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https://issues.apache.org/jira/browse/CALCITE-6983?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alessandro Solimando reassigned CALCITE-6983:
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Assignee: juntaozhang
> SortJoinTransposeRule should not push SORT past a UNION when SORT's fetch is
> DynamicParam
> -----------------------------------------------------------------------------------------
>
> Key: CALCITE-6983
> URL: https://issues.apache.org/jira/browse/CALCITE-6983
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.39.0
> Reporter: Roman Churganov
> Assignee: juntaozhang
> Priority: Blocker
> Labels: pull-request-available
> Fix For: 1.40.0
>
>
> An issue with `SortJoinTransposeRule`, which is the same as in
> `SortUnionTransposeRule ` has been fixed in CALCITE-6647 . Can be reproduced
> with a query like:
> {code:sql}
> SELECT t5.fn1, t8.m_fn
> FROM (
> SELECT id AS fn1 FROM foo WHERE sd = ?
> UNION SELECT id FROM bar WHERE d = ?
> UNION SELECT id FROM baz WHERE id = ? ) AS t5
> LEFT JOIN (SELECT id AS m_fn FROM (
> SELECT id, aoguid FROM foo2
> WHERE EXISTS (SELECT 1 FROM (
> SELECT buildnum AS fn2 FROM v1_dhouse) AS t7 WHERE aoguid =
> t7.fn2 ) ) AS t ) AS t8
> ON t5.fn1 = t8.m_fn
> FETCH NEXT ? ROWS ONLY
> {code}
> which hangs on building a plan, with a debug log can see growing plans,
> eventually it fails with StackOverflow...,
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