Roman Churganov created CALCITE-6983:
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Summary: 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: 1.37.0
Reporter: Roman Churganov
Fix For: 1.39.0
A query like
{code:sql}
SELECT x.c11 FROM (
SELECT tt1.c11 FROM (
SELECT c11 FROM sch1.foo as cp1 LIMIT ?
) AS tt1
UNION ALL
SELECT tt2.c11 FROM (
SELECT c11 FROM sch1.foo as cp2 LIMIT ?
) AS tt2
) AS x LIMIT ?
{code}
hangs on building a plan, with debug log, can see a growing plans with a
nested LogicalSort nodes, eventually it fails with StackOverflow...,
{noformat}
.....
LogicalSort(fetch=[?2])
LogicalSort(subset=[rel#3740:RelSubset#269.NONE.[]], fetch=[?2])
LogicalSort(subset=[rel#3670:RelSubset#264.NONE.[]], fetch=[?2])
LogicalSort(subset=[rel#3600:RelSubset#259.NONE.[]], fetch=[?2])
LogicalSort(subset=[rel#3530:RelSubset#254.NONE.[]], fetch=[?2])
LogicalSort(subset=[rel#3460:RelSubset#249.NONE.[]], fetch=[?2])
LogicalSort(subset=[rel#3390:RelSubset#244.NONE.[]], fetch=[?2])
LogicalSort(subset=[rel#3320:RelSubset#239.NONE.[]], fetch=[?2])
LogicalSort(subset=[rel#3250:RelSubset#234.NONE.[]], fetch=[?2])
LogicalSort(subset=[rel#3180:RelSubset#229.NONE.[]],
fetch=[?2])
LogicalSort(subset=[rel#3110:RelSubset#224.NONE.[]],
fetch=[?2])
LogicalSort(subset=[rel#3040:RelSubset#219.NONE.[]],
fetch=[?2])
...
{noformat}
Seem like an issue with `SortUnionTransposeRule `
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