Vladimir Sitnikov created CALCITE-2451:
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Summary: RexSimplify: fuse unknownAsFalse and IS TRUE handling
Key: CALCITE-2451
URL: https://issues.apache.org/jira/browse/CALCITE-2451
Project: Calcite
Issue Type: Sub-task
Components: core
Affects Versions: 1.17.0
Reporter: Vladimir Sitnikov
Assignee: Julian Hyde
It looks like {{unknownAsFalse}} duplicates {{IS_TRUE}} handling.
In other words, {{withUnknownAsFalse(true). simplfy(expr)}} is more or less
comparable to {{simplify(isTrue(expr))}}
Implementing {{IS_TRUE/IS_FALSE/...}} simplification possibilities might make
{{unknownAsFalse}} obsolete.
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