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https://issues.apache.org/jira/browse/IGNITE-28947?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18104038#comment-18104038
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Ignite TC Bot commented on IGNITE-28947:
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{panel:title=Branch: [pull/13429/head] Base: [master] : No blockers
found!|borderStyle=dashed|borderColor=#ccc|titleBGColor=#D6F7C1}{panel}
{panel:title=Branch: [pull/13429/head] Base: [master] : New Tests
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{color:#00008b}Calcite SQL 3{color} [[tests
1|https://ci2.ignite.apache.org/viewLog.html?buildId=9251918]]
* {color:#013220}IgniteCalciteTestSuite3:
RecursiveCteIntegrationTest.testHierarchicalQueryIsNotSupported - PASSED{color}
{panel}
[TeamCity *--> Run :: All*
Results|https://ci2.ignite.apache.org/viewLog.html?buildId=9251951&buildTypeId=IgniteTests24Java8_RunAll]
{color:#ffffff}tcbot-analysis-comment chainBuildId=9251951
rerunBuildIds=9277305{color}
> Handle recursive CTE planning gracefully
> ----------------------------------------
>
> Key: IGNITE-28947
> URL: https://issues.apache.org/jira/browse/IGNITE-28947
> Project: Ignite
> Issue Type: Bug
> Reporter: Vladislav Pyatkov
> Assignee: Vladislav Pyatkov
> Priority: Major
> Labels: calcite, ignite-2, sql
> Attachments: RecursiveCteIntegrationTest.java
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> This ticket does not add support for recursive CTE execution.
> h3. Motivation
> Calcite already parses and validates WITH RECURSIVE queries and creates
> transient tables and TableSpool operators during planning. Ignite Calcite
> metadata currently assumes that every TableScan unwraps to IgniteTable.
> For transient CTE tables, this can cause internal metadata failures, for
> example in collation or distribution calculation, before the planner reaches
> the actual unsupported feature boundary.
> Update metadata handling for transient tables so that recursive CTE planning
> fails with a clear, stable “recursive CTE is not supported” error rather than
> an internal exception.
> h3. Definition of done
> * A recursive CTE does not fail with an internal exception.
> * The user receives a clear unsupported-feature error for recursive CTEs.
> * Existing non-recursive query planning remains unchanged.
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