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https://issues.apache.org/jira/browse/IMPALA-13873?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Daniel Becker resolved IMPALA-13873.
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Resolution: Fixed
> Missing equivalence conjunct in aggregation node with inline views
> ------------------------------------------------------------------
>
> Key: IMPALA-13873
> URL: https://issues.apache.org/jira/browse/IMPALA-13873
> Project: IMPALA
> Issue Type: Bug
> Components: Frontend
> Affects Versions: Impala 4.5.0
> Reporter: Peter Rozsa
> Assignee: Daniel Becker
> Priority: Major
>
> The following query yields incorrect results:
> select t.* from
> (select
> a,
> b,
> min(b) over (partition by a) min_b
> from
> (
> select
> 10 a,
> 10 b
> union
> select
> 10 a,
> 20 b
> union
> select
> 10 a,
> 10 b
> ) u1
> union
> select 10, 10, 20) t
> where t.b = t.min_b;
> Result:
> +----+----+-------+
> | a | b | min_b |
> +----+----+-------+
> | 10 | 20 | 10 |
> | 10 | 10 | 20 |
> | 10 | 10 | 10 |
> +----+----+-------+
> Correct result:
> +----+----+-------+
> | a | b | min_b |
> +----+----+-------+
> | 10 | 10 | 10 |
> +----+----+-------+
> The underlying cause is that at the analyze part, the filter conjunct (t.b =
> t.min_b) is removed at
> [https://github.com/apache/impala/blob/356b7e5ddf7868968fb76ca55a8046d0291388fd/fe/src/main/java/org/apache/impala/analysis/Analyzer.java#L2955]
> This conjunct should not be removed.
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