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https://issues.apache.org/jira/browse/PIG-989?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alan Gates reassigned PIG-989:
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Assignee: Daniel Dai
> Allow type merge between numerical type and non-numerical type
> --------------------------------------------------------------
>
> Key: PIG-989
> URL: https://issues.apache.org/jira/browse/PIG-989
> Project: Pig
> Issue Type: Bug
> Components: impl
> Affects Versions: 0.5.0
> Reporter: Daniel Dai
> Assignee: Daniel Dai
> Attachments: PIG-989-1.patch, PIG-989-2.patch
>
>
> Currently, we do not allow type merge between numerical type and
> non-numerical type. And the error message is confusing.
> Eg, if you run:
> a = load '1.txt' as (a0:chararray, a1:chararray);
> b = load '2.txt' as (b0:long, b1:chararray);
> c = join a by a0, b by b0;
> dump c;
> And the error message is "ERROR 1051: Cannot cast to Unknown"
> We shall:
> 1. Allow the type merge between numerical type and non-numerical type
> 2. Or at least, provide more meaningful error message to the user
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