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https://issues.apache.org/jira/browse/SPARK-54718?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mikhail Nikoliukin updated SPARK-54718:
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Affects Version/s: 4.1.0
(was: 4.2.0)
> Preserve attributes names during CTE newInstance()
> --------------------------------------------------
>
> Key: SPARK-54718
> URL: https://issues.apache.org/jira/browse/SPARK-54718
> Project: Spark
> Issue Type: Task
> Components: SQL
> Affects Versions: 4.1.0
> Reporter: Mikhail Nikoliukin
> Priority: Major
>
> Current implementation of CTERelationRef.newInstance() has incorrect behavior
> if cte has multiple attributes with the same ID but different names. The
> common case of it: referencing one attribute by names with different cases:
> {{SELECT COLNAME, colname FROM t
> }}
> Together with the fact that newInstance() is called during exprId
> deduplication, this leads to inconsistent results: sometimes names in one
> case, sometimes in another
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