Jonathan Coveney created PIG-3083:
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Summary: Introduce new syntax that let's you project just the
columns that come from a given :: prefix
Key: PIG-3083
URL: https://issues.apache.org/jira/browse/PIG-3083
Project: Pig
Issue Type: Bug
Reporter: Jonathan Coveney
Fix For: 0.12
This is basically a more refined approach than PIG-3078, but it is also more
work. That JIRA is more of a stopgap until we do something like this.
The idea would be to support something like the following:
a = load 'a' as (x,y,z);
b = load 'b' as (x,y,z);
c = join a by x, b by x;
d = foreach c generate a::*;
Obviously this is useful for any case where you have relations with columns
with various prefixes.
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