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https://issues.apache.org/jira/browse/CALCITE-7842?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated CALCITE-7842:
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Labels: pull-request-available (was: )
> Multiset operators return incorrect results for ROW elements
> ------------------------------------------------------------
>
> Key: CALCITE-7842
> URL: https://issues.apache.org/jira/browse/CALCITE-7842
> Project: Calcite
> Issue Type: Bug
> Reporter: Kirill Tkalenko
> Assignee: Kirill Tkalenko
> Priority: Major
> Labels: pull-request-available
>
> Multiset operators compare {{ROW}} elements by reference rather than by field
> values, causing incorrect results for independently constructed equal rows.
> Affected operators: {{{}MEMBER OF{}}}, {{{}IS A SET{}}}, {{{}SUBMULTISET
> OF{}}}, {{{}MULTISET INTERSECT ALL/DISTINCT{}}}, {{{}MULTISET EXCEPT
> ALL/DISTINCT{}}}, and {{{}MULTISET UNION DISTINCT{}}}.
> {code:java}
> SELECT ROW(1, 'Foo') MEMBER OF MULTISET[ROW(x, y)] FROM (VALUES (1, 'Foo'),
> (2, 'Bar') ) AS t(x, y);{code}
> Expected: {{{}true{}}}, {{{}false{}}}.
> Actual: {{{}false{}}}, {{{}false{}}}.
> The runtime implementations use Java collection equality, which compares
> {{Object[]}} row values by reference.
>
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