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https://issues.apache.org/jira/browse/HIVE-15338?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15729442#comment-15729442
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Matt McCline commented on HIVE-15338:
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And is the correct approach to switch to java.sql.Date from java.util.Date?
> Wrong result from non-vectorized DATEDIFF with scalar parameter of type
> DATE/TIMESTAMP
> --------------------------------------------------------------------------------------
>
> Key: HIVE-15338
> URL: https://issues.apache.org/jira/browse/HIVE-15338
> Project: Hive
> Issue Type: Bug
> Components: Hive
> Reporter: Matt McCline
> Assignee: Matt McCline
> Priority: Critical
> Attachments: HIVE-15338.01.patch, HIVE-15338.02.patch
>
>
> Vectorization in vectorized DATEDIFF accidentally treated the scalar
> parameter is type DATE (e.g. CURRENT_DATE) as 0.
> Current Q file test vectorized_date_funcs.q DOES NOT test the DATE/TIMESTAMP
> scalar type case.
> And, non-vectorized cases of DATEDIFF are using UTF and returning the wrong
> results.
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