexNode#isAlwaysFalse and isAlwaysTrue should be aligned
with RexSimplify#isSafeExpression
Key: CALCITE-4388
URL: https://issues.apache.org/jira/browse/CALCITE-4388
Project: Calcite
Issue Type: Bug
Components: core
Affects Versions: 1.26.0
Reporter: Vladimir Sitnikov
{{(1/0) IS NULL}} should not result in {{isAlwaysFalse}}.
Currently, {{RexSimplify}} knows that 1/0 must not be simplified, however,
{{isAlwaysTrue}} and {{isAlwaysFalse}} are still wrong.
That might result in wrong data, especially when the client code calls
{{isAlways...}}
[~kgyrtkirk], I see you contributed a lot to simplification and
{{SafeRexVisitor}}. Are you interested in improving {{isAlways...}}?
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