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https://issues.apache.org/jira/browse/FLINK-16143?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17039913#comment-17039913
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Zili Chen commented on FLINK-16143:
-----------------------------------
[~docete] If we don't support DATE_DIFF, we should remove those dead code from
our codebase.
Actually there are plenty of dummy functions inside blink planner, including
those listed above and BIT_* and more.
> Turn on more date time functions of blink planner
> -------------------------------------------------
>
> Key: FLINK-16143
> URL: https://issues.apache.org/jira/browse/FLINK-16143
> Project: Flink
> Issue Type: New Feature
> Components: Table SQL / Planner
> Reporter: Zili Chen
> Priority: Major
> Fix For: 1.11.0
>
>
> Currently blink planner has a series of built-in functions such as
> DATEDIFF
> DATE_ADD
> DATE_SUB
> which haven't been into used so far. We could add the necessary register,
> generate and convert code to make it available in production scope.
>
> what do you think [~jark]?
>
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