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https://issues.apache.org/jira/browse/CALCITE-5761?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17730300#comment-17730300
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Tanner Clary commented on CALCITE-5761:
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[~mbudiu] I think you could also use an illegal argument exception, if you
think that's better. For pasting code, you can use the {/code:java/} [insert
code here] {/code:java/} (remove slashes) hope this helps !
> DATE_TRUNC compile-time evaluation produces wrong results
> ---------------------------------------------------------
>
> Key: CALCITE-5761
> URL: https://issues.apache.org/jira/browse/CALCITE-5761
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.34.0
> Reporter: Mihai Budiu
> Priority: Minor
>
> Adding the following 3 tests to SqlOperatorTest.testDateTrunc produces
> assertion failures.
> f.checkScalar("date_trunc(date '2015-02-19', decade)",
> "2010-01-01", "DATE NOT NULL");
> f.checkScalar("date_trunc(date '2015-02-19', century)",
> "2001-01-01", "DATE NOT NULL");
> f.checkScalar("date_trunc(date '2015-02-19', millennium)",
> "1001-01-01", "DATE NOT NULL");
> Results produced:
> Query: values (date_trunc(date '2015-02-19', decade))
> Expected: is "2010-01-01"
> but: was "2015-01-05"
> Query: values (date_trunc(date '2015-02-19', century))
> Expected: is "2001-01-01"
> but: was "2012-09-17"
> Query: values (date_trunc(date '2015-02-19', millennium))
> Expected: is "1001-01-01"
> but: was "2002-11-09"
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