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Posted to issues@calcite.apache.org by "Vladimir Sitnikov (Jira)" <ji...@apache.org> on 2020/11/12 16:13:00 UTC

[jira] [Created] (CALCITE-4398) RexSimplify introduces cast(nullable as nonnull)

Vladimir Sitnikov created CALCITE-4398:
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             Summary: RexSimplify introduces cast(nullable as nonnull)
                 Key: CALCITE-4398
                 URL: https://issues.apache.org/jira/browse/CALCITE-4398
             Project: Calcite
          Issue Type: Bug
          Components: core
    Affects Versions: 1.26.0
            Reporter: Vladimir Sitnikov


{noformat}
isNotNull(case_(case_(trueLiteral, isFalse(lt(vInt(1), literal(0))), trueLiteral), trueLiteral, falseLiteral))
{noformat}

is optimized to

{noformat}IS NOT NULL(CAST(>=(?0.int1, 0)):BOOLEAN NOT NULL){noformat}

which looks strange, since it casts nullable value to a non-null type.

/cc [~kgyrtkirk]



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