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https://issues.apache.org/jira/browse/HIVE-554?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Paul Yang updated HIVE-554:
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Attachment: HIVE-554.2.patch
Sorry, I had misinterpreted what you mean by display string.
* Changed getDisplayString() methods to show 'array(...)' and 'map(...)'
* Reused return containers for array and map
> Add GenericUDF to create arrays, maps, and structs
> --------------------------------------------------
>
> Key: HIVE-554
> URL: https://issues.apache.org/jira/browse/HIVE-554
> Project: Hadoop Hive
> Issue Type: New Feature
> Reporter: Zheng Shao
> Assignee: Paul Yang
> Attachments: HIVE-554.1.patch, HIVE-554.2.patch
>
>
> Here is an example:
> {code}
> SELECT array(1,2,3)[3], map("a":1,"b":2,"c":3)["a"], struct(user_id:3,
> revenue: sum(rev))
> FROM table
> GROUP BY user_id;
> {code}
> This is relatively easy to do with the GenericUDF framework, and will greatly
> increase the flexibility of the language.
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