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https://issues.apache.org/jira/browse/CALCITE-5264?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aitozi updated CALCITE-5264:
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    Summary: HintStrategy rule exclusion does not match innermost rels  (was: 
Allow HintStrategy exclusion rules check for all the rels of a single match)

> HintStrategy rule exclusion does not match innermost rels
> ---------------------------------------------------------
>
>                 Key: CALCITE-5264
>                 URL: https://issues.apache.org/jira/browse/CALCITE-5264
>             Project: Calcite
>          Issue Type: Improvement
>          Components: core
>            Reporter: Aitozi
>            Assignee: Aitozi
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 1h
>  Remaining Estimate: 0h
>
> In the https://issues.apache.org/jira/browse/CALCITE-3781, calcite can 
> specify a hint for a relNode to let the planner exclude some rule when 
> optimze. But as [~julianhyde] sail, it's strange to only check for the 
> {{rels[0]}}. If we have a rule to push a common project to the source scan, 
> we want to prevent the common project optimized from the ProjectMerge Rule, 
> it can not work, as the preserved one is at the bottom. 
> So I proposal to check all the rels for the rule.



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