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https://issues.apache.org/jira/browse/SPARK-47070?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wenchen Fan resolved SPARK-47070.
---------------------------------
Fix Version/s: 4.0.0
Resolution: Fixed
> Subquery rewrite inside an aggregation makes an aggregation invalid
> -------------------------------------------------------------------
>
> Key: SPARK-47070
> URL: https://issues.apache.org/jira/browse/SPARK-47070
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 3.5.0
> Reporter: Anton Lykov
> Assignee: Anton Kirillov
> Priority: Major
> Labels: pull-request-available
> Fix For: 4.0.0
>
>
> When an in/exists-subquery appears inside an aggregate expression within a
> top-level GROUP BY, it gets rewritten and a new `exists` variable is
> introduced. However, this variable is incorrectly handled in aggregation. For
> example, consider the following query:
> ```
> SELECT
> CASE
> WHEN t1.id IN (SELECT id FROM t2) THEN 10
> ELSE -10
> END AS v1
> FROM t1
> GROUP BY t1.id;
> ```
>
> Executing it leads to the following error:
> ```
> java.lang.IllegalArgumentException: Cannot find column index for attribute
> 'exists#844' in: Map()
> ```
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