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https://issues.apache.org/jira/browse/IGNITE-29015?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kirill Tkalenko resolved IGNITE-29015.
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Resolution: Fixed
> SQL Calcite: Provide a unified mechanism for fine-grained SQL semantics
> customization
> -------------------------------------------------------------------------------------
>
> Key: IGNITE-29015
> URL: https://issues.apache.org/jira/browse/IGNITE-29015
> Project: Ignite
> Issue Type: Improvement
> Reporter: Kirill Tkalenko
> Assignee: Kirill Tkalenko
> Priority: Major
> Labels: ignite-2
> Time Spent: 20m
> Remaining Estimate: 0h
>
> Calcite may require fine-grained settings that affect SQL validation,
> planning, and execution. Currently, *{{IgniteSqlPaginationPolicy}}* is an
> example of such a setting.
> Adding more independent policies may complicate their propagation through the
> query pipeline.
> Consider introducing an immutable *{{IgniteSqlSemantics}}* object that:
> * contains fine-grained SQL settings;
> * is passed through Calcite {*}{{Context}}{*};
> * can be provided by a plugin through {*}{{FrameworkConfig}}{*};
> * has default values preserving existing behavior.
> Initially, it can contain the pagination rounding mode. Later, it can support
> other settings, such as Oracle-compatible handling of {{''}} as {{{}NULL{}}}.
> The initial change should not introduce public configuration or change
> existing SQL behavior.
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