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https://issues.apache.org/jira/browse/SPARK-35789?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17364425#comment-17364425
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Apache Spark commented on SPARK-35789:
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User 'allisonwang-db' has created a pull request for this issue:
https://github.com/apache/spark/pull/32937
> Lateral join should only be used with subquery
> ----------------------------------------------
>
> Key: SPARK-35789
> URL: https://issues.apache.org/jira/browse/SPARK-35789
> Project: Spark
> Issue Type: Task
> Components: SQL
> Affects Versions: 3.2.0
> Reporter: Allison Wang
> Priority: Major
>
> This is a follow up for SPARK-34382. Currently the keyword LATERAL can be
> used in front of a `relationPrimary`, which consists of more than just
> subqueries, for example:
> select * from t1, lateral t2
> Such syntax is not allowed in Postgres. LATERAL should only be used in front
> of a subquery.
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