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https://issues.apache.org/jira/browse/CALCITE-922?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14967915#comment-14967915
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Julian Hyde commented on CALCITE-922:
-------------------------------------
Concur with [~vlsi]'s comments. You should not call getSign(). Change the test
to {{INTERVAL '2' DAY}} and see whether you get the right result.
Does {{select 5 * (INTERVAL '1' DAY) from emp}} also reproduce the problem? I
suspect it does. If so, remove 'CAST' from the description of this case.
> CAST(...) * (INTERVAL constant) results into Internal Error
> ------------------------------------------------------------
>
> Key: CALCITE-922
> URL: https://issues.apache.org/jira/browse/CALCITE-922
> Project: Calcite
> Issue Type: Bug
> Components: core
> Reporter: Sean Hsuan-Yi Chu
> Assignee: Julian Hyde
>
> For example,
> {code}
> select cast(empno as Integer) * (INTERVAL '1' DAY)
> from emp
> {code}
> results into
> {code}
> java.lang.AssertionError: Internal error: invalid literal: INTERVAL '1' DAY
> {code}
> The reason is that INTERVAL constant is not extracted properly in the cases
> where this constant times a CAST() function
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