[jira] [Commented] (SPARK-34714) collect_list(struct()) fails when used with GROUP BY

["Manu Zhang (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-34714?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17450236#comment-17450236 ] 

Manu Zhang commented on SPARK-34714:
------------------------------------

FYI, this was resolved by https://issues.apache.org/jira/browse/SPARK-34713 and https://issues.apache.org/jira/browse/SPARK-34749

 

> collect_list(struct()) fails when used with GROUP BY
> ----------------------------------------------------
>
>                 Key: SPARK-34714
>                 URL: https://issues.apache.org/jira/browse/SPARK-34714
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 3.1.1
>         Environment: Databricks Runtime 8.0
>            Reporter: Lauri Koobas
>            Priority: Major
>             Fix For: 3.1.2
>
>
> The following is failing in DBR8.0 / Spark 3.1.1, but works in earlier DBR and Spark versions:
> {quote}with step_1 as (
>     select 'E' as name, named_struct('subfield', 1) as field_1
> )
> select name, collect_list(struct(field_1.subfield))
> from step_1
> group by 1
> {quote}
> Fails with the following error message:
> {quote}AnalysisException: cannot resolve 'struct(step_1.`field_1`.`subfield`)' due to data type mismatch: Only foldable string expressions are allowed to appear at odd position, got: NamePlaceholder
> {quote}
> If you modify the query in any of the following ways then it still works::
>  * if you remove the field "name" and the "group by 1" part of the query
>  * if you remove the "struct()" from within the collect_list()
>  * if you use "named_struct()" instead of "struct()" within the collect_list()
> Similarly collect_set() is broken and possibly more related functions, but I haven't done thorough testing.



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