[jira] [Commented] (SPARK-24012) Union of map and other compatible column

["Apache Spark (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-24012?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16442615#comment-16442615 ] 

Apache Spark commented on SPARK-24012:
--------------------------------------

User 'liutang123' has created a pull request for this issue:
https://github.com/apache/spark/pull/21100

> Union of map and other compatible column
> ----------------------------------------
>
>                 Key: SPARK-24012
>                 URL: https://issues.apache.org/jira/browse/SPARK-24012
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 2.1.0, 2.2.1
>            Reporter: Lijia Liu
>            Priority: Major
>
> Union of map and other compatible column result in unresolved operator 'Union; exception
> Reproduction
> spark-sql>select map(1,2), 'str' union all select map(1,2,3,null), 1
> Output:
> Error in query: unresolved operator 'Union;;
> 'Union
> :- Project [map(1, 2) AS map(1, 2)#106, str AS str#107]
> : +- OneRowRelation$
> +- Project [map(1, cast(2 as int), 3, cast(null as int)) AS map(1, CAST(2 AS INT), 3, CAST(NULL AS INT))#109, 1 AS 1#108]
>  +- OneRowRelation$
>  



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