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https://issues.apache.org/jira/browse/IMPALA-8891?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tim Armstrong updated IMPALA-8891:
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Labels: newbie (was: )
> concat_ws() null handling is non-standard
> -----------------------------------------
>
> Key: IMPALA-8891
> URL: https://issues.apache.org/jira/browse/IMPALA-8891
> Project: IMPALA
> Issue Type: Bug
> Components: Backend
> Affects Versions: Impala 3.2.0, Impala 3.3.0
> Reporter: Tim Armstrong
> Priority: Major
> Labels: newbie
>
> [~grahn] reports
> {quote}Looks like Impala’s CONCAT_WS() does not behave correctly if an
> argument is NULL — it returns NULL and it should not. Mismatch between
> Hive/MySQL and Impala (and apologies for not filing a bug)
> {quote}
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