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https://issues.apache.org/jira/browse/IGNITE-29012?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kirill Tkalenko updated IGNITE-29012:
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Summary: SQL Calcite: Support recursive CTE with UNION DISTINCT (was:
Support recursive CTE with UNION DISTINCT)
> SQL Calcite: Support recursive CTE with UNION DISTINCT
> ------------------------------------------------------
>
> Key: IGNITE-29012
> URL: https://issues.apache.org/jira/browse/IGNITE-29012
> Project: Ignite
> Issue Type: Improvement
> Reporter: Vladislav Pyatkov
> Assignee: Vladislav Pyatkov
> Priority: Major
> Labels: calcite, ignite-2, sql
> Fix For: 2.19
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> h3.Motivation
> Recursive CTE currently supports only UNION ALL. UNION DISTINCT is required
> to remove previously produced rows during every iteration and to terminate
> cyclic recursive queries.
> h3.Definition of done
> - UNION DISTINCT recursive CTE is supported.
> - Duplicates are removed within and across iterations.
> - Seen-set memory is included in query memory tracking.
> - Cyclic, duplicate, and memory-quota tests are added.
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