Pig should allow self joins
---------------------------
Key: PIG-2631
URL: https://issues.apache.org/jira/browse/PIG-2631
Project: Pig
Issue Type: Improvement
Reporter: Jonathan Coveney
Fix For: 0.11
This doesn't have to even be optimized, and can still involve a double scan of
the data, but there is no reason the following should work:
{code}
a = load 'thing' as (x:int);
b = join a by x, (foreach a generate *) by x;
{code}
but this does not:
{code}
a = load 'thing' as (x:int);
b = join a by x, a by x;
{code}
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