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https://issues.apache.org/jira/browse/PIG-2765?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13425531#comment-13425531
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Dmitriy V. Ryaboy commented on PIG-2765:
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Ok this looks good to commit. Please add release notes to this ticket (or to
documentation, via a different ticket) that explain what Rollup does, how to
use them, and what the syntax looks like.
> Implementing RollupDimensions UDF and adding ROLLUP clause in CUBE operator
> ---------------------------------------------------------------------------
>
> Key: PIG-2765
> URL: https://issues.apache.org/jira/browse/PIG-2765
> Project: Pig
> Issue Type: Sub-task
> Reporter: Prasanth J
> Assignee: Prasanth J
> Attachments: PIG-2765.1.patch, PIG-2765.2.git.patch, PIG-2765.2.patch
>
>
> Implement RollupDimensions UDF which performs aggregation from most detailed
> level of dimensions to the most general level (grand total) in hierarchical
> order. Provide support for ROLLUP clause in CUBE operator.
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