Kirill Tkalenko created CALCITE-7842:
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Summary: 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
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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