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https://issues.apache.org/jira/browse/HIVE-15982?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15973721#comment-15973721
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Ashutosh Chauhan commented on HIVE-15982:
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* Executing select width_bucket(1, 5, 25, 4), width_bucket(10, 5, 25, 4),
width_bucket(20, 5, 25, 4), width_bucket(30, 5, 25, 4) from dual; on oracle
yields 0 2 4 5 which is different than your test case.
* You may use PrimitiveObjectInspectorUtils::getLong() instead of writing
custom function to extract long values.
> Support the width_bucket function
> ---------------------------------
>
> Key: HIVE-15982
> URL: https://issues.apache.org/jira/browse/HIVE-15982
> Project: Hive
> Issue Type: Sub-task
> Components: SQL
> Reporter: Carter Shanklin
> Assignee: Sahil Takiar
> Attachments: HIVE-15982.1.patch
>
>
> Support the width_bucket(wbo, wbb1, wbb2, wbc) which returns an integer
> between 0 and wbc+1 by mapping wbo into the ith equally sized bucket made by
> dividing wbb1 and wbb2 into equally sized regions. If wbo < wbb1, return 1,
> if wbo > wbb2 return wbc+1. Reference: SQL standard section 4.4.
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