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Posted to issues@flink.apache.org by "jackylau (Jira)" <ji...@apache.org> on 2023/04/20 10:53:00 UTC

[jira] [Commented] (FLINK-31682) map_from_arrays should take whether allow duplicate keys and null key into consideration

    [ https://issues.apache.org/jira/browse/FLINK-31682?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17714538#comment-17714538 ] 

jackylau commented on FLINK-31682:
----------------------------------

hi [~Sergey Nuyanzin] , i supported this here https://issues.apache.org/jira/browse/FLINK-31691 , when it merged, i will fix this 

do you have time to review it ?

> map_from_arrays should take whether allow duplicate keys and null key into consideration
> ----------------------------------------------------------------------------------------
>
>                 Key: FLINK-31682
>                 URL: https://issues.apache.org/jira/browse/FLINK-31682
>             Project: Flink
>          Issue Type: Improvement
>          Components: Table SQL / Planner
>    Affects Versions: 1.18.0
>            Reporter: jackylau
>            Priority: Major
>             Fix For: 1.18.0
>
>
> after research the spark/presto/maxcompute about map_from_arrays/map_from_entries, there all support duplicate keys and null key  for the most part
>  
> spark https://github.com/apache/spark/pull/21258/files
> maxcompute [https://www.alibabacloud.com/help/en/maxcompute/latest/complex-type-functions#section-7ue-e91-m0s]
> presto https://prestodb.io/docs/current/functions/map.html



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