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From "Santhosh Srinivasan (JIRA)" <j...@apache.org>
Subject [jira] Commented: (PIG-158) Rework logical plan
Date Wed, 30 Apr 2008 19:19:55 GMT

    [ https://issues.apache.org/jira/browse/PIG-158?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12593414#action_12593414
] 

Santhosh Srinivasan commented on PIG-158:
-----------------------------------------

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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