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https://issues.apache.org/jira/browse/PIG-158?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12599545#action_12599545
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Pi Song commented on PIG-158:
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Santhosh,
I don't understand what you meant by this:-
{noformat}
D = foreach C generate A.$0 * B.$1;
{noformat}
I guess "*" can be 2 things:-
1. Normal multiply. But in this case how can you know that A and B have to same
number of rows? so I think this case is undefined.
2. Cartesian product. In this case, no problem with the new meaning of
LOProject.
> 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,
> parser_changes_v3.patch, parser_changes_v4.patch, ParserErrors.txt,
> visitorWalker.patch
>
>
> Rework the logical plan in line with
> http://wiki.apache.org/pig/PigExecutionModel
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