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https://issues.apache.org/jira/browse/SPARK-52217?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wenchen Fan reassigned SPARK-52217:
-----------------------------------
Assignee: Mihailo Aleksic
> Skip outer reference validation under Filter in single-pass resolver
> --------------------------------------------------------------------
>
> Key: SPARK-52217
> URL: https://issues.apache.org/jira/browse/SPARK-52217
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 4.1.0
> Reporter: Mihailo Aleksic
> Assignee: Mihailo Aleksic
> Priority: Major
> Labels: pull-request-available
>
> Validation for outer references in subquery expressions is done in the bottom
> up manner in single-pass resolver. In other words, we do the validation right
> after we resolve the subquery expression and at that moment missing
> attributes haven't been pushed down yet.
> Because of that, we fail with
> UNSUPPORTED_SUBQUERY_EXPRESSION_CATEGORY.MUST_AGGREGATE_CORRELATED_SCALAR_SUBQUERY.
> With the validation disabled, we fail with UNRESOLVED_COLUMN.WITH_SUGGESTION
> on the unhappy path and pass on the happy path which was intended.
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