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https://issues.apache.org/jira/browse/HIVE-21503?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16801325#comment-16801325
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Rajesh Balamohan edited comment on HIVE-21503 at 3/26/19 2:50 AM:
------------------------------------------------------------------
It reproduces consistently with case-when. Here is the simplest query which was
reproducing the issue.
{noformat}
with test as (
select (CASE
WHEN name like '%radio%' THEN 'radio'
ELSE name
END) AS name from tmp.delete_vect_test
)
select name, count(*) as c from test group by name order by c desc limit
10;{noformat}
was (Author: rajesh.balamohan):
It reproduces consistently with case-when. Here is the simplest query which was
reproducing the issue.
```
with test as (
select (CASE
WHEN name like '%radio%' THEN 'radio'
ELSE name
END) AS name from tmp.delete_vect_test
)
select name, count(*) as c from test group by name order by c desc limit 100;
```
> Vectorization: query with regex gives incorrect results with vectorization
> --------------------------------------------------------------------------
>
> Key: HIVE-21503
> URL: https://issues.apache.org/jira/browse/HIVE-21503
> Project: Hive
> Issue Type: Bug
> Components: Vectorization
> Reporter: Rajesh Balamohan
> Assignee: Laszlo Bodor
> Priority: Major
>
> i see wrong results with vectorization. Without vectorization, it works fine.
> Suspecting minor issue in {{StringGroupColConcatCharScalar}}
> {noformat}
> e.g
> WHEN x like '%radio%' THEN 'radio'
> WHEN x like '%tv%' THEN 'tv'
> {noformat}
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