[jira] [Updated] (FLINK-12200) [Table API] Support UNNEST for MAP types

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-12200?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated FLINK-12200:
-----------------------------------
    Labels: pull-request-available  (was: )

> [Table API] Support UNNEST for MAP types 
> -----------------------------------------
>
>                 Key: FLINK-12200
>                 URL: https://issues.apache.org/jira/browse/FLINK-12200
>             Project: Flink
>          Issue Type: Improvement
>          Components: Table SQL / Planner
>    Affects Versions: 1.7.2, 1.7.3, 1.8.0, 1.8.1
>            Reporter: Artsem Semianenka
>            Assignee: Artsem Semianenka
>            Priority: Major
>              Labels: pull-request-available
>   Original Estimate: 24h
>  Remaining Estimate: 24h
>
> In case if the input dataset has the following schema :
> Row(a: Integer, b: Long, c: Map<String, String>)
> I would like to have the ability to execute the SQL query like:
> {code:sql}
> SELECT a, k, v FROM src, UNNEST(c) as m (k,v)
> {code}
> Currently, the UNNEST operator is supported only for ARRAY and MULTISET  
> I would like to propose adding the support of UNNEST functionality for MAP types.



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