[
https://issues.apache.org/jira/browse/IMPALA-13873?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17936574#comment-17936574
]
Daniel Becker commented on IMPALA-13873:
----------------------------------------
More reduced versions that also produce the error:
{code:java}
select t.* from
(select
a,
b,
min(b) over (partition by a) min_b
from
(
select
10 a,
10 b
) u1
union
select 10, 10, 20) t
where t.b = t.min_b;{code}
{code:java}
WITH u1 AS (select 10 a, 10 b),
t AS (select a, b, min(b) over (partition by a) min_b from u1 UNION select 10,
10, 20)
select t.* from t where t.b = t.min_b;{code}
> 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
> 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.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
