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https://issues.apache.org/jira/browse/HIVE-5490?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13790613#comment-13790613
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Timothy Chen commented on HIVE-5490:
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Nice! was just planning to look at it today and it's already done! Thanks for
fixing this Teddy.
> SUBSTR(col, 1, 0) returns wrong result in vectorized mode
> ---------------------------------------------------------
>
> Key: HIVE-5490
> URL: https://issues.apache.org/jira/browse/HIVE-5490
> Project: Hive
> Issue Type: Bug
> Components: Query Processor
> Affects Versions: 0.13.0
> Reporter: Eric Hanson
> Assignee: Teddy Choi
> Attachments: HIVE-5490.1.patch.txt
>
>
> The query
> select substr(cstring1, 1, 0) from alltypesorc;
> returns all empty strings when
> set hive.vectorized.execution.enabled = false;
> which is the correct result, and returns non-empty strings when
> set hive.vectorized.execution.enabled = true;
> which is not correct.
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