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https://issues.apache.org/jira/browse/FLINK-31663?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17824688#comment-17824688
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Dawid Wysakowicz commented on FLINK-31663:
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I don't see how `array_union` is related to `array_except`. Those are two
separate functions. Yes, we should've investigated it further when implementing
`ARRAY_UNION`, but I think it's too late by now, imo. Unless [~MartijnVisser]
thinks otherwise and we should reinvestigate `array_union`.
> Add ARRAY_EXCEPT supported in SQL & Table API
> ---------------------------------------------
>
> Key: FLINK-31663
> URL: https://issues.apache.org/jira/browse/FLINK-31663
> Project: Flink
> Issue Type: Sub-task
> Components: Table SQL / API
> Reporter: luoyuxia
> Assignee: Hanyu Zheng
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.20.0
>
>
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