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https://issues.apache.org/jira/browse/PHOENIX-3355?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15614301#comment-15614301
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Maryann Xue commented on PHOENIX-3355:
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So [~lomoree], an easy way to do this is to return the CURRENT_DATE and FLOOR
signatures for function name "NOW" or "TRUNC". I think Calcite does not require
the returned signature to have the same name as used in the query. Only
parameter types and return type matter in a ScalarFunction.
> Register Phoenix built-in functions as Calcite functions
> --------------------------------------------------------
>
> Key: PHOENIX-3355
> URL: https://issues.apache.org/jira/browse/PHOENIX-3355
> Project: Phoenix
> Issue Type: Bug
> Reporter: James Taylor
> Assignee: Eric Lomore
> Labels: calcite
> Attachments: PHOENIX-3355.wip, PHOENIX-3355.wip2
>
>
> We should register all Phoenix built-in functions that don't exist in Calcite.
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