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https://issues.apache.org/jira/browse/CALCITE-5865?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gian Merlino resolved CALCITE-5865.
-----------------------------------
Resolution: Fixed
> ClassCastException with FLOOR and CEIL on conformances that are not builtin
> ---------------------------------------------------------------------------
>
> Key: CALCITE-5865
> URL: https://issues.apache.org/jira/browse/CALCITE-5865
> Project: Calcite
> Issue Type: Bug
> Reporter: Gian Merlino
> Priority: Blocker
> Labels: pull-request-available
> Fix For: 1.35.0
>
>
> CALCITE-5747 introduced some BigQuery-specific logic for FLOOR and CEIL that
> is keyed off the conformance being {{SqlConformanceEnum.BIG_QUERY}}. However,
> it was implemented in such a way that implementations of {{SqlConformance}}
> that are not {{SqlConformanceEnum}} would throw {{ClassCastException}}, due
> to this line in {{Parser.jj}}:
> {code}
> SqlOperator op = SqlStdOperatorTable.floorCeil(floorFlag,
> (SqlConformanceEnum) this.conformance);
> {code}
> Better would be to pass {{this.conformance}} without casting, and adjust
> {{SqlStdOperatorTable.floorCeil}} to handle any kind of conformance.
> This affects us in Apache Druid land, because we have a conformance that
> extends {{SqlAbstractConformance}}.
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