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https://issues.apache.org/jira/browse/CALCITE-2772?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17517119#comment-17517119
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Ian Bertolacci commented on CALCITE-2772:
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Whats the status of this? There seems to be an open PR, but there hasn't been
any movement on it for about 2 years.
> Support varargs for user-defined functions (UDFs)
> -------------------------------------------------
>
> Key: CALCITE-2772
> URL: https://issues.apache.org/jira/browse/CALCITE-2772
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Reporter: pengzhiwei
> Assignee: Chunwei Lei
> Priority: Major
> Labels: pull-request-available
> Attachments: support_varargs_udf.patch
>
> Time Spent: 5h 50m
> Remaining Estimate: 0h
>
> Support varargs for user-defined functions as the case followed:
> {code:java}
> public class ConcatWs {
> public String eval(String sep, String... strs) {...}
> }{code}
>
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