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https://issues.apache.org/jira/browse/FLINK-31663?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17824686#comment-17824686
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Jacky Lau commented on FLINK-31663:
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[~dwysakowicz] i see, thanks for your response.
Since the behavior of array_union is already aligned with Spark's(without
duplicates ), if we don't align here, the logic of the entire function would
seem inconsistent. should we change the behavior if array_union. but if we
change it ,it will cause version compatibility problem
> 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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