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https://issues.apache.org/jira/browse/SPARK-60614?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated SPARK-60614:
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Labels: pull-request-available (was: )
> Share scalar SQL variable assignment helpers
> --------------------------------------------
>
> Key: SPARK-60614
> URL: https://issues.apache.org/jira/browse/SPARK-60614
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 5.0.0
> Reporter: Vladan Vasić
> Priority: Major
> Labels: pull-request-available
>
> SET VARIABLE and FETCH INTO duplicate the same target-variable uniqueness
> check and construct the same DUPLICATE_ASSIGNMENTS error independently.
> Extract the shared validation into VariableAssignmentUtils, centralize the
> existing error in QueryCompilationErrors, and update both analyzer rules to
> use the shared helper.
> Add a TableOutputResolver.resolveVariableOutputColumns overload accepting
> resolved output attributes and an alias factory. This lets callers reuse
> assignment casts without recursively reading LogicalPlan.output and lets the
> single-pass resolver track aliases through its existing alias provider. Keep
> the existing three-argument entry point and its behavior unchanged.
> This is an internal refactor with no user-facing behavior change. It does not
> add single-pass SET VARIABLE support.
> Validation: Catalyst production compilation and its dependencies passed with
> SBT 1.13.0, JDK 17, and Scala 2.13. Unit and integration tests have not been
> run.
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