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https://issues.apache.org/jira/browse/SPARK-31535?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17091299#comment-17091299
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Peter Toth commented on SPARK-31535:
------------------------------------
Hmm, for some reason my PR ([https://github.com/apache/spark/pull/28318])
didn't get linked to this ticket automatically.
> Fix nested CTE substitution
> ---------------------------
>
> Key: SPARK-31535
> URL: https://issues.apache.org/jira/browse/SPARK-31535
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Peter Toth
> Priority: Blocker
> Labels: correctness
>
> The following nested CTE should result empty result instead of {{1}}
> {noformat}
> WITH t(c) AS (SELECT 1)
> SELECT * FROM t
> WHERE c IN (
> WITH t(c) AS (SELECT 2)
> SELECT * FROM t
> )
> {noformat}
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