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https://issues.apache.org/jira/browse/SPARK-30727?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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jiaan.geng updated SPARK-30727:
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Parent: SPARK-30374
Issue Type: Sub-task (was: Bug)
> ANSI SQL: LAST_VALUE function
> -----------------------------
>
> Key: SPARK-30727
> URL: https://issues.apache.org/jira/browse/SPARK-30727
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: jiaan.geng
> Priority: Major
>
> I have checked PostgreSQL, Vertica, Oracle, Redshift, Presto, Teradata,
> FIRST_VALUE|LAST_VALUE is always used as a window function, not as an
> aggregate function.
> The FIRST_VALUE function currently provided can be used as both an
> aggregation function and a window function.
> Maybe we need to re-implement it.
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