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https://issues.apache.org/jira/browse/CALCITE-6092?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17783432#comment-17783432
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Julian Hyde commented on CALCITE-6092:
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I don't understand everything that's going on here (and don't want to). If this
bug is a duplicate, or requires another bug to be fixed before development can
start, then you should mark this bug as such.
> Invalid test cases in CAST String to Time
> -----------------------------------------
>
> Key: CALCITE-6092
> URL: https://issues.apache.org/jira/browse/CALCITE-6092
> Project: Calcite
> Issue Type: Bug
> Reporter: Jerin John
> Priority: Major
>
> Encountered some
> [tests|https://github.com/apache/calcite/blob/590ec85f0fcff7173c288c350c3f60e640976a34/testkit/src/main/java/org/apache/calcite/test/SqlOperatorTest.java#L1237-L1238]
> within SqlOperatorTest file for the CAST operator on String to Datetime
> conversions, which are found to be invalid time strings on some tested
> instances of DBs like BQ, MySql, Postgres.
> It seems these tests were originally ignored as `BAD_DATETIME_MESSAGE` but
> then updated to verify conversion performed by the CAST operator (refer to
> JIRA ticket: CALCITE-5554 and
> [commit|https://github.com/apache/calcite/commit/625a2e03c4c5583279350bf04e3db2a31b1ec411#diff-fdd0c725fc7c6fd56965f59b1d51e4c7a9b5b5be27da2e54b8b8273dc980cd64R1118-R1119])
> Example test case (L1223):
> {{cast('1241241' as TIME)}} | expected: "72:40:12" | actual: "16:40:12"
> The string '1241241' is being parsed as number of hours, and internal
> conversion into milliseconds is done as {{{}1241241 * (int) MILLIS_PER_HOUR
> }} which results in na INT overflow.
> The resultant overflowed value is 1701612160 milliseconds = 472.670044444
> hours, and 472 % 24 is 16 (and .67 is roughly 2/3 so 40ish minutes seems
> legit)
> Considering that multiple dialects catch these cases as invalid time strings
> for conversion, code should be updated to handle them as exceptions and the
> tests to be corrected to reflect this behavior.
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