Yu Xu created CALCITE-7323:
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Summary: 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
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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