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https://issues.apache.org/jira/browse/PIG-158?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12593414#action_12593414
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Santhosh Srinivasan commented on PIG-158:
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I missed out on this question from 1.
[Pi] Another question is if we group by more than one column, will the "group"
column of the output tuples be tuples?
The current behaviour is the following:
a. If the group by column is one, then the schema of the column called "group"
will be the schema of the single column.
b. If the group by column is more than one then the schema of the column called
"group" will be a tuple that consists of the schemas of the constituent columns.
I have implemented b and I need to implement a.
> Rework logical plan
> -------------------
>
> Key: PIG-158
> URL: https://issues.apache.org/jira/browse/PIG-158
> Project: Pig
> Issue Type: Sub-task
> Components: impl
> Reporter: Alan Gates
> Assignee: Alan Gates
> Attachments: logical_operators.patch, logical_operators_rev_1.patch,
> logical_operators_rev_2.patch, logical_operators_rev_3.patch,
> parser_changes.patch, parser_changes_v1.patch, parser_changes_v2.patch,
> ParserErrors.txt, visitorWalker.patch
>
>
> Rework the logical plan in line with
> http://wiki.apache.org/pig/PigExecutionModel
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