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https://issues.apache.org/jira/browse/CALCITE-6248?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17823772#comment-17823772
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Julian Hyde commented on CALCITE-6248:
--------------------------------------
Postel's law applies: "be conservative in what you send, be liberal in what you
accept". If we are sending a date, we need to use ISO-8601 format. But if we
are receiving a date in a cast, we should accept anything reasonable. Certainly
I think leading zeros (or missing leading zeros) are harmless.
> Illegal dates are accepted by casts
> -----------------------------------
>
> Key: CALCITE-6248
> URL: https://issues.apache.org/jira/browse/CALCITE-6248
> Project: Calcite
> Issue Type: Bug
> Components: avatica, core
> Affects Versions: 1.36.0
> Reporter: Mihai Budiu
> Priority: Minor
> Labels: pull-request-available
> Time Spent: 20m
> Remaining Estimate: 0h
>
> The following test passes in SqlOperatorTest:
> {code:java}
> @Test public void testIllegalDate() {
> final SqlOperatorFixture f = fixture();
> f.checkScalar("cast('1945-02-32' as DATE)",
> "1945-03-04", "DATE NOT NULL");
> }
> {code}
> There is no February 32, I suspect that this expression should produce an
> error.
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