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https://issues.apache.org/jira/browse/FLINK-11229?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16731360#comment-16731360
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Hequn Cheng commented on FLINK-11229:
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[~yanghua] It seems TableApi has already supported scalar functions for where
and filter.
> Support ScalarFunction for the where/filter clause.
> ---------------------------------------------------
>
> Key: FLINK-11229
> URL: https://issues.apache.org/jira/browse/FLINK-11229
> Project: Flink
> Issue Type: Sub-task
> Components: Table API & SQL
> Reporter: vinoyang
> Assignee: vinoyang
> Priority: Major
>
> Currently, the where/filter clause only supports expressions, and we can
> enhance its extensibility by letting it support scalar functions.
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