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