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https://issues.apache.org/jira/browse/CALCITE-6572?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17881434#comment-17881434
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Julian Hyde commented on CALCITE-6572:
--------------------------------------
Thanks for updating the title. But when you update the title of the ticket,
check that the description still makes sense. I'll fix it.
Please make sure that both TO_CHAR (added in CALCITE-5619) and TO_CHAR_PG (and
CALCITE-6358) are tested. You should also test calling with a null second
argument.
> Add more tests for NULL result of TO_CHAR PostgreSQL function
> -------------------------------------------------------------
>
> Key: CALCITE-6572
> URL: https://issues.apache.org/jira/browse/CALCITE-6572
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.37.0
> Reporter: Claude Brisson
> Assignee: Norman Jordan
> Priority: Minor
> Labels: pull-request-available
>
> We would expect the result of TO_CHAR(<date or timestamp>, <format>) to be
> nullable, while it is not for now.
>
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