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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