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https://issues.apache.org/jira/browse/CALCITE-922?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14971739#comment-14971739
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Sean Hsuan-Yi Chu commented on CALCITE-922:
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Responding to the review comment, for INTERVAL_YEAR_MONTH or INTERVAL_DAY_TIME,
I let the value() method return "sign multiplied by its value in milli-second".
Please see the pull request:
https://github.com/apache/incubator-calcite/pull/155/commits
> 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: Sean Hsuan-Yi Chu
>
> 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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