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https://issues.apache.org/jira/browse/IGNITE-21311?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17826059#comment-17826059
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Iurii Gerzhedovich commented on IGNITE-21311:
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[~mzhuravkov] Thanks for the contribution!
> Sql. Partition pruning. Introduce pruning for correlated scans
> --------------------------------------------------------------
>
> Key: IGNITE-21311
> URL: https://issues.apache.org/jira/browse/IGNITE-21311
> Project: Ignite
> Issue Type: Improvement
> Components: sql
> Reporter: Konstantin Orlov
> Assignee: Maksim Zhuravkov
> Priority: Major
> Labels: ignite-3
> Time Spent: 50m
> Remaining Estimate: 0h
>
> Apart of static pruning made on preparation step, we may also introduce
> dynamic pruning for correlated scans.
> In case of correlated join, a predicate on the right shoulder should be
> evaluated based on the context provided from the left shoulder. This context
> is not known until runtime, those partitions are not trimmed on preparation
> step. However, this very case doesn't differ match from the static pruning:
> the only difference here is a time when pruning should be applied.
> In order to support dynamic pruning, we should save pruning meta during
> planning phase in a scan node. Later, in runtime, we should evaluate pruning
> function in order to derive partitions satisfying the predicate. Those
> partitions should be used to do a lookup into a table.
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