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https://issues.apache.org/jira/browse/CALCITE-7323?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yu Xu reopened CALCITE-7323:
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> Result of cast Number to Boolean is not correct
> -----------------------------------------------
>
> Key: CALCITE-7323
> URL: https://issues.apache.org/jira/browse/CALCITE-7323
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.41.0
> Reporter: Yu Xu
> Assignee: Yu Xu
> Priority: Minor
> Labels: pull-request-available
> Fix For: 1.42.0
>
>
> This test in SqlOperatorTest:
> {code:java}
> SqlOperatorFixture f = fixture();
> f.checkScalar("CAST(0 AS BOOLEAN)", "false", "BOOLEAN NOT NULL");
> f.checkScalar("CAST(1 AS BOOLEAN)", "false", "BOOLEAN NOT NULL"); {code}
>
> Based on this test result, converting any numeric type to Boolean always
> returns false, which seems unreasonable.
> Non-zero numbers should be converted to true, and zero to false. This is just
> my understanding.
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