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https://issues.apache.org/jira/browse/FLINK-8518?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16473882#comment-16473882
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Timo Walther commented on FLINK-8518:
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Hi [~Sergey Nuyanzin], if we are blocked on CALCITE-2303 we need to wait until
we update our Calcite version. If DOW can be supported right now, feel free to
open a PR for it.
> Support DOW, EPOCH, DECADE for EXTRACT
> --------------------------------------
>
> Key: FLINK-8518
> URL: https://issues.apache.org/jira/browse/FLINK-8518
> Project: Flink
> Issue Type: Improvement
> Components: Table API & SQL
> Reporter: Timo Walther
> Assignee: Sergey Nuyanzin
> Priority: Major
>
> We upgraded Calcite to version 1.15 in FLINK-7934. The EXTRACT method
> supports more conversion targets. The targets DOW, EPOCH, DECADE should be
> implemented and tested for different datatypes.
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