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https://issues.apache.org/jira/browse/SPARK-59536?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Uroš Bojanić reassigned SPARK-59536:
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Assignee: Aleksei Akhundov
> Parse hint-shaped comments nested in bracketed comments
> -------------------------------------------------------
>
> Key: SPARK-59536
> URL: https://issues.apache.org/jira/browse/SPARK-59536
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Aleksei Akhundov
> Assignee: Aleksei Akhundov
> Priority: Major
> Labels: pull-request-available
>
> Spark SQL fails to parse a valid nested bracketed comment when an inner
> comment starts with the SQL hint prefix {{{}/*+{}}}.
> Reproducer:
> {{SELECT /* outer /*+ inner */ outer tail */ 1 AS col1}}
> Expected behavior:
> {{SELECT 1 AS col1}}
> Actual behavior: the nested {{/*+ inner */}} comment is parsed as a SQL hint,
> causing the remaining outer comment text to be parsed as SQL and the query to
> fail
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