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https://issues.apache.org/jira/browse/FLINK-31663?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17825260#comment-17825260
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Jacky Lau commented on FLINK-31663:
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[~Sergey Nuyanzin] ok. if the array_except and array_concat have duplicates
while array_union do not have. we should add description in the docs
> 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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