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https://issues.apache.org/jira/browse/HIVE-4262?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13621045#comment-13621045
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Phabricator commented on HIVE-4262:
-----------------------------------
ashutoshc has commented on the revision "HIVE-4262 [jira] fix last_value UDAF
behavior".
A minor comment. Also, you might need to rebase this on trunk.
INLINE COMMENTS
ql/src/java/org/apache/hadoop/hive/ql/parse/WindowingSpec.java:241 It will be
good to define as LAST_VALUE as public static final string in FunctionRegistry
just like for LEAD, LAG etc. and than refer that in Registry as well as here.
REVISION DETAIL
https://reviews.facebook.net/D9837
To: JIRA, ashutoshc, hbutani
> fix last_value UDAF behavior
> ----------------------------
>
> Key: HIVE-4262
> URL: https://issues.apache.org/jira/browse/HIVE-4262
> Project: Hive
> Issue Type: Bug
> Components: PTF-Windowing
> Reporter: Harish Butani
> Assignee: Harish Butani
> Attachments: HIVE-4262.D9837.1.patch
>
>
> When an Order Spec is present in an Over clause
> last_value should return the value from the last row that matches the current
> row's Sort Key.
> See egs here http://msdn.microsoft.com/en-us/library/hh231517.aspx
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