[CALCITE-5761] DATE_TRUNC compile-time evaluation produces wrong results

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.34.0
• Fix Version/s: 1.35.0
• Component/s: core
• Labels: pull-request-available
• Assignee: Unassigned
• Reporter: Mihai Budiu
• Created: 07/Jun/23 03:35
• Updated: 27/Jul/23 10:22
• Resolved: 16/Jun/23 16:58

Description

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"

Issue Links

• links to: GitHub Pull Request #3253