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https://issues.apache.org/jira/browse/CALCITE-7701?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated CALCITE-7701:
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Labels: pull-request-available (was: )
> Support IGNORE NULLS for FIRST_VALUE/LAST_VALUE window functions in the
> enumerable convention
> ---------------------------------------------------------------------------------------------
>
> Key: CALCITE-7701
> URL: https://issues.apache.org/jira/browse/CALCITE-7701
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Affects Versions: 1.42.0
> Reporter: Yu Xu
> Assignee: Yu Xu
> Priority: Major
> Labels: pull-request-available
>
> Currently EnumerableWindow rejected any windowed aggregate that used the
> `IGNORE NULLS` option with a blanket "IGNORE NULLS not supported"
> `UnsupportedOperationException` at code-generation time.
> eg:
> {code:java}
> FIRST_VALUE(x) IGNORE NULLS OVER (ORDER BY y ROWS 1 PRECEDING) {code}
> the SQL above can be parsed, validated and converted to relational algebra
> successfully, but failed during physical implementation in the enumerable
> convention.
>
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